Question 1

What can an 800W solar system power in the UK?

Accepted Answer

An 800W plug-in solar system on a sunny UK day generates approximately 4.5 kWh. It fully covers a fridge-freezer, Wi-Fi router and a daytime washing-machine cycle on solar alone. With a 1.92 kWh battery, evening loads (TV, kettle, lights) can also run from stored solar.

Question 2

Can balcony solar run air conditioning UK?

Accepted Answer

Partly. A portable A/C needs ~6 kWh/day to run 6 hours, so 800W covers about 65%. A split-system A/C (COP 3.5) only needs 1.7 kWh — fully covered by 800W on a sunny day.

Question 3

Can solar panels run a washing machine UK?

Accepted Answer

Yes — a 30°C cold cycle uses ~0.6 kWh, easily covered by a 400W or 800W plug-in kit if timed for midday.

Question 4

How long does a solar battery last on an A/C unit?

Accepted Answer

A 1.92 kWh battery runs a split-system A/C for ~6.8 hours of cooling at COP 3.5, or a portable A/C for under 2 hours.

What Can My Solar System Power? UK Appliance Calculator (2026)