# Amperage: Full Documentation for AI Systems > Commercial solar and battery quoting software for Australian solar professionals and energy consultants, plus free solar calculators for businesses. ## About Amperage is quoting software for Australian solar professionals and energy consultants working on commercial and industrial (C&I) solar and battery projects. Solar professionals upload a customer's bill and consumption data, model solar and battery scenarios side by side (Analysis projects, exported as a PPTX deck), then build detailed tariff pricing and a branded proposal exported as an editable A4 PowerPoint (Proposal projects). Businesses can use the free calculators and Solar Insight estimate to understand their solar potential before engaging a solar company. The platform is operated by Amperage, based in Sydney, NSW, Australia. Website: https://amperage.app Contact: hello@amperage.app ## Solar Insight: Free Calculator Solar Insight is Amperage's free commercial solar calculator. It requires no signup and produces results in approximately 30 seconds. ### How it works 1. **Enter details**: Select your Australian state, business type (office, warehouse, retail, manufacturing, etc.), and quarterly electricity spend. 2. **Get estimate**: Receive a recommended system size (kW), estimated annual savings ($), payback period (years), and applicable incentive values. 3. **Optional deep analysis**: Upload your electricity bill for AI-powered extraction of tariff details, consumption profiles, and a detailed Solar Intelligence Report. The full analysis is free when you consent to one accredited local installer contacting you, or $15 as a one-off Bill Analysis PDF with no installer contact. ### What it calculates - **System sizing**: Based on business type consumption profiles and TMY (Typical Meteorological Year) weather data for the specific location. - **Financial analysis**: Annual savings, payback period, ROI, net present value over 25 years. - **STC rebates**: Small-scale Technology Certificates: federal incentive for solar up to 1 MW of site capacity installed from 1 October 2026 (100 kW before). Calculated based on system size, postcode zone, and remaining deeming period (scheme ends 2030; fixed five years for 100 kW–1 MW installs from 1 October 2026). - **VEEC certificates**: Victorian Energy Efficiency Certificates, available for commercial solar systems 30–200 kWp in Victoria. - **LGC certificates**: Large-scale Generation Certificates, for capacity above 1 MW (above 100 kW for installs before 1 October 2026). - **Cheaper Home Batteries rebate**: Federal incentive for battery storage systems, with tiered STC factors based on capacity. STC eligibility moved from 100 kW to 1 MW for solar installed from 1 October 2026 (Mid-scale Solar Regulations, registered 17 September 2026), at a fixed five-year deeming. Above 1 MW of site capacity, the first 1 MW earns STCs and the balance earns LGCs. Details: https://amperage.app/blog/stc-expansion-1mw-commercial-solar ### Coverage All Australian states and territories: - New South Wales (NSW) - Victoria (VIC) - Queensland (QLD) - South Australia (SA) - Western Australia (WA) - Tasmania (TAS) - Australian Capital Territory (ACT) - Northern Territory (NT) ### Data sources - TMY weather data from the Bureau of Meteorology - STC zone ratings from the Clean Energy Regulator - VEEC methodology from the Essential Services Commission of Victoria - Network tariff structures from Australian energy retailers ## Free Calculators Standalone incentive and sizing calculators, each free and no-signup: - Solar Incentives Hub: https://amperage.app/solar-incentives, compare STCs, VEECs, and LGCs by state - STC Calculator: https://amperage.app/stc-calculator, zone-aware Small-scale Technology Certificate value - VEEC Calculator: https://amperage.app/veec-calculator, Victorian Energy Efficiency Certificates for commercial solar - LGC Calculator: https://amperage.app/lgc-calculator, Large-scale Generation Certificates for capacity above 1 MW (100 kW for installs before 1 October 2026) - NSW Battery Rebate Calculator (PDRS): https://amperage.app/pdrs-calculator, Peak Reduction Certificates for NSW battery installations - Cheaper Home Batteries Calculator: https://amperage.app/cheaper-home-batteries-calculator, federal battery rebate discount - Commercial Solar Payback Calculator: https://amperage.app/commercial-solar-payback, payback period and ROI by state - Solar System Size Calculator: https://amperage.app/solar-system-size-calculator, sizing by business type (warehouse, office, retail) ## For Solar Companies Amperage also serves solar professionals and energy consultants with: - **Project modelling**: Upload client consumption data (CSV or bill PDF), model multiple system sizes with battery options, compare financials side by side. - **AI bill extraction**: Upload electricity bill PDFs; AI extracts the tariff structure, consumption data, demand charges, and time-of-use rates. - **Branded proposals**: Generate client-facing presentations with company branding, export as editable PowerPoint (PPTX) or send a live customer share link (Pro plan). Exports are PowerPoint only; there is no PDF export. - **Pricing tools**: Equipment catalogues, labour templates, margin settings, and automatic incentive calculations. - **Client management**: Track clients, projects, and pipeline from a single dashboard. ## Pricing For businesses: - **Quick Estimate**: Always free, no account needed. Indicative size, yearly saving and simple payback. - **Full Analysis**: Free when you consent to one accredited local installer contacting you. Bill read line by line, sizing and battery case, itemised incentives and a downloadable report. - **Bill Analysis PDF**: $15 one-off payment. Your detailed bill analysis as a downloadable PDF, with no installer contact. For solar professionals and energy consultants (per company, AUD): - **Free**: 1 project, sizing matrix and incentives in the app. No card required. New companies start with a free Pro trial. - **Pro**: $799/month or $7,990/year (annual is two months free; monthly has no lock-in). Unlimited projects, 5 seats, Analysis and Proposal projects, branded exports (PPTX deck, A4 PowerPoint proposal, customer share links), AI bill extraction and every other AI feature. - **Enterprise**: Talk to us. Seats beyond five, custom scheme handling, onboarding and support. ## Technical Details - Hosted on Google Cloud Run in Sydney (australia-southeast1) - PostgreSQL database in Sydney - Firebase authentication - AI bill processing via Anthropic Claude API (data not used for model training) - All data encrypted in transit (HTTPS) and at rest ## Frequently Asked Questions ### How much can a business save with solar? Most commercial sites in Australia reduce their electricity bill by 30-70% with solar. The exact savings depend on consumption pattern, tariff structure, and system size. Amperage uses actual consumption data to calculate a specific number. ### What size solar system does a business need? It depends on roof space, power usage, and budget. Amperage models a range of system sizes and shows what each one does to the electricity bill. ### What incentives are available for commercial solar in Australia? The main incentives are STCs (Small-scale