Terms of Use & Planning Estimate Disclaimer
Effective Date: October 1, 2026 · Last updated: October 25, 2026 · Website: https://getgridtally.com
Welcome to GetGridTally.com. GridTally is an independent project that publishes free home energy calculators, created and maintained by the site owner. By accessing or using our residential solar, battery storage, heat pump, EV home charger, HVAC BTU, and backup generator calculators, guides, or embeddable widgets, you agree to these Terms of Use and our Planning Estimate Disclaimer.
1. Preliminary Planning Estimate Disclaimer (No Professional-Client Relationship)
All calculations, kilowatt-hour (kWh) yield projections, Coefficient of Performance (COP) balance points, British Thermal Unit (BTU/hr) thermal loads, generator starting surge estimates, and circuit breaker amperage calculations generated by GetGridTally.com are provided strictly for preliminary educational and project-planning purposes:
- Not a Substitute for On-Site Inspection: Output from GetGridTally.com does not constitute a formal ACCA Manual J, Manual S, or Manual D load calculation, structural roof certification, or binding electrical load sign-off.
- Mandatory Code Compliance: Electrical panel capacity, conductor ampacity (AWG gauge and insulation temperature rating), GFCI protection, and disconnect switch requirements vary by jurisdiction under the US National Electrical Code (NFPA 70 / NEC), UK Wiring Regulations (BS 7671), Canadian Electrical Code (CSA C22.1), and Australian/New Zealand Wiring Rules (AS/NZS 3000). Always hire a licensed local electrician or HVAC contractor and obtain required municipal permits before installing solar inverters, battery storage walls, 240V EV charging circuits, or generator transfer switches.
2. Utility Tariff, Tax Credit & Rebate Disclaimer
Financial payback curves and 10-year cumulative cashflow projections depend on local utility rate structures (including time-of-use peak/off-peak schedules, daily fixed supply charges, and net-metering export buyback rates) and government incentive programs:
- 2026 Incentive Rules: Default presets reflect approximate 2026 rules based on public releases, including the December 31, 2025 expiration of US federal residential tax credits under IRC Sections 25D and 25C (Public Law 119-21), active US state/utility and IRA HEEHRA/HOMES point-of-sale rebates where implemented, Section 48E third-party lease credits, the UK 0% VAT relief on solar/batteries (through March 2027) and £7,500 Boiler Upgrade Scheme (BUS) grant, Canadian provincial and Greener Homes Affordability (CGHAP) programs, and Australian Federal Small-scale Technology Certificates (STCs).
- No Tax or Legal Advice: GetGridTally.com does not provide tax, accounting, or legal advice. Rebate funding caps, household income thresholds, and utility interconnection rules can change without notice. Always check the official government or utility program site and consult a qualified tax professional before signing an installation contract.
3. Advertising & External Reference Links Policy
To keep our calculators free without charging subscription fees or selling user contact data, GetGridTally.com is supported by programmatic display advertising served through Google AdSense:
- Outbound reference links inside our calculator cards point to official public government energy calculators, rebate directories, and electrical code bodies (including NREL PVWatts, DSIRE, ENERGY STAR, UK Ofgem, GOV.UK, and NRCan).
- We do not sell user contact data or operate commercial pay-per-lead forms; outbound reference links point directly to public government and standards portals.
- Our mathematical formulas and sizing outputs are 100% deterministic and independent of any third party.
4. License to Use Free Embeddable Calculator Widgets
GetGridTally.com grants bloggers, educators, contractors, and homeowners a free, non-exclusive, revocable license to embed our calculator widget on their websites using the <iframe> code provided in our footer modal, provided that the attribution link back to https://getgridtally.com remains unaltered and visible.
5. Limitation of Liability & Contact
Under no circumstances shall GetGridTally.com or its site owner be liable for any direct, indirect, incidental, or consequential damages arising from equipment sizing decisions, contractor quotes, utility bill variances, or electrical/HVAC installations performed using estimates from this website. For questions regarding these Terms, contact [email protected].
6. Changes to Calculator Presets & Terms
Because regional electricity tariffs, natural gas benchmarks, and government rebate programs change over time, GetGridTally.com reserves the right to update default calculator presets, formulas, and reference articles at any time without prior notice. Always enter the exact figures from your own utility bill and contractor quote when modeling a project. Continued use of the website constitutes acceptance of the current Terms of Use.