Salix Interest-Free Loans for Solar: 2026 Guide
Interest-free recyclable loans for UK public-sector bodies to fund energy efficiency and renewable projects — repaid from electricity bill savings.
Eligibility — who can apply
- UK public-sector body: schools, academies, FE colleges, NHS Trusts, central / local government, universities, blue-light services
- Charities operating in the public interest
- Must produce project savings forecast
- Project savings must cover the repayments, typically over five to eight years
What you can fund with Salix Loans
- Solar PV installation (any size)
- Battery storage (alongside PV)
- LED lighting upgrades
- BMS / building controls upgrades
- Heat pumps
- EV chargepoints (where directly tied to net-zero strategy)
How to apply — step by step
The typical route from first check to final repayment, walked through by KMM project managers.
Pre-application call
Salix and KMM verify eligibility + project fit.
Application drafted (2–6 weeks)
Five core checks: annual electricity baseline, generation forecast, savings projection, project programme with delivery date, supplier credentials.
Salix decision (typically 6–10 weeks)
Loan offer issued, with repayments set to match the project's savings.
Loan offer signed
Terms accepted. Project starts.
Install + repayment
Loan drawn down on invoice payment. Equal annual repayments from operating budget against actual savings.
Loan repaid
System continues generating savings for 15–20 more years, flowing to operating budget unencumbered.
KMM application support
KMM produces the Salix-compliant savings projection, supplier quote, and delivery programme. We sign the supplier statement and stand behind the savings model with verifiable historical install data.
Real KMM commercial installs
Every case study below is a real KMM customer with measured Year 1 generation, real payback maths and named project manager.
Doctors' Surgery Solar Rescue: 100kW + Battery Backup
A Market Deeping doctors' surgery had been let down by a previous solar installer — non-stop issues, no monitoring, zero confidence. KMM installed 100kW solar, 100kW battery, Tigo optimisers on every panel.
UK Farm Solar Case Study: 3-Year Payback
UK farm sized its solar at 50,000 kWh against 37,000 kWh usage to future-proof. KMM modelled a 3-year 3-month payback and roughly £500k of 30-year savings.
UK Farm Solar: Cutting Energy Costs on a Dryer
UK farm with grid-only power and a summer grain dryer turned to solar to harness rising energy costs, drive its dryer, and earn export income.
Check Salix loan eligibility for your site
The form below goes straight to Steve or Kieren. No call-centre, no scripts. We respond to every enquiry 9-5, Monday to Friday.
Check Salix loan eligibility for your site
Free drone survey, funding check and a bound-in proposal within 7 working days.