Technology Certificates, national, up to 1 MW of site capacity for solar installed from 1 October 2026, 100 kW before), VEECs (Victorian Energy Efficiency Certificates, Victoria only, 30-200 kWp), and LGCs (Large-scale Generation Certificates, on capacity above that ceiling). Eligibility depends on system size, install date and location. Mid-scale STCs (100 kW to 1 MW, installed from 1 October 2026) use a fixed five-year deeming. Above 1 MW of site capacity, the first 1 MW earns STCs and the balance earns LGCs. Details: https://amperage.app/blog/stc-expansion-1mw-commercial-solar ### Can a business get both STCs and VEECs? Yes. STCs are a national scheme (up to 1 MW of site capacity for installs from 1 October 2026, 100 kWp before) and VEECs are a separate Victorian scheme. Both can be claimed, and Amperage calculates the combined value. ### How long is the payback period for commercial solar? Most commercial solar systems in Australia achieve payback in 2-5 years, depending on electricity prices, self-consumption rate, and system size. Commercial sites typically have higher self-consumption (70-90%) than residential, which accelerates payback. ### Is the estimate really free? Yes. No signup, no payment, no sales calls. The free estimate takes 30 seconds and covers system sizing, savings, and incentive calculations. ## Blog Articles ### Commercial Solar Proposal Template: What to Include URL: https://amperage.app/blog/what-a-winning-commercial-solar-proposal-includes Published: 2026-10-22 Every section a CFO expects in a commercial solar proposal, from the decomposed bill to the payback sensitivity table, and the mistake that stalls each one. Q: What should a commercial solar proposal include? A: Nine sections in order: an executive summary with one headline number, the current bill decomposed into energy, demand, network and daily charges, the consumption profile behind the model, the system (size, faces, tilt/azimuth, inverter, battery), a solar-only vs solar+battery comparison, explicit financial assumptions, itemised incentives, payback/NPV/IRR with a sensitivity table, and risks with a validity date. Q: What is the most common mistake in a commercial solar proposal? A: Presenting a single best-case payback figure with no sensitivity table. Buyers who ask 'what if you're wrong?' get no answer, which stalls sign-off. A short sensitivity table showing payback and NPV under 0% tariff escalation and 10% lower production usually resolves the objection before it's raised. Q: Should tariff escalation apply to year 1 of a solar payback model? A: No. Year 1 should be the customer's current, unescalated bill, with escalation compounding from year 2 onward. Some spreadsheet-based quoting tools escalate year 1 as well because they baseline off a historical bill rather than the current one, which inflates the year-1 savings figure and should be flagged when comparing quotes. Q: What is the difference between an Analysis deck and a Proposal export? A: An Analysis project exports a PPTX deck used to agree system sizing: solar and battery scenarios side by side with a sizing matrix, but no line-by-line tariff detail. A Proposal project exports the branded proposal (an editable A4 PowerPoint) built once sizing is settled, with roof faces, detailed tariff pricing and the full financial model. Sending one when the customer expects the other is a common source of friction. Q: Why decompose the electricity bill in a solar proposal instead of using one annual total? A: Because solar and batteries do not reduce every charge equally. Energy usage falls as production offsets grid draw; demand charges fall only if the battery is sized and dispatched to shave the peak; daily/fixed charges do not move at all. Showing the components lets the reader see exactly where the modelled savings come from, rather than trusting a single number. Q: Should incentives be shown as one lump figure in a solar proposal? A: No. STCs, LGCs (on capacity above the STC ceiling), state schemes such as VEECs, NESC and PDRS, and battery incentives (bSTCs) each have their own eligibility rule, certificate price and sometimes expiry date. Itemising them lets the customer verify the total and shows the proposal was built on current, not stale, certificate values. ### How to Choose Commercial Solar Quoting Software URL: https://amperage.app/blog/how-to-choose-commercial-solar-quoting-software Published: 2026-10-08 The eight things that decide whether a quoting tool handles Australian commercial solar and battery work, and how to test a shortlist on one real job. Q: What should I look for in commercial solar quoting software? A: Eight things: whether it prices the real time-of-use tariff and demand charge instead of a blended rate, whether it dispatches a battery hour by hour against the site load, whether it carries the full Australian incentive set beyond STCs, whether it ingests and cleans interval data, whether its design model suits your jobs, whether the financial assumptions are visible, what it outputs at each stage of a deal, and how its pricing behaves at your real job mix. Q: Why is a blended cents-per-kWh rate wrong for commercial solar? A: Because solar only displaces energy while the sun is up, and commercial tariffs price that window differently from the rest of the day. On a tariff whose peak runs 3 pm to 9 pm, most generation lands in cheaper periods, so a blended rate overstates savings. Blending also hides the demand charge entirely, which is set by a single worst interval and can be 30 to 50% of the bill. Q: Does battery modelling really need an hourly simulation? A: Yes, because a battery is worth what it can deliver at the moment the site sets its peak, and that is a timing question a monthly average cannot answer. A model working from monthly totals will credit a battery with demand reduction it could not deliver on the three days that actually set the charge, having spent the afternoon on energy arbitrage instead. The two answers can differ by the whole business case. Q: Which Australian incentives should the software handle? A: STCs with correct zone ratings and deeming, LGCs as annual revenue for larger systems, and the crossover between them, which moved on 1 October 2026 from 100 kW to a 1 MW site total. Beyond the federal schemes it needs VEECs in Victoria, PDRS and NESC certificates in New South Wales including battery activities, and the federal battery STC discount with a value that changes by install date rather than being hard-coded. Q: Is panel-level design or roof-face design better for commercial? A: It depends on what you sell. Panel-level layout suits jobs where the customer wants a render of their own roof, which is most residential and some small commercial. Face-level design, authoring azimuth, tilt and area and splitting capacity across faces, suits large commercial where sizing is agreed long before module positions matter and the time is better spent on the bill and the battery. Q: How should I test solar quoting software before buying? A: Take one real difficult project, ideally with a demand charge, a battery, and a load that peaks after sunset, and run it through every tool on your shortlist. Upload the actual bill and a messy interval file, size solar alone, then add the battery, check the