East of England Solar: Hertfordshire and Cambridgeshire Compared

East of England Solar: Hertfordshire and Cambridgeshire Compared

Hertfordshire and Cambridgeshire share a regional border but have distinct solar market characteristics. Understanding the differences helps Hertfordshire homeowners benchmark their quotes and helps Cambridgeshire homeowners considering a Hertfordshire-based installer (or vice versa). Compare like for like by checking each quote against what a solar panel installation should include.

Property Mix Differences

Hertfordshire's housing stock skews toward suburban semi-detached and detached homes built between 1930-1980. Cambridgeshire — particularly the Fens — has a higher proportion of:

• Rural detached homes and farmhouses
• Period properties in conservation villages
• Newer developments around Cambridge city
• Working farms and agricultural buildings

Pricing Comparison

System

Hertfordshire

Cambridgeshire

4kW residential	£6,800-£8,200	£6,200-£7,500
5kW + 10kWh battery	£14,000-£16,500	£13,000-£15,500
8kW residential	£10,800-£13,500	£10,500-£13,000

Cambridgeshire installs run roughly 5-8% below Hertfordshire on equivalent specifications, primarily reflecting lower trade wages and slightly less expensive scaffolding/access.

Yield Comparison

Both regions sit in a similar irradiance band:

• Hertfordshire: 1,050-1,100 kWh/kWp
• Cambridgeshire (south): 1,000-1,050 kWh/kWp
• Cambridgeshire (Fens): 980-1,030 kWh/kWp

Hertfordshire has a small but consistent yield advantage across the eastern region. For a 5kW system, that's around 250-400 kWh per year more generation.

Conservation Area and Listed Building Considerations

Both counties have substantial historic property stock. Hertfordshire's conservation areas concentrate in St Albans, Hertford, Hitchin and Berkhamsted. Cambridgeshire's are more distributed across rural villages.

In both regions, rear-elevation installs typically proceed under permitted development. Two cases are different and both changed on 27 August 2026: a listed dwellinghouse is now outside Class A under paragraph A.1(2)(g), so it needs planning permission as well as listed building consent, and in a conservation area the restriction under A.1(2)(e) bites on a wall, balcony or roof enclosure fronting a highway rather than on a roof slope. We have not published an approval-rate figure here because neither council publishes one broken down to solar applications. Royston is the sharpest illustration of why the county question is not pedantic: the boundary ran through the town centre until 1896 and SG8 still spans both counties, so see solar panel installation in Royston for how we establish the deciding authority before designing anything.

Practical Takeaway

For Hertfordshire homeowners benchmarking quotes, expect prices roughly 5-8% above the East Anglian average. For yield, expect slightly better than Cambridgeshire performance. For a Hertfordshire-specific quote, get in touch.