The short answer
42.0% of Congleton East households live in detached houses, against 36.6% across the borough and 33.0% in Congleton West. Those owners can often pick the best of several slopes, add a garage roof, or use a garden frame of up to 9 m². A larger array may need network approval first.
Where the detached houses are
The 2021 Census counts 6,202 households in Congleton East, of which 42.0% live in detached houses, 32.8% in semis and 17.5% in terraces. Congleton West, with 6,636 households, is more mixed: 33.0% detached and 36.9% semi-detached. Across Cheshire East the detached share is 36.6% (Census 2021). Ownership is high in both wards, at 72.1% in the east and 73.6% in the west, so most of these households can decide for themselves. Homes by ward has the full tables.
The Census does not record roof shapes or directions, and a detached house can sit on any orientation. What it does tell us is that a large part of the town has the kind of house where there is usually more than one place to put panels.
Choosing between slopes
A detached house usually offers two main slopes, and often a hipped end, a rear wing or a garage too. Ranking them is the first job. The PVGIS runs for this guide show how much each direction makes, as a share of the best Congleton roof (PVGIS 5.3):
- south at 35°: about 100%;
- south-east or south-west at 35°: about 95% and 94%;
- east or west at 35°: about 81% and 80%;
- north at 35°: about 56%.
Those are unshaded figures. In practice a tall tree, a neighbouring gable or a chimney can move a slope down the ranking, so a shade check at the house matters more than the compass alone. Where the best two slopes face east and west, splitting the array is a sound choice: east and west roofs works through the monthly figures. The full direction and pitch table is on output.
Hipped roofs and awkward shapes
Many detached houses built in the last century have hipped roofs, where all four sides slope. Hips leave triangular end faces and shorter main slopes, which fit fewer whole panels. The triangular faces can still be useful if they face south, but cutting into them usually means smaller rows, more edge clearance and more fixings for each panel. Dormers, roof lights and soil vent pipes break up a slope in the same way. A good layout drawing shows each panel, the clearances and the shade from anything on the roof.
How large to go
More roof tempts a larger system. The table shows what three sizes would make on a south roof at 35° in Congleton, and what the government’s 2025/26 price data implies for each (DESNZ cost data). It is a yardstick for reading quotes, not a price.
| System | kWh a year | Indicative cost |
|---|---|---|
| 4 kWp | 3,635 | £6,400 to £7,200 |
| 6 kWp | 5,452 | £9,300 to £9,800 |
| 8 kWp | 7,270 | £12,400 to £13,000 |
Size is best set by how much electricity the house uses and when. A household that is out all day will export much of what a large array makes in summer, so the value depends on the export tariff and on whether a battery or a hot-water diverter is added: see export and self-use and batteries. A house with an electric car or a heat pump planned can usually use more of a larger array directly.
The grid limit
On a normal single-phase supply, systems up to 16 A per phase, or 3.68 kW, are connected first and notified to the network within 28 days under the G98 procedure. Anything larger, including solar with a battery that takes the total over that limit, needs approval from the network operator before it is installed, under G99. Larger detached-house systems often cross that line. An inverter limited to the threshold is sometimes an alternative. Find the operator for your street with the ENA postcode search, and read grid connection for the steps.
Garages and outbuildings
A detached garage, workshop or summer house can carry panels in its own right. For an unlisted house, panels on an outbuilding roof follow the same permitted development rules as the house roof. The questions are practical: is the structure strong enough, is the roof covering in good order, and how far is the cable run back to the consumer unit? Long runs need heavier cable and a route that does not cross a neighbour’s land or a shared drive without agreement.
Frames in the garden
Class B of Part 14 of the permitted development order allows stand-alone solar in the garden of a house, up to 9 m² of panel, within limits on height and distance from the boundary. A frame can be angled for the best output whatever way the house faces, and it can be reached for cleaning without ladders. The trade-offs are the space it takes, the trench for the cable and, in some gardens, shade from fences and trees close to the ground.
The rules changed with SI 2026/896 from 27 August 2026, and work started under the old rules may be completed under them until 26 August 2027. In a conservation area, a frame nearer the road than the house needs a prior approval decision first. Around a listed building the position is narrower again, so ask the council: see listed buildings and conservation areas.
Heating and the case for a larger array
Mains gas is the only central heating for 82.5% of households in Congleton East and 82.6% in Congleton West, with oil at 1.3% in the east (Census 2021). In a gas-heated house, panels mostly power lighting, appliances and electronics, plus hot water if a diverter is fitted. That limits how much of a very large array the house can use as it is made, which is why size should follow consumption.
The picture changes if the household plans a heat pump or an electric car. Both add electricity demand, and an electric car charged at home on sunny weekends or working-from-home days can soak up summer surplus. If either is likely within a few years, it can make sense to size the array and the inverter for that future load now, rather than adding a second system later with its own scaffolding and paperwork. The Boiler Upgrade Scheme exists for heat pumps; check its current terms with the government before planning around it.
Who decides on a detached house
With roughly seven in ten households owning their home in both wards, the decision usually rests with the people living there. Joint owners should both agree, and anyone with a mortgage should check whether the lender wants to be told; some do for any alteration that adds equipment to the roof. Home insurers usually want to know too. Renting a detached house changes the picture entirely, because only the owner can agree to panels: see renters and landlords.
Before getting quotes
List the slopes you might use, note anything that shades them, and decide whether a garage or garden frame is in or out. Ask each firm to price the same options, so the quotes can be laid side by side, and to show the expected yearly output for each slope separately. Choosing an installer has the checks to run on the firms themselves, and the roof and route check confirms the planning route for your house.