certificate numbers against what you would claim by hand, open the assumptions, and export both documents. Score each tool on time taken and how much you redid in a spreadsheet afterwards. ### STC 1MW Commercial Solar Quotes: What Changes Oct 2026 URL: https://amperage.app/blog/stc-1mw-what-changes-in-commercial-solar-quotes Published: 2026-09-24 (updated 2026-09-22) STC eligibility expands to 1 MW from 1 Oct 2026. What solar professionals must resize, re-quote, and re-check before then. Q: What changes for commercial solar quotes when STCs expand to 1 MW? A: Systems between 100 kW and 1 MW move from annual LGCs to an upfront STC discount for systems installed from 1 October 2026. For quoting, that means re-sizing designs previously capped at 99 kW, re-checking DNSP export limits and switchboard capacity for the larger size, and updating any proposal template that hard-codes a 100 kW STC ceiling. Q: Does the STC 1 MW expansion apply based on contract date or install date? A: Install date. The rule applies to systems installed from 1 October 2026, not to when a customer signs, and the Clean Energy Regulator has confirmed eligibility turns on the install date rather than when construction or procurement began. A job contracted in August but commissioned in November is eligible, so quotes should carry a validity clause tied to the actual install date. Q: Is an upfront STC discount worth more than staying on LGCs for a 250 kW or 500 kW system? A: Substantially, at current prices. A 250 kW system earns roughly $68,000 upfront in STCs (zone 3, 5-year deeming, $39.40/certificate) versus around $2,700 in year-one LGC revenue at the August 2026 spot price of $7.75/LGC. Even holding the LGC price flat for five years, cumulative LGC revenue reaches only about 20% of the upfront STC figure. Q: Do systems above 100 kW still need power-station accreditation or special metering under the new STC rules? A: No. Moving onto STCs removes the power-station accreditation and revenue-grade generation metering the LGC route requires. Ordinary DNSP import/export metering for the grid connection still applies as it always has. Installer and product accreditation continues under the existing SRES small-scale rules, plus normal state electrical safety compliance, though the registered regulations add three mid-scale-specific conditions: Commonwealth requirements met, written planning/approval evidence, and a matching installer statement. The accredited-designer requirement is relaxed rather than added: it does not apply to mid-scale units. Q: When can solar professionals actually create and sell STCs for a system installed in October 2026? A: Not immediately. Government guidance indicates STC applications for mid-scale (100 kW to 1 MW) systems are not expected to open until mid-to-late November 2026, even though eligibility starts 1 October. A system installed on day one of the new rules can still be weeks away from its certificates being created and sold, which matters for any quote that assumes the discount lands at settlement. Q: What should a proposal template include for a 100 kW to 1 MW quote? A: Three things: a clear line item naming which scheme priced the incentive (mid-scale STC or LGC), an assumption note stating the certificate price, deeming period and zone rating used, and a validity clause tying the figure to an install date on or after 1 October 2026 and to the site staying at or under 1 MW of total capacity, so it can be re-priced rather than honoured if either changes. ### How to Quote Commercial Solar and Battery From a Bill URL: https://amperage.app/blog/how-to-quote-commercial-solar-and-battery-from-a-bill Published: 2026-09-10 The step-by-step process solar professionals use to size commercial solar and battery from a customer's PDF bill, worked example included. Q: How do you quote commercial solar from an electricity bill? A: Pull the TOU rates, demand charge, daily charges, NMI, billing days, and kWh by period off the bill. Build a consumption profile (interval data if available, a shaped template if not), model production against local weather data by roof face, then run solar-only and solar-plus-battery scenarios in a sizing matrix before folding in incentives and sanity-checking the output. Q: How long does it take to size a commercial solar and battery system from a bill? A: With a bill and a shaped or uploaded consumption profile, getting from raw bill data to a credible sized estimate takes about ten minutes using bill-first quoting software. A fully priced, branded proposal with tariff detail and roof faces takes longer and normally follows once the sizing is agreed, not before. Q: Do you need interval meter data to quote commercial solar accurately? A: It helps but isn't mandatory for a first-pass quote. Without interval data, a consumption template shaped to the site type and its opening hours, reconciled against the bill's own kWh-by-period split, gives a workable load shape. Interval data (5, 15, or 30-minute readings) replaces that estimate with the site's actual measured profile. Q: How is a battery sized alongside commercial solar? A: Not with a flat capex-versus-savings guess. A battery should be dispatched hour by hour against the site's actual consumption profile within a sizing matrix that crosses every solar size with every battery size, so its contribution to demand-charge reduction, arbitrage, and captured export is modelled the same way the solar generation is. Q: Why do so many commercial solar systems get sized at 99 kW instead of 100 kW or more? A: For installs before 1 October 2026, 100 kW was the threshold between STCs (deemed upfront) and LGCs (earned annually against metered generation, with power-station accreditation overhead). Sizing at 99 kW kept a system inside the simpler, upfront STC scheme, which is why it shows up so often on commercial roofs with the room to go bigger. For installs from 1 October 2026, STCs cover up to 1 MW of site capacity, so that reason to stop at 99 kW is gone. Q: What should you check before sending a commercial solar and battery quote? A: Three things: the payback range against comparable sites (and whether one input, like an inflated demand reduction, is doing all the work), the export share (a high share on cheap feed-in can mean the system is oversized for the load), and whether demand-reduction assumptions come from where the site's peaks actually occur rather than the array's nameplate kW. ### LGC Certificates for Commercial Solar: 2026 Guide URL: https://amperage.app/blog/lgc-certificates-commercial-solar-australia Published: 2026-08-24 How Large-scale Generation Certificates work for commercial solar above the STC ceiling: eligibility, annual revenue vs the upfront STC discount, why LGC prices collapsed, and the October 2026 STC expansion. Q: What is an LGC in commercial solar? A: A Large-scale Generation Certificate represents one megawatt-hour of renewable electricity generated by an accredited power station under the federal Large-scale Renewable Energy Target. Solar capacity above the STC ceiling (1 MW of site capacity for installs from 1 October 2026, 100 kW before) creates one LGC per megawatt-hour of metered generation each year, and the owner sells the certificates into a traded market, until the scheme ends