BrightGridFAQs
Answers by category.
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Check Your SavingsSolar
How much roof space do I need?
A typical 4kWp system needs around 20m² of usable, unshaded roof — we confirm this on survey.
Do panels work in winter?
Yes, though generation is lower — UK annual estimates already average across the seasons.
Battery
Can I add a battery later?
In most cases, yes, provided your inverter is hybrid-compatible or gets upgraded at the same time.
How long do batteries last?
Most manufacturers warranty 10 years, with meaningful capacity remaining well beyond that.
EV
Can I charge a PHEV and a full EV from the same charger?
Yes — a single 7kW home charger works for both, though a PHEV will typically charge fully much sooner.
Heat pumps
Do I need to replace my radiators?
Air-to-water systems often need larger radiators or underfloor heating; air-to-air systems don't use radiators at all.
Finance
Are you the lender?
No — finance is provided by our finance partners, subject to their eligibility and affordability checks. We install; they handle the credit agreement.
Maintenance
What happens if I miss my service window?
You can reschedule up to our stated cutoff before the visit — we'll always confirm this when we notify you.