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Solar Panels in UB11 (Hillingdon)

See if solar pays off for you in Hillingdon — price, savings and payback in under a minute (official UK data).

Solar Calculator

Change the settings below to see how costs and savings work for your situation.

System Size

Roof Direction

Battery Storage

Export Value

Your Numbers

Break-even
12.3 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£827
What you save every year
Profit Over 25 Years
£10,491
After paying itself off, you're this much ahead

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How we calculate this

Solar generation: Based on typical south-facing roof at 35° angle. We account for weather, dirt, and system losses (14%).

How much you'll use directly:

  • Without battery: You'll use about 40% of what you generate. The rest gets sold back to the grid.
  • With 5 kWh battery: You'll use about 70% (battery stores extra for evening use).
  • With 10 kWh battery: You'll use about 75% (more storage means less exported).
  • Panel-only payback: Bigger systems don’t shorten payback—cost and savings rise together per kW.
  • Battery & payback: Batteries raise self-use and cut bills, but added hardware cost often lengthens break-even at typical UK rates.
  • When a battery can still make sense:
    • Evening-heavy usage patterns
    • Time-of-use tariffs / cheap night rates
    • Low export rate vs. high unit rate
    • Heat pump or EV charging synergy
    • Optional backup/resilience (system-dependent)
    • Lower evening-hour CO₂ vs. grid

Costs: Battery prices are typically £700 per kWh. Export tariffs vary by supplier (usually 5–15p per kWh).

Grid connection: Systems up to about 3.7 kW typically need just a notification (G98). Larger systems may need permission (G99).

These are typical values based on average usage patterns. Your actual results will vary based on your roof, shading, and how you use electricity.

Your area in context

In Southern, the current unit rate is 26.48p/kWh with a 44.62p/day standing charge. Your postcode’s south-facing sunshine yield is 996 kWh/kW — 5 below the regional median (1001).

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 996 kWh per year on a south-facing roof. We value self-used electricity at 26.5p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.5p/kWh
Standing charge
44.6p/day
Sunshine yield (south)
996 kWh/kW
Export price (baseline)
10p/kWh

Browse the scenarios below. Each battery size has its own expand — open the one that matches your plan (or just explore). For each system size (2–8 kW) we show annual output, how much you use directly, what gets exported, annual benefit, upfront cost, break-even, and a 20-year net. Negative numbers are possible — that’s the honest trade-off when adding more battery than your usage profile justifies.

No battery 5 kW example → Annual benefit: £827, Upfront: £10,173, Break-even: 12.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1993 kWh 797 kWh 1196 kWh £211 £120 £331 £4,069 12.3 yrs £2,543
3 kW 2989 kWh 1196 kWh 1793 kWh £317 £179 £496 £6,104 12.3 yrs £3,815
4 kW 3985 kWh 1594 kWh 2391 kWh £422 £239 £661 £8,138 12.3 yrs £5,087
5 kW 4982 kWh 1993 kWh 2989 kWh £528 £299 £827 £10,173 12.3 yrs £6,358
6 kW 5978 kWh 2391 kWh 3587 kWh £633 £359 £992 £12,207 12.3 yrs £7,630
7 kW 6974 kWh 2790 kWh 4185 kWh £739 £418 £1,157 £14,242 12.3 yrs £8,902
8 kW 7970 kWh 3188 kWh 4782 kWh £844 £478 £1,322 £16,276 12.3 yrs £10,173

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £991, Upfront: £12,273, Break-even: 12.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1993 kWh 1196 kWh 797 kWh £317 £80 £396 £6,169 15.6 yrs £1,757
3 kW 2989 kWh 1793 kWh 1196 kWh £475 £120 £594 £8,204 13.8 yrs £3,685
4 kW 3985 kWh 2391 kWh 1594 kWh £633 £159 £793 £10,238 12.9 yrs £5,614
5 kW 4982 kWh 2989 kWh 1993 kWh £791 £199 £991 £12,273 12.4 yrs £7,542
6 kW 5978 kWh 3587 kWh 2391 kWh £950 £239 £1,189 £14,307 12.0 yrs £9,470
7 kW 6974 kWh 4185 kWh 2790 kWh £1,108 £279 £1,387 £16,342 11.8 yrs £11,399
8 kW 7970 kWh 4782 kWh 3188 kWh £1,266 £319 £1,585 £18,376 11.6 yrs £13,327