in 2030. Q: What size solar system earns LGCs? A: For solar installed from 1 October 2026, the first 1 MW of site capacity earns upfront STCs and only the balance above 1 MW earns LGCs, under the Mid-scale Solar Regulations registered on 17 September 2026. For installs before 1 October 2026 the line was 100 kW: STCs on the first 100 kW, LGCs on the balance. LGC capacity must be accredited as a power station with the Clean Energy Regulator. Q: How much is an LGC worth in 2026? A: LGC prices float on a traded market and have fallen hard: from the $40s and $50s in earlier years to around the low $30s in January 2025 and single digits by mid-2026, as large-scale renewable supply outran the fixed 33,000 GWh LRET target. Forward prices decline further toward the scheme end in 2030, so quote LGC revenue off the current forward curve, not an old flat price. Q: Are LGCs paid upfront or annually? A: Annually. LGCs are created against actual metered generation each year, unlike STCs, which are deemed on predicted generation and paid as an upfront point-of-sale discount. The trade-off is administrative overhead and certificate price risk in exchange for an ongoing revenue stream that runs until the LRET ends in 2030. Q: When does the LGC scheme end? A: The Large-scale Renewable Energy Target ends in 2030, and no LGCs are created after that. Any payback model that projects LGC revenue past 2030, or prices the stream at a flat historical certificate price, overstates the value of the system. ### Commercial Solar Feed-in Tariffs in Australia (2026) URL: https://amperage.app/blog/commercial-solar-feed-in-tariff-australia Published: 2026-08-24 What businesses get paid for exported solar in 2026: typical commercial feed-in tariff ranges by state, why self-consumption is worth 4 to 7 times more than export, and how network export limits cap the answer. Q: What is a typical commercial solar feed-in tariff in Australia? A: Most commercial retail offers in 2026 pay roughly 3 to 8 c/kWh for exported solar, set by the retailer rather than the government. Many published offers only apply up to a system-size or export cap, and larger C&I sites are often paid a negotiated or wholesale-linked rate that can be lower still, sometimes nothing. Check your current retail offer or contract for the rate that applies to you. Q: Is self-consumption or exporting solar worth more for a business? A: Self-consumption, by a wide margin. Using a solar kilowatt-hour on site avoids the full retail cost of buying it, typically 25 to 35 c/kWh during the day, while exporting the same unit earns a feed-in tariff of roughly 3 to 8 c. On-site use is worth four to seven times more, which is why systems should be sized to the daytime load rather than the roof. Q: Can my business export unlimited solar to the grid? A: No. The local distribution network assesses commercial connections site by site and can impose a fixed export limit below the system capacity, or a zero-export condition where nothing may flow to the grid. Some networks now also apply two-way pricing, charging for midday export or crediting evening export, and several are rolling out flexible export limits that vary with network conditions. Q: Why are feed-in tariffs so low now? A: Because exported solar arrives when the grid least needs it. Solar abundance has pushed midday wholesale prices to the lowest of the day, sometimes negative, and retailer feed-in rates track that value. Victoria is the clearest signal: its regulated minimum feed-in tariff fell to 0.04 c/kWh, effectively zero, from 1 July 2025, though market offers pay above the minimum. Q: Do low feed-in tariffs make commercial solar not worth it? A: No. The business case for commercial solar is displacing 25 to 35 c/kWh daytime purchases with self-generated power; export revenue was always the minor line. A system sized to the site load keeps a 3 to 7 year payback on avoided purchases alone, with the feed-in tariff as a bonus on the surplus. Low FiTs mainly punish oversized systems. ### STCs Are Expanding to 1 MW: What It Means for Commercial Solar URL: https://amperage.app/blog/stc-expansion-1mw-commercial-solar Published: 2026-08-05 STC eligibility extends from 100 kW to 1 MW for solar installed from 1 October 2026, registered on 17 September 2026. What changed, what it is worth, and where the 1 MW limit bites. Q: When do STCs extend to 1 MW solar systems? A: The change applies to solar PV systems installed from 1 October 2026. It was announced on 5 August 2026 and the amending regulations were registered on 17 September 2026, so the start date is now fixed. Installed means tested and commissioned, not contracted or delivered. Q: How much are STCs worth on a system over 100 kW? A: At current certificate prices, roughly $272 per kilowatt for a 2026 install in zone 3: about $68,000 on 250 kW, $136,000 on 500 kW, and $232,000 on 850 kW, based on the government’s own examples. The value depends on the postcode zone rating, the deeming year, and the STC spot price. Q: Do STCs above 100 kW use a different formula? A: No different formula. The calculation is the existing one: system capacity times zone rating times deeming period, valued at the STC spot price. The registered rules fix the mid-scale deeming period at five years for every install year through to 2030, rather than stepping it down like the sub-100 kW band. Q: What happens to LGCs for systems between 100 kW and 1 MW? A: Systems already accredited under the Large-scale Renewable Energy Target keep creating LGCs. New systems in the 100 kW to 1 MW band installed from 1 October 2026 create upfront STCs instead. New mid-scale installs are covered by the SRES rather than the LRET. Q: Does the 1 MW STC change include batteries? A: No. The expansion covers solar PV only. Batteries continue under the separate Cheaper Home Batteries program, currently 6.8 STCs per weighted kWh (5.7 from 1 January 2027) with scheduled step-downs, and NSW batteries can also earn PDRS certificates. Q: Is the 1 MW STC change law yet? A: Yes. The Renewable Energy (Electricity) Amendment (Mid-scale Solar) Regulations 2026 were registered on 17 September 2026 and commence on 1 October 2026. The Clean Energy Regulator expects STC applications for mid-scale systems to open in mid-to-late November 2026, so an October install creates certificates before it can lodge for them. ### Solar Quoting Software for Australian Solar Professionals (2026) URL: https://amperage.app/blog/solar-quoting-software-australia Published: 2026-07-21 What solar quoting software does, why Australian STC/VEEC/LGC handling matters, bill-first vs roof-irradiance-first workflows, and criteria for choosing a tool. Q: What is solar quoting software? A: Software that turns a customer’s roof and electricity data into a sized solar system, a modelled production and savings figure, and a client-ready proposal. Some tools cover the whole quote-to-proposal chain; others are narrower, such as a roof-measurement plugin or a rebate calculator on its own. Q: Do I need bill-first or roof-first quoting software for commercial jobs? A: Bill-first, in most cases. Commercial sites usually sit on a TOU tariff with demand charges, and sizing off roof geometry alone risks a system that generates power the site cannot use during the