Resources
Plain-English UK renewable energy resources
Everything we'd want to know before buying a solar, battery, EV, heat pump, boiler or AC system in 2026. Glossary, tariff comparisons, grant routes, calculators, 42 deep-dive blog posts. Free, no email gate.
Reference
Knowledge & definitions
Renewable energy glossary
55 plain-English UK terms — MCS, SEG, BUS, G99, V2H, COP, F-Gas and more.
OpenSmart Export Guarantee (SEG)
Compare all 10 UK SEG tariffs in 2026. Earnings calculator. 6-step apply guide.
OpenDNO applications (G98 / G99)
Northern Powergrid, NGED + SP Energy Networks. Why we handle this in-house.
OpenDecision tools
Quotes, calculators & finance
Grant routes
Grants & schemes
Solar panel grants UK 2026
What's actually available — ECO4, HUG, Warm Homes, SEG. Honest eligibility.
OpenBoiler Upgrade Scheme (BUS)
£7,500-£9,000 heat pump grant. Full eligibility + application walkthrough.
OpenPSDS (public sector)
Up to 100% capital grant for schools, NHS, councils. Salix-administered.
OpenHow we work
Process & trust
Recent guides
Latest from the blog
June 2026
Does Direct Sunlight Affect Your Home Battery?
Worried about your Sigenergy battery in full summer sun? The honest answer: no safety risk, but a shaded spot keeps it performing and lasting longer.
Read guideJune 2026
Can You Use a Tesla Model Y for V2H? (2026 UK Guide)
Can a 2026 Tesla Model Y power your home with an adapter? The honest UK answer: V2L only on some trims — no Tesla does true V2H. What works instead.
Read guideJune 2026
The weekend the grid paid you to use electricity
Wholesale electricity went negative for nine hours across all 14 UK regions on Saturday. The real regional data — and how to actually cash in.
Read guideMay 2026
Worcester Bosch vs Vaillant Boiler UK 2026: Which Brand to Choose
Worcester Bosch vs Vaillant — UK 2026 honest comparison from a Gas Safe installer who fits both. Spec, warranty, real-world reliability, hydrogen-readiness.
Read guideMay 2026
When to Replace a Boiler vs Repair It: 2026 UK Decision Guide
Should you repair your old boiler or replace it? Honest 2026 decision framework — age, repair cost, efficiency loss, fuel-cost projections and the heat-pump alternative.
Read guideMay 2026
Combi vs System vs Regular Boiler UK 2026: Which One for Your Home?
Combi, system or regular boiler — which one's right for your UK home in 2026? Honest decision guide covering household size, water pressure, hot water demand and future heat-pump pathway.
Read guideNeed help applying any of this to your property?
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