Solar Panels in Cambridge: Costs, Output, and Local Guide

Does solar work in Cambridge?

Cambridge is one of the sunniest cities in England. Located in the East of England under the UKPN (UK Power Networks) distribution area, the city typically yields around 1,000–1,050 kWh per kWp per year — matching the best yields in the country.

A 4kWp system in Cambridge generates approximately 4,000–4,200 kWh per year, comfortably covering a typical household's annual electricity consumption with a meaningful export surplus.

East Anglia's climate — drier and sunnier than much of England — benefits Cambridge. The flat surrounding landscape means minimal shading from terrain for most properties.

How much does solar cost in Cambridge?

Cambridge is one of the most expensive housing markets outside London, and installation costs reflect this. Expect to pay roughly £1,550–£1,750 per kWp, making a 4kWp system around £6,200–£7,000 installed.

Despite higher installation costs, Cambridge's strong yield produces solid payback periods — typically 7–9 years for well-sited homes. A battery (typically £3,000–£4,500 for a 5kWh unit installed) can capture the summer generation surplus effectively.

Your electricity network: UKPN (UK Power Networks)

UK Power Networks covers London, the South East, and East Anglia, including Cambridgeshire.

For solar installations:

• Systems up to 3.68kW (single-phase): G98 notification — installer informs UKPN within 28 days of commissioning, no prior approval needed. UKPN's Smart Connect portal handles G98 submissions
• Systems above 3.68kW (single-phase): G99 pre-approval required before installation — UKPN's online system streamlines this
• UKPN is one of the more efficient DNOs for processing solar applications

Typical Cambridge system

Cambridge's planning environment requires careful consideration:

• Conservation areas: Much of central Cambridge — including most of the city centre and many Victorian suburbs — is a designated conservation area. In these zones, solar on the principal or side elevation visible from a highway requires planning permission rather than being permitted development
• Listed buildings: Cambridge has a high concentration of listed buildings (university colleges, churches, and many residential properties). Solar on listed buildings requires listed building consent — this is typically only granted for non-visible rear installations, if at all
• Suburban areas: Areas like Trumpington, Cherry Hinton, Arbury, and Chesterton have more standard residential housing where normal permitted development rules apply

For properties in conservation areas:

• Rear-facing installations not visible from the street may still be permitted development
• Contact Cambridge City Council's planning department to confirm your property's status before proceeding

Typical system sizes for eligible properties: 4kWp for most semis and terraces; 4–6kWp for detached homes in the suburbs.

Local grants and schemes

Cambridge homeowners may be eligible for:

• ECO4: Available to households on qualifying benefits or with a low EPC rating — active until December 2026
• Warm Homes Local Grant: Delivered through Cambridgeshire County Council and Cambridge City Council — check current eligibility
• Warm Homes Plan: Government successor to ECO4, expected late 2026
• Smart Export Guarantee (SEG): Cambridge's excellent yield makes SEG export income significant — worth comparing rates across licensed suppliers

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