Peace of mind for your installation.
Figures audited by the Energy Performance Validation Service (EPVS) provide independent verification that our projections are accurate, transparent and trustworthy.
What independent validation actually means.
When a solar installer quotes you a payback period and an annual saving, the entire calculation depends on assumptions — yield per kWp, self-consumption rate, future electricity prices, export tariff revenue. EPVS audits those assumptions. If the maths is wrong, EPVS flags it before the quote leaves Ecoaim.
Independent verification
Every yield projection, system size and savings figure we provide is independently audited by EPVS.
Transparent maths
No "from £X" surprises. EPVS validates the model behind every number we put in writing.
Trustworthy projections
EPVS auditing is the strongest external validation of a solar installer's technical paperwork.
Peace of mind
When the numbers say payback in 6-9 years, you can trust they have been verified by an independent third party.
FAQs
What is EPVS? +
EPVS is the Energy Performance Validation Service — an independent body that audits solar installer projections (yield, system size, savings) to ensure they are accurate, transparent and reproducible.
Why does EPVS matter when choosing an installer? +
Solar quotes can vary wildly between installers because the yield modelling and assumptions vary. EPVS auditing means our maths is independently checked — so you can compare quotes on a like-for-like basis.
Does every installer use EPVS? +
No. EPVS membership is voluntary. Installers who commit to EPVS auditing are signalling that their projections will stand up to independent scrutiny.
How does EPVS auditing work? +
EPVS reviews the technical paperwork behind each quote — PVGIS model inputs, roof orientation, shading assumptions, electricity rates used in payback calculations. They check the figures are realistic and the methodology is sound.
Is there an extra cost to me? +
No. EPVS auditing is part of Ecoaim's standard quote process. Customers benefit from the validation without paying for it directly.
Want EPVS-audited figures for your home?
Free quote within 24 hours of survey — and every number we put in writing is verified by EPVS.
Free quote in 24 hours.
No high-pressure sales. No commission-driven scripts. Just a no-obligation survey + transparent quote — covering every postcode in Scotland's Central Belt.