Frodsham · an independent guide, not an installer
Solar panel installer Frodsham: a guide for a town under the hill
Frodsham grew below a sandstone ridge, and on the shortest days that ridge decides how much sun some roofs see. Is your house under the hill, on Main Street, up on Overton, towards the marshes ? Where it sits, which way the roof faces and whether it is in a conservation area shape the answer more than any brochure.
Tool · hill-shade checker
Does the hill take your winter sun?
Pick where the house sits, which way the roof faces and the system size. You get the yearly and December output PVGIS models for that spot with the real lie of the land, at a 35° pitch, and how much the terrain takes away. Your choices stay in your browser.
3,768kWh a year
112kWh in December
0%of the year lost to the land, against open sky
PVGIS 5.3 with terrain horizon, 35° pitch, 14% losses. The terrain model is coarse and leaves out buildings and trees.
Raise before you sign
- Ask for an MCS performance estimate with a shade assessment done on site, not only from a map.
- Check whether the house is in one of Frodsham’s four conservation areas or is listed.
The hill
Why the ridge matters in December and hardly at all in June
The 2006 conservation area appraisal describes the town lying “below the spring-line of a scarp slope” (Frodsham appraisal). At the foot of that slope the land rises up to 17.2° above the southern horizon, and to about 18° towards the south-east. In midsummer the sun climbs to about 60°, so the ridge is irrelevant. On the shortest day it climbs to about 13°, and from the hill foot it is hidden until shortly before solar noon.
Over a whole year the loss is small, about 3.6% for a south roof, because summer carries most of the output. The cost falls on winter, when a home uses most electricity. The hill and winter sun explains the method and the limits of the terrain data.
The old town
Four conservation areas, slate roofs and a thatched row
Frodsham (Town); Frodsham, Castle Park; Frodsham, Overton, Five Crosses; Frodsham, Overton, St Lawrences: four of the 96 conservation areas in Cheshire West and Chester carry the town’s name (planning data). The town appraisal notes Welsh slate as the usual roof, some thatch and clay tile, a row of seventeenth-century thatched cottages on Main Street and many Grade II listed buildings along it.
For an unlisted house in any of them, a pitched roof slope stays permitted development; listed buildings need consent. The four conservation areas · listed and thatched homes · history and roofs
| Where | December kWh | Year kWh |
|---|---|---|
| Main Street | 27.9 | 942 |
| Under the hill | 19.1 | 908 |
| Overton hilltop | 28.3 | 942 |
| Towards the marshes | 28.2 | 943 |
Homes
Mostly owned, mostly houses
The Frodsham ward has 4,172 households. 76.1% own their home, 37.2% live in detached houses and 35.1% in semis, and 80.7% heat with mains gas alone (Census 2021). Across the borough 68.3% own. 12.1% rent privately and 9.5% live in flats, where someone else may decide: renters and flats. The full tables, with neighbouring Helsby, are on homes by ward.
Output
What a Frodsham roof makes
Across 56 combinations of direction and pitch, PVGIS rates the best Frodsham roof, south-facing at 40°, at 943 kWh per kWp a year. At 35°, south gives 941, east 744, west 753 and north 515 (JRC). Those are open-sky figures; the checker above adds the hill.
Electricity you use as it is generated displaces electricity you would buy, and larger suppliers must offer a price for what you send to the grid (Ofgem). Read on: the full output table, east and west roofs and where the units go.
Cost
Prices households actually paid
For 2025/26 the government’s figures put the UK median at £1,595 per kW for systems of 4 kW or less, and the North West average at £1,800 (DESNZ). A listed or thatched building adds drawings and an application; a steep hillside plot can add scaffold and access costs.
Panels and batteries installed in a home are zero-rated for VAT until 31 March 2027, after which 5% applies (HMRC).