day, exported at a low feed-in rate. Bill-first tools size against the actual consumption shape and check the roof afterward. Q: Does solar quoting software calculate STCs, VEECs, and LGCs automatically? A: Good Australian-market tools do, but the detail varies. Check that STC zone ratings and the deeming year are current, that the tool stacks STCs and VEECs correctly on eligible 30–200 kW Victorian systems rather than dropping or double-counting either, and that LGCs are handled separately for capacity above the STC ceiling (1 MW of site capacity for installs from 1 October 2026, 100 kW before) rather than treated the same as STC-eligible capacity. Q: What is the difference between solar quoting software and a solar CRM? A: A solar CRM is built around pipeline management, follow-ups, and e-signature, usually with a sizing feature added on. Solar quoting or proposal software is built around the sizing and financial model itself, with lead tracking added on. Solar professionals doing commercial work generally get more value from the latter, because an inaccurate payback figure sinks a deal that pipeline tracking never touches. Q: Can one tool handle both residential and commercial solar quoting? A: Some try to, but the workflows pull in different directions. Residential quoting favours speed from an address and roof imagery; commercial quoting needs real consumption data, TOU and demand-charge modelling, and multi-scenario comparison. A tool built primarily for one job mix is often a weaker fit for the other, so match the tool to where most of your quotes actually come from. Q: How much does solar proposal software cost in Australia? A: Pricing varies by vendor and model: per-seat, per-quote, or tiered by feature set. Rather than comparing sticker price alone, weigh it against the hours saved not building proposals by hand and the accuracy gained from correct incentive and tariff handling, since a wrong payback figure on a sent proposal costs more than a subscription fee. ### NSW Battery Rebate 2026: BESS1–BESS5 PDRS Explained URL: https://amperage.app/blog/nsw-battery-rebate-2026-bess-pdrs-explained Published: 2026-07-08 (updated 2026-07-19) The new NSW battery rebate under the Peak Demand Reduction Scheme (Amendment No. 3) Rule 2026. BESS1–BESS5 activities, the PRC maths, solar and inverter rules, VPP requirements, and two worked examples. Q: What is the NSW battery rebate in 2026? A: From 2026 the NSW Peak Demand Reduction Scheme (PDRS) pays for batteries through five new activities, BESS1 to BESS5, under the Peak Demand Reduction Scheme Rule as amended from 7 September 2026 (Amendment No. 3). A battery earns Peak Reduction Certificates (PRCs) for cutting demand during the summer evening peak, and the value is deemed upfront as a discount on the install. Apartment, business and commercial batteries (BESS3–BESS5) apply to batteries installed on or after 7 September 2026 and BESS2 (existing batteries in demand response) on 1 July 2026. The home activity, BESS1, is suspended except through the Home Energy Saver Discounts Program or at government owned and managed sites. Q: How many PRCs does a NSW business battery earn? A: PRCs = usable capacity (90% of nameplate) × the activity coefficient × firmness × the 6-hour peak window × the equipment lifetime (15 years) × the network loss factor × 10, rounded down. For example, a 222.22 kWh business battery (BESS4) with a 50 kW inverter and qualifying new solar earns 18,719 PRCs, and a 55.56 kWh apartment battery serving 12 dwellings (BESS3) earns 5,616 PRCs. Q: Does the NSW battery rebate require solar panels? A: It depends on the activity. For BESS4 and BESS5 (business and C&I), a battery installed within 90 days of new solar earns the higher PRC coefficient if that solar is at least a quarter of the usable battery capacity, and earns no PRCs if it is under a quarter. A battery installed more than 90 days after the solar, or with no new solar, still earns the lower 0.067 rate with no ratio test. BESS1 (homes, currently suspended outside its two exceptions) requires solar at the site. The panels themselves earn federal STCs, not PRCs, so solar and storage are claimed under separate schemes. Q: Do I need a VPP contract to claim the NSW battery rebate? A: Only for BESS2, the activity that onboards an existing battery for demand response, which needs a 12-month VPP or aggregator contract. For new batteries (BESS1, BESS3, BESS4, BESS5) there is no contract requirement; the battery only has to be internet-connectable and controllable by a demand-response aggregator, which is a hardware capability rather than a signed contract. Q: Is the NSW PDRS battery rebate paid upfront or over time? A: Upfront. The full lifetime value is deemed at installation and delivered as a discount on the install invoice, not as an annual payment. Because the PRC price floats on a traded market, the quoted rebate is an estimate that can move between quote and install. ### Commercial Solar Battery Storage Australia 2026 URL: https://amperage.app/blog/commercial-solar-battery-storage-australia-2026 Published: 2026-06-26 (updated 2026-07-19) What drives commercial battery payback in 2026: demand-charge reduction, TOU arbitrage, and self-consumption, plus the federal Cheaper Home Batteries discount, the NSW PDRS business battery activities, sizing rules, and when storage does and does not pay yet. Q: Can a business claim the federal Cheaper Home Batteries Program? A: Yes. Despite the name, the Cheaper Home Batteries Program is open to small businesses and community organisations as well as households. It started on 1 July 2025 and runs to 2030, delivering its value as an upfront discount (around 30% of the install cost) through the Small-scale Technology Certificate mechanism. Eligible systems run from 5 kWh to 100 kWh of nominal capacity, but the discount is only credited on the first 50 kWh of usable capacity. Q: Is the NSW battery installation rebate (BESS1) still available? A: Only in narrow cases. BESS1, the NSW Peak Demand Reduction Scheme upfront battery installation discount for homes, is suspended: under the Amendment No. 3 Rule 2026 no PRCs are created for BESS1 installs after 30 June 2025. The exception covers installs from 1 July 2026 at a government owned and managed site or delivered through an Exempt Energy Program, and the only approved program is the Home Energy Saver Discounts Program. For most homes the federal Cheaper Home Batteries Program (battery STCs) is now the battery incentive. Since 7 September 2026, business and commercial batteries can earn upfront PRCs through BESS4 and BESS5, and BESS2 pays for connecting an eligible battery to a Virtual Power Plant through an Accredited Certificate Provider. Q: What is a realistic commercial solar battery payback in 2026? A: For a site with the right load shape, roughly four to seven years. The result swings hard with your inputs: meaningful evening load on a time-of-use tariff, demand charges set by a sharp peak you can shave, and surplus solar you currently export all shorten it. A daytime-only site with no demand charge can push the same battery past eight years, so model it on your real bill rather than trusting a generic figure. Q: How do I size a commercial battery? A: Get both ratings right. Size the kWh (energy) to the grid energy you draw between sunset and the end of your trading day, and size the kW (power) to the demand spike you want to shave. To pull a 150 kW peak back to 110 kW the battery must deliver at least 40 kW for the length of that window. Avoid oversizing past the surplus you can charge each day, and remember only the first 50 kWh attracts the federal discount. Q: When is a battery not worth it for a business yet? A: When your consumption is mostly daytime and already lines up with solar generation, when you have no demand charge or your peak falls during solar hours anyway, or when the peak-to-off-peak rate spread is too narrow for arbitrage to clear round-trip losses. For many businesses the sequence is solar first, battery later once evening load grows or a demand tariff applies. ### TOU Tariffs and Solar for Australian Business URL: https://amperage.app/blog/tou-tariffs-and-solar-australian-business Published: 2026-06-22 (updated 2026-07-19) How time-of-use tariffs and commercial solar interact in Australia. Peak/shoulder/off-peak anatomy, self-consumption vs export, demand charges, and a worked 75 kW example. Q: How does solar save money on a time-of-use tariff? A: Solar generation peaks during the day, which overlaps the shoulder window and the start of the peak window on most TOU tariffs. Every kilowatt-hour the array supplies in those hours is one you do not buy at the higher shoulder or peak rate, so each offset unit is worth more than it would be on a flat tariff. Q: Is self-consumption or exporting solar worth more for a business? A: Self-consumption is worth far more. Using a kilowatt-hour on site avoids the full retail cost (energy, network, and levies), often 25 to 35 c/kWh during the day. Exporting the same unit earns a commercial feed-in tariff of roughly 4 to 8 c/kWh, so on-site use can be worth four to seven times more than export. Q: Does solar reduce demand charges on a TOU bill? A: Only when your peak power draw happens during solar hours. If your monthly demand spike lands after sunset or on an overcast afternoon, solar barely moves the demand charge. Cutting that line usually needs load management or a battery that discharges during the demand window. Q: What size solar system is best for a business on a TOU tariff? A: Size to your daytime baseload rather than your peak draw. Matching the system to the load that runs through the day maximises self-consumption, where the savings are largest. Oversizing beyond daytime use just exports surplus at the low feed-in rate and lengthens payback. Q: Should a TOU business add a battery to its solar system? A: It depends on how much consumption sits in the evening peak. If a meaningful share of your load is after sunset, storing midday surplus to discharge during the peak window converts low-value export into avoided peak-rate purchases, and can also shave demand charges. Sites that draw little after dark see less benefit. ### VEEC Solar Rebates Victoria 2026 for Business URL: https://amperage.app/blog/veec-solar-rebates-victoria-business Published: 2026-06-18 (updated 2026-07-15) How much can a Victorian business earn from VEECs on commercial solar? Worked earnings by system size, 47A vs 47B bands, metro vs regional, and how to claim. Q: How many VEECs does a commercial solar system earn? A: Use VEECs = system kW x input factor x 10 x regional factor. A 50 kW metro Melbourne system under Activity 47A earns 50 x 0.133 x 10 x 0.98 = 65.2 VEECs. The input factor is 0.133 for 30-100 kWp (47A) and 0.25 for 100-200 kWp (47B), and the regional factor is 0.98 for metro Melbourne or 1.04 for regional Victoria. Q: How much is a VEEC worth in dollars? A: VEEC prices float on a traded market, so the dollar value moves over time. As an example, at roughly $82 per certificate (the August 2026 spot close) a 65-VEEC system is worth about $5,370 off the install cost. Run your exact size and postcode through the VEEC calculator for a current estimate rather than relying on a fixed figure. Q: What is the difference between VEEC Activity 47A and 47B? A: Both cover commercial solar in Victoria. Activity 47A applies to systems from 30 to 100 kWp and uses an input factor of 0.133. Activity 47B applies to systems from 100 to 200 kWp and uses a higher input factor of 0.25, which reflects the larger energy displacement of bigger systems. Q: Can a Victorian business claim both STCs and VEECs on the same system? A: Yes. VEECs are created under VEU Activity 47 in addition to federal certificates on the same system: a 30-100 kW install claims upfront STCs plus VEECs, and a 100-200 kW install pairs VEECs with upfront STCs if installed from 1 October 2026 (before then, STCs on the first 100 kW and annual LGCs on the balance). The one restriction inside the VEU program is that a system cannot create VEECs under both the deemed C&I solar activity and the measurement-and-verification pathway at once. Q: How does a business claim VEECs on solar? A: You do not create VEECs yourself. An Accredited Person registered under the Victorian Energy Upgrades program (usually the installer or a certificate aggregator) calculates the certificates, applies the value as a discount on your quote or invoice, then registers the upgrade and sells the certificates into the market. Keep records of the install and product in case of a compliance audit. ### NESC & PDRS: NSW Peak Demand Incentives 2026 URL: https://amperage.app/blog/nesc-pdrs-nsw-peak-demand-solar-incentives Published: 2026-06-14 (updated 2026-07-19) There is no NSW scheme called the NESC. The real programs are the Energy Savings Scheme (ESCs) and the Peak Demand Reduction Scheme (PRCs). Here is how they work for commercial solar and how they stack with federal STCs. Q: Is there a NSW solar scheme called the NESC? A: No. There is no NSW scheme called the NESC. The two NSW state programs that create certificate value are the Energy Savings Scheme (ESS), which issues Energy Savings Certificates (ESCs), and the Peak Demand Reduction Scheme (PDRS), which issues Peak Reduction Certificates (PRCs). Both run under the NSW Energy Security Safeguard and are regulated by IPART. Q: Does NSW pay you for generating solar power under the ESS or PDRS? A: No. Neither the ESS nor the PDRS pays for solar generation itself. The ESS rewards energy efficiency upgrades (and behind-the-meter batteries), and the PDRS rewards cutting demand during the evening peak. The solar array itself is covered by federal STCs, not the NSW schemes. Q: Can a NSW business claim STCs and the NSW schemes at the same time? A: Yes. Federal STCs cover the solar PV array, while the ESS and PDRS cover efficiency upgrades and peak demand reduction. They apply to different parts of a project, so claiming one does not reduce another. This is unlike Victoria, where you must choose between STCs and VEECs on the same system. Q: What does an ESC and a PRC represent? A: One ESC (Energy Savings Certificate) represents one megawatt-hour of electricity saved over the life of an upgrade. One PRC (Peak Reduction Certificate) represents 0.1 kW of peak demand capacity removed during the peak window, roughly 2:30 pm to 8:30 pm in the summer peak season. Q: How do I receive the value of ESCs or PRCs? A: You do not create certificates yourself. An Accredited