Panels for a 3-Bed House
Find the right system size for your roof
Panel count depends on your electricity use, roof space and direction — not on a rule of thumb. Get a recommended size and what it should cost.
Size My SystemFree calculator. No contact details required to see your result.
Find the right system size for your roof
Panel count depends on your electricity use, roof space and direction — not on a rule of thumb. Get a recommended size and what it should cost.
Size My SystemHow many panels for a 3-bed house?
How many solar panels for a 3-bed house: ANSWER: 8-10 panels (3.2-4kW). CONSUMPTION: average 3-bed uses 2,900-3,500 kWh/yr. GENERATION: 8 panels (3.2kW) = 2,900-3,350 kWh/yr. 10 panels (4kW) = 3,600-4,200 kWh/yr. ROOF SPACE: 14-18m² needed. Most 3-bed houses have 20-30m² usable roof — plenty of room. COST: £5,000-£7,000 at 0% VAT. SAVINGS: £480-£850/yr without battery. £700-£1,100/yr with battery. RECOMMENDATION: 10 panels (4kW) — the extra 2 panels cost £500-£700 more but generate 25% more electricity over 25 years. Always go as big as your roof allows.
Frequently Asked Questions
Related: Home Heating Systems
Solar panels are most powerful when combined with an efficient heating system. Heat pumps use solar-generated electricity to heat your home at 300-400% efficiency — making them the ideal partner for solar.
Heat pumps use electricity at 300-400% efficiency, making them ideal partners for solar.
From our sister site Home Heat Pump Guide
Find the right system size for your roof
Panel count depends on your electricity use, roof space and direction — not on a rule of thumb. Get a recommended size and what it should cost.
Size My SystemFree calculator. No contact details required to see your result.