Solar panels in Basingstoke, South East
Roofs in Basingstoke get about 1,014 hours of usable sunlight a year — less than 91% of the cities we've measured. Here's what that means in cost, savings and payback, using real rooftop data rather than a national average.
Check your specific roof in Basingstoke → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Basingstoke solar system costs
A 8-panel system (3.2 kW) is about right for an average Basingstoke home using 2,500 kWh a year. It would produce roughly 2,758 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 2,758 | £5,440 | £454 | 12 yrs |
| 12 panels | 4.8 kW | 4,137 | £8,160 | £620 | 13.2 yrs |
| 16 panels | 6.4 kW | 5,516 | £10,880 | £785 | 13.9 yrs |
| 20 panels | 8 kW | 6,895 | £13,600 | £951 | 14.3 yrs |
| 26 panels | 10.4 kW | 8,964 | £17,680 | £1,199 | 14.7 yrs |
How we worked this out for Basingstoke
Every number on this page comes from these seven steps. Nothing is a national average — the sunlight figure is measured from Basingstoke rooftops.
| # | Step | Result |
|---|---|---|
| 1 | What one panel makes here 400W ÷ 1000 × 1,014 sun hrs × 0.85 system losses |
345 kWh/yr |
| 2 | Panels needed to cover typical usage 2,500 kWh ÷ 345 kWh per panel |
8 panels |
| 3 | System size 8 panels × 400W |
3.20 kW |
| 4 | Annual production 3.20 kW × 1,014 hrs × 0.85 |
2,758 kWh/yr |
| 5 | Installed cost 3,200 W × £1.70 per watt (VAT is 0% on UK installs) |
£5,440 |
| 6 | Annual saving 875 kWh used as generated × 26.1p + 1,883 kWh exported × 12p |
£454/yr |
| 7 | Payback £5,440 ÷ £454 per year |
12 years |
Step 6 is where most calculators quietly overstate things. Only 32% of what a system this size produces in Basingstoke is used the moment it is generated; the other 1,883 kWh is exported and paid at the Smart Export Guarantee rate, not your import price. Valuing every kWh at the full 26.1p retail rate — which many calculators do — would show a payback of 7.6 years instead of the 12 we show. That 4.4-year difference is the single biggest reason our figures look worse than other sites' for Basingstoke.
Assumptions: 400W panels, 15% system losses (inverter, wiring, heat, soiling), £1.70/W installed, 2,500 kWh typical annual household use, 26.1p/kWh electricity. Change any of those and every figure above moves — which is exactly why a single national "solar costs X" number is misleading.
Notice that payback barely improves as systems get bigger, and eventually gets worse. That's because you can only save money on electricity you were going to buy anyway. Once a system covers your usage, extra panels mostly generate exports at a much lower rate.
Why Basingstoke gets 1,014 sun hours
That figure comes from Google's analysis of real rooftops across Basingstoke — it already accounts for shading from trees, chimneys and neighbouring buildings, which is why it's lower than the raw "hours of daylight" figures you'll see elsewhere. An unusually open, unshaded roof in Basingstoke reaches about 1,073 hours, roughly 6% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,014 hrs/yr |
|---|---|
| Unshaded roof | 1,073 hrs/yr |
| Electricity rate (South East avg) | 26.1p/kWh |
| Installed cost assumed | £1.70/W |
| Panel size assumed | 400 W |
| Typical household usage | 2,500 kWh/yr |
| Power used as generated | 32% |
| Paid for exported power | 12p/kWh (SEG) |
| Rooftops sampled here | 9 |
| Google imagery from | 2021 |
When Basingstoke actually produces
Annual totals hide the thing that catches people out: 42% of Basingstoke's yearly sunlight arrives in May–July, and just 9% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 30 | |
| Feb | 49 | |
| Mar | 77 | |
| Apr | 110 | |
| May | 136 | |
| Jun | 147 | |
| Jul | 141 | |
| Aug | 120 | |
| Sep | 89 | |
| Oct | 57 | |
| Nov | 34 | |
| Dec | 25 |
That is a severe seasonal swing — Basingstoke produces roughly 6.0× as much in Jun as in Dec. A system sized to cover your annual usage will overproduce badly in summer and fall well short in winter, so how your utility credits exported power matters more here than in most places.
The annual total is measured from Google's rooftop imagery. Its split across months is calculated from solar geometry at Basingstoke's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How Basingstoke compares to the other 788 cities
| Measure | Basingstoke | Rank of 788 |
|---|---|---|
| Usable sunlight | 1,014 hrs | 716th |
| Sunlight lost to shade | 5% | 361st most |
| Median roof size | 159 m² | 514th largest |
| Electricity rate | 26.1p | 147th highest |
| Payback | 12 yrs | 540th fastest |
| Grid carbon | 479 kg/MWh | 547th dirtiest |
What actually stands out about Basingstoke:
- Plenty of roof to work with. Typical roofs here fit around 51 panels — roughly 6× what an average home needs. Roof size will not be what limits your system in Basingstoke.
- Older imagery. Google's aerial capture of Basingstoke dates from 2021. Tree growth and new construction since then are not reflected.
Cities with almost the same sunlight
The closest matches to Basingstoke's 1,014 usable sun hours elsewhere in the UK. Sunlight varies far more across Britain than electricity prices do, so these are the places where a system of the same size produces roughly the same amount.
| City | Sun hrs | Rate | Payback |
|---|---|---|---|
| Hereford, West Midlands | 1,014 | 26.1p | 12 yrs |
| Bristol, South West | 1,015 | 26.1p | 12 yrs |
| Gloucester, South West | 1,013 | 26.1p | 12 yrs |
| Bedford, East of England | 1,013 | 26.1p | 12 yrs |
Nearby cities
See all of South East → statewide sunlight, rates, incentives and every city we've measured.
Basingstoke solar questions
How many solar panels do I need in Basingstoke?
About 8 panels for an average home using 2,500 kWh a year. Basingstoke roofs get 1,014 usable sun hours, so each 400W panel produces roughly 345 kWh annually. A typical Basingstoke roof fits about 51 panels, so roof space is unlikely to be your limit.
Is solar worth it in Basingstoke?
At 26.1p/kWh and 1,014 sun hours, a typical system pays for itself in about 12 years and returns roughly £5,921 over a 25-year panel life. That is slower than average, so compare several quotes before committing. Exported power earns 12p/kWh under the Smart Export Guarantee, well below the 26.1p you pay to import.
How much do solar panels cost in Basingstoke?
A 3.2 kW system costs about £5,440 before incentives. That works out near £1.70 per watt installed. Roof pitch, shading, electrical panel upgrades and equipment choice move the price most, which is why quotes for the same house can differ by thousands.
Worth reading before you buy
Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average South East electricity rates. Not a quote and not financial advice. Your roof, usage, utility plan and local incentives will change these numbers — get real quotes before buying.