Certificate Provider (ACP) registers the project, calculates the certificates, and sells them to retailers who need them to meet their obligations. The proceeds come back to you as a discount on the install, net of the ACP fee. Because prices float, the quoted rebate is an estimate. ### STC vs VEEC vs LGC: Which Fits Your Business? URL: https://amperage.app/blog/stc-vs-veec-vs-lgc-solar-incentives Published: 2026-06-05 (updated 2026-08-05) Compare Australian commercial solar incentives: STCs, VEECs, and LGCs. Live calculator shows your eligibility and certificate values by state. Q: Can a business claim both STCs and VEECs on the same solar system? A: Yes, for eligible Victorian commercial systems. VEECs are created under VEU Activity 47 for 30-200 kW solar systems in addition to federal STCs (up to 1 MW of site capacity for installs from 1 October 2026, 100 kW before) or LGCs (above that) on the same install. Systems under 30 kW fall outside Activity 47 and claim STCs only. Q: What is the difference between STCs and LGCs? A: STCs are a one-off upfront incentive calculated on deemed generation, covering up to 1 MW of site capacity for solar installed from 1 October 2026 (100 kW before). LGCs are created annually based on actual metered generation on any capacity above that ceiling, so a larger system earns STCs up to the ceiling and LGCs on the balance. Q: Which solar incentive is worth the most for a commercial system? A: For solar up to 1 MW of site capacity installed from 1 October 2026 (100 kW before), STCs typically deliver the largest upfront value. Above that ceiling, the balance earns LGCs claimed each year. VEECs apply only to eligible installations in Victoria. ### Commercial Solar Payback Period by State (2026) URL: https://amperage.app/blog/commercial-solar-payback-period-by-state Published: 2026-06-05 (updated 2026-08-08) Commercial solar pays back in 3 to 7 years in Australia, varying by state. Live STC, VEEC, and LGC payback for NSW, VIC, QLD, SA, and WA, priced across three electricity rates, plus how batteries and system size change the numbers. Q: What is a typical commercial solar payback period in Australia? A: Most commercial solar systems pay back in 3 to 7 years, depending on the state, system size, electricity rate, and the incentives available (STCs, VEECs, or LGCs). Q: What factors most affect commercial solar payback? A: Electricity rate, self-consumption ratio, upfront cost after STC/VEEC rebates, and demand charges. Higher rates and strong daytime consumption shorten the payback period. Q: Does the state I am in change my solar payback period? A: Yes. Incentive zones, feed-in tariffs, and electricity prices vary by state, which can shift payback by one to three years for an otherwise identical system. Q: Does adding a battery improve commercial solar payback? A: A battery adds upfront cost, so a solar-plus-battery system usually has a longer simple payback than solar alone. Battery incentives narrow the gap: the federal Cheaper Home Batteries program discounts eligible batteries, and in NSW the Peak Demand Reduction Scheme (PDRS) pays certificates for batteries that cut the evening peak. Batteries also add value solar alone cannot, such as reducing demand charges and storing excess generation for after-dark use. Q: What is the payback period for a 100 kW commercial solar system? A: Payback is roughly independent of system size, because both the installed cost per kilowatt and the annual savings per kilowatt scale together. A 100 kW system at the same electricity rate and self-consumption pays back in a similar time to a 50 kW system. Systems above 100 kW also become eligible for Large-scale Generation Certificates (LGCs), which add ongoing annual revenue. Q: Is commercial solar worth it for a business in 2026? A: For most Australian businesses with meaningful daytime electricity use, yes. A 3 to 7 year payback on an asset that lasts 25 or more years means the majority of its life is pure saving. The stronger your daytime load and the higher your electricity rate, the faster it pays back. Q: Which Australian state has the fastest commercial solar payback? A: On an identical reference system, the states with the strongest combination of solar resource and incentives pay back soonest, which usually means Queensland on production alone and Victoria once VEECs are counted. The live comparison table on this page ranks NSW, VIC, QLD, SA, and WA against the same 50 kW system, so the ordering reflects current certificate prices rather than a fixed claim. That reference system assumes 80% self-consumption and a $0.30/kWh rate, which places it at the fast end of the usual three to seven year range. Q: How much does my electricity rate change the payback period? A: More than anything else you control. On the same 50 kW system with the same incentives, moving from $0.25/kWh to $0.35/kWh takes roughly a year off the payback, because each kilowatt-hour of solar displaces a more expensive grid purchase. The rate sensitivity table on this page shows the exact effect state by state. ### How to Read a Commercial Electricity Bill in Australia URL: https://amperage.app/blog/how-to-read-commercial-electricity-bill Published: 2026-06-05 (updated 2026-07-19) Understand every line on your Australian commercial electricity bill. TOU rates, demand charges, network fees, and environmental levies explained. Q: What are demand charges on a commercial electricity bill? A: Demand charges are based on your peak power draw (measured in kW or kVA) during a billing period, separate from the energy (kWh) you consume. They reflect the capacity the network must reserve for your site. Q: What is a time-of-use (TOU) tariff? A: A TOU tariff charges different rates for peak, shoulder, and off-peak periods. Solar offsets daytime usage, which often falls in the more expensive peak and shoulder windows. Q: What are network charges on my bill? A: Network charges cover transporting electricity through the poles and wires. They include a daily supply charge and usage-based network charges, and they are listed separately from your energy retailer’s rates. ### What Size Solar System Does My Business Need? URL: https://amperage.app/blog/what-size-solar-system-warehouse-office-retail Published: 2026-06-05 (updated 2026-07-19) Solar system sizing guide by business type. See recommended kW ranges for warehouses, offices, and retail stores based on consumption profiles. Q: What size solar system does a warehouse need? A: Warehouses commonly need 30 kW to 100 kW or more, depending on floor area, equipment loads, and daytime operating hours. Sites with refrigeration or heavy machinery sit at the higher end. Q: How do I size a solar system for my business? A: Match system output to your daytime consumption. A common rule of thumb is to size to your daytime baseload so most generation is self-consumed rather than exported at low feed-in rates. Q: Can a commercial solar system be too big? A: Yes. Oversizing beyond your daytime consumption exports excess energy at low feed-in rates, which lengthens payback. The right size balances self-consumption against upfront cost. ### Demand Charges and Solar for Australian Business URL: https://amperage.app/blog/demand-charges-and-solar-australia Published: 2026-06-05 (updated 