More on what solar costs in Frodsham and on help with paying.
| System | At the UK median | At the North West average | kWh a year |
|---|---|---|---|
| 3 kWp | £4,800 | £5,400 | 2,823 |
| 4 kWp | £6,400 | £7,200 | 3,764 |
| 5 kWp | £7,700 | £8,100 | 4,706 |
| 6 kWp | £9,300 | £9,800 | 5,647 |
Schemes in west Cheshire
Help that reaches Frodsham
- Warm Homes: Local Grant: households on lower incomes, owning or privately renting a home rated EPC D to G, can seek help until 31 March 2028, and the works can include solar panels (council page).
- Switch Together Solar: the council’s group-buy, through which 473 people in the borough had systems fitted in its 2023 to 2025 rounds; the most recent registration closed on 25 September 2026 (council page).
- The borough had 11,740 solar sites by the end of 2025, roughly double the 5,759 of 2019 (DESNZ); see solar take-up near Frodsham.
Before any contract
- The firm’s MCS certification for solar, checked on the MCS database, and its consumer code (RECC or HIES); TrustMark if a scheme requires it.
- Its filings on Companies House, and an insurance-backed guarantee standing behind the workmanship warranty.
- A shade reading taken at the house, with December figures, if the house sits under the hill.
The people behind this: about the guide. Where the figures come from: data and sources. Shade beyond the hill: trees and shade and Overton and the hillside. Everything else: all guides, FAQs, the question form and the contact page. Legal: privacy, terms.
Frodsham solar, plainly answered
Does Frodsham Hill really shade houses below it?
For homes tucked under the ridge, yes, mostly in winter. PVGIS run with the terrain shows a south roof there losing about 3.6% of its year and about 32% of its December output, because the land to the south and south-east rises up to 17.2°. On Main Street the effect is close to nil.
Can I have panels in one of the Frodsham conservation areas?
Usually, on an unlisted house. Panels on a pitched roof slope stay permitted development there within the size limits. Walls and balconies facing the road are excluded, flat roofs need the council’s prior approval, and a listed building needs planning permission and Listed Building Consent whatever its location.
Which way should panels face under the hill?
If you have a choice, the slope that faces south-west or west. Under the ridge the land blocks the low sun from the south-east in the morning, but the western sky is open, so a west-facing slope there loses nothing to the terrain in our runs.
How much would panels make in Frodsham?
PVGIS puts an unshaded south roof at 35° in Frodsham at about 941 kWh a year for each kWp, so roughly 3,764 kWh from a 4 kWp system. Homes beneath the hill come in a few per cent lower, and shade from trees comes off every figure.
Is this site run by an installer?
No. It is an independent guide published by SEO-DONS LTD. It installs, sells and surveys nothing, and it does not name firms. Questions sent through the form are answered by email.
This page draws on
- Frodsham (Town) conservation area appraisal, adopted 2006 — Vale Royal Borough Council, now held by Cheshire West and Chester
- Conservation area boundaries for England — Planning Data platform
- PVGIS version 5.3, with terrain horizon — JRC, European Commission
- Census 2021: housing type, tenure and heating by ward — ONS (Nomis)
- Selling exported electricity: the SEG — Ofgem
- What small solar installations cost, 2025/26 — UK government energy department (DESNZ)
- HMRC guidance on VAT for energy-saving materials — HM Revenue and Customs
- Help with home energy: support schemes — Cheshire West and Chester
- Switch Together Solar in west Cheshire — Cheshire West and Chester
- Renewable sites and capacity by council area — UK government energy department (DESNZ)
- Check an installer on the MCS database — MCS
- Company records search — Companies House
- The General Permitted Development Order 2015, Part 14 — legislation.gov.uk
Read on 3 November 2026. If any of them has moved on, the form below reaches us.
A question about solar on a Frodsham roof?
Tell us roughly where the house sits, under the hill, on Main Street, up on Overton or towards the marshes, which way the roof faces and what you want to know. SEO-DONS LTD publishes this guide and answers by email.
What happens next
- Your message reaches SEO-DONS LTD, the publisher of this Frodsham guide.
- We look at the figures and rules for where you live and answer by email.
- No calls, no visits, and no commitment from sending it.