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,073, Upfront: £13,673, Break-even: 12.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1993 kWh 1395 kWh 598 kWh £369 £60 £429 £7,569 17.6 yrs £1,014
3 kW 2989 kWh 2092 kWh 897 kWh £554 £90 £644 £9,604 14.9 yrs £3,270
4 kW 3985 kWh 2790 kWh 1196 kWh £739 £120 £858 £11,638 13.6 yrs £5,527
5 kW 4982 kWh 3487 kWh 1494 kWh £923 £149 £1,073 £13,673 12.7 yrs £7,784
6 kW 5978 kWh 4185 kWh 1793 kWh £1,108 £179 £1,287 £15,707 12.2 yrs £10,041
7 kW 6974 kWh 4882 kWh 2092 kWh £1,293 £209 £1,502 £17,742 11.8 yrs £12,298
8 kW 7970 kWh 5579 kWh 2391 kWh £1,477 £239 £1,717 £19,776 11.5 yrs £14,554

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,097, Upfront: £15,423, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1993 kWh 1455 kWh 538 kWh £385 £54 £439 £9,319 21.2 yrs £-539
3 kW 2989 kWh 2182 kWh 807 kWh £578 £81 £658 £11,354 17.2 yrs £1,816
4 kW 3985 kWh 2909 kWh 1076 kWh £770 £108 £878 £13,388 15.2 yrs £4,171
5 kW 4982 kWh 3637 kWh 1345 kWh £963 £135 £1,097 £15,423 14.1 yrs £6,527
6 kW 5978 kWh 4364 kWh 1614 kWh £1,156 £161 £1,317 £17,457 13.3 yrs £8,882
7 kW 6974 kWh 5091 kWh 1883 kWh £1,348 £188 £1,536 £19,492 12.7 yrs £11,237
8 kW 7970 kWh 5818 kWh 2152 kWh £1,541 £215 £1,756 £21,526 12.3 yrs £13,592

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,114, Upfront: £17,173, Break-even: 15.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1993 kWh 1494 kWh 498 kWh £396 £50 £446 £11,069 24.8 yrs £-2,158
3 kW 2989 kWh 2242 kWh 747 kWh £594 £75 £668 £13,104 19.6 yrs £263
4 kW 3985 kWh 2989 kWh 996 kWh £791 £100 £891 £15,138 17.0 yrs £2,684
5 kW 4982 kWh 3736 kWh 1245 kWh £989 £125 £1,114 £17,173 15.4 yrs £5,105
6 kW 5978 kWh 4483 kWh 1494 kWh £1,187 £149 £1,337 £19,207 14.4 yrs £7,526
7 kW 6974 kWh 5231 kWh 1744 kWh £1,385 £174 £1,559 £21,242 13.6 yrs £9,947
8 kW 7970 kWh 5978 kWh 1993 kWh £1,583 £199 £1,782 £23,276 13.1 yrs £12,368

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,130, Upfront: £19,623, Break-even: 17.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1993 kWh 1534 kWh 458 kWh £406 £46 £452 £13,519 29.9 yrs £-4,477
3 kW 2989 kWh 2301 kWh 687 kWh £609 £69 £678 £15,554 22.9 yrs £-1,990
4 kW 3985 kWh 3069 kWh 917 kWh £813 £92 £904 £17,588 19.5 yrs £497
5 kW 4982 kWh 3836 kWh 1146 kWh £1,016 £115 £1,130 £19,623 17.4 yrs £2,983
6 kW 5978 kWh 4603 kWh 1375 kWh £1,219 £137 £1,356 £21,657 16.0 yrs £5,470
7 kW 6974 kWh 5370 kWh 1604 kWh £1,422 £160 £1,582 £23,692 15.0 yrs £7,957
8 kW 7970 kWh 6137 kWh 1833 kWh £1,625 £183 £1,808 £25,726 14.2 yrs £10,443

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

Figures are illustrative and use the same method as the calculator above. For exact results, adjust your roof direction, tariff, and usage in the calculator.

Insights for UB11

Figures below are tailored to UB11 — click through for full league tables.

Solar Payback Index Rank #900 of 2997
10.7 years (UK avg 11.3 years)
~£950 /yr • £10,173 upfront
Standing-Charge Drag Rank #763 of 2997
17.1% (UK avg 21.7%) drag on savings
£163 fixed • ~£950 /yr value

Your Area at a Glance

Your Electricity Rate
26.48p/kWh
Daily Fixed Charge
44.62p/day
Local Sunshine
996kWh/kW
A 1 kW system generates ~996 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
For houses & bungalows in this area

Local Property Data

Property Types

No EPC data available for this outcode

Coverage

Hillingdon (100%)

Areas Covered

Hayes Town, Uxbridge, Yiewsley, West Drayton

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q4 2025

Installation costs: MCS certified installer data, March 2025

Property data: EPC open data (Open Government Licence), aggregated

All estimates are typical values. Actual results vary based on your specific situation, roof characteristics, and usage patterns.

Compare nearby areas

Nearby in Southern

UB7 (Hillingdon)
≈1.9 km away
Local sunshine: ~1,007 kWh/kWp · +1% vs UB11
UB3 (Hillingdon)