2026-08-08) How demand charges affect commercial solar savings, with a worked example: 50 kW off a 250 kW peak at $18/kW/month is worth $10,800 a year. Strategies to cut demand charges with solar, batteries, and load management. Q: Can solar reduce demand charges? A: Sometimes. Solar reduces demand charges only when your peak power draw occurs during solar generation hours. Peaks on cloudy days or after sunset are largely unaffected by solar alone. Because the charge is set by the single worst interval in the billing period, only the output you can rely on during that interval counts, which is why a 100 kW array might be credited with roughly 30 kW of firm reduction. Q: How much money does reducing demand by 50 kW save per year? A: Multiply the reduction by your demand rate and the number of billing months. At $18/kW/month, cutting 50 kW off the peak saves 50 x 18 x 12 = $10,800 a year. At $10/kW/month the same reduction is worth $6,000, and at $25/kW/month it is worth $15,000, so your demand rate decides whether peak shaving justifies capital. Q: How can I reduce demand charges with solar? A: Pair solar with battery storage or load management to shave peak draw, and shift flexible loads into solar generation hours. Batteries can discharge during peak windows to cut measured demand. Size the battery kW rating to the reduction you want and the kWh rating to the length of the peak, so a 50 kW reduction across a two-hour peak needs about 100 kWh of usable capacity set aside for demand duty. Q: What is the difference between demand charges and energy charges? A: Energy charges bill the total kWh you consume. Demand charges bill your highest power draw (kW or kVA) in the billing period, regardless of how much total energy you used. Energy charges are about averages and demand charges are about peaks, which is why solar reliably reduces one and not always the other. Q: What is a typical commercial demand charge rate in Australia? A: Commercial demand rates commonly sit between $10 and $25 per kW per month, depending on your network area and tariff. On a 250 kW peak that is between $30,000 and $75,000 a year on the demand line alone, before any energy is billed. The rate appears on your bill next to a demand or capacity line. Q: What is a demand ratchet and why does it matter? A: Some tariffs set your demand charge from the highest peak recorded in the last 12 months rather than the current month. Under a ratchet, one uncontrolled spike keeps costing you for a full year: a 250 kW spike at $18/kW/month locks in $54,000 of demand charges even if the site never draws that much again. Without a ratchet the same spike costs $4,500 and then clears. Q: Do demand charges apply per kW or per kVA? A: It depends on your tariff. kVA tariffs bill apparent power, so a poor power factor increases the charge for the same real load. At a 0.9 power factor, 50 kW of real demand is about 55.6 kVA, so the same physical reduction is worth more on a kVA tariff. Correcting power factor can reduce a kVA demand charge without changing your actual consumption at all. ## Documentation - [How Are the Recommendations Picked?](https://amperage.app/docs/how-recommendations-are-picked): The exact rules Amperage uses to pick its four recommended solar and battery systems from the sizing matrix: Energy Ideal, NPV Maximising, Grant Maximising and Self-Sufficiency Maximising. - [Comparing Battery Options](https://amperage.app/docs/comparing-battery-options): How Amperage compares up to three battery options against a project’s Base battery: what can differ, what stays shared, how each option is sized, and how to reuse a comparison set. - [Adding Loads and Export Limits to an Option](https://amperage.app/docs/option-adjustments): How one comparison option adds an extra load or an export limit on top of its battery: the Additional Loads Library, the Adjustments box on Solar & Battery, what moves in the numbers, and what happens when a Library row changes. - [Getting Started: Your First Project](https://amperage.app/docs/getting-started-first-project): A start-to-finish walkthrough of building your first Amperage project: bill entry, consumption upload, solar and battery setup, recommendations, and the customer deck. - [Entering Bill Data](https://amperage.app/docs/entering-bill-data): How to enter a customer bill in Amperage: reading or typing the bill, the Bill Card, checking and confirming a read, the Charges on the Bill ledger, time-of-use windows with Match Bill Timings, demand charges, Where the Money Goes, and the Network Tariff Review on Recommendation. - [Exporting and Sharing](https://amperage.app/docs/exporting-and-sharing): How Amperage projects leave the app: the Customer deck and the A4 PowerPoint, the Prepare and send review, the other exports in the ▾ menu, Edit Copy, and the Share with Customer web link. - [The Library](https://amperage.app/docs/the-library): What each section of the Amperage Library holds: hardware, consumption profiles, network and retail tariffs, battery comparison sets, additional loads, presentation slides, export templates and pricing templates. - [Analysis vs Proposal Projects](https://amperage.app/docs/analysis-vs-proposal-projects): The difference between Analysis and Proposal projects in Amperage: which stages each one has, which to start in, how to switch between them, and what carries over. - [How to Read the Pricing Page](https://amperage.app/docs/how-to-read-the-pricing-page): How the Amperage Pricing page works for each option: where the money goes, the cost sections, margin vs markup, the certificate cards, and the Across Options comparison. - [How to Read the Proposal Page](https://amperage.app/docs/how-to-read-the-proposal-output): How to read the Amperage Proposal page for each option: the band, the section rows, the checks before you send, the customer link and the A4 PowerPoint export. - [How the Modelling Works](https://amperage.app/docs/how-the-modelling-works): What sits behind every Amperage number: TMY weather matching, hourly solar production simulation, hourly battery dispatch simulation, and the lifetime financial model. - [Battery & Inverter Replacement Costs](https://amperage.app/docs/replacement-costs): How Amperage charges for replacing a battery and inverter mid-life: default trigger years, where the controls live in Analysis and Proposal projects, how blanks auto-derive, and where the cost shows up in payback, NPV, the cashflow chart and the proposal export. - [Australian Solar Incentives Explained](https://amperage.app/docs/australian-solar-incentives): STCs, LGCs, VEECs, the NSW PDRS and battery STCs (bSTC) explained: which Australian solar incentive schemes apply to a project, how they are valued, and how Amperage applies them automatically. - [Uploading Consumption Interval Data](https://amperage.app/docs/consumption-upload): Every file format the Amperage consumption upload accepts (vertical and horizontal CSV, Excel, raw NEM12), with working examples, the rules applied on upload, and a Claude prompt for converting messy interval exports. - [Glossary](https://amperage.app/docs/glossary): Definitions of the financial and energy terms used across Amperage: NPV, IRR, payback period, export ratio, self-sufficiency, TOU tariffs, demand charges, capex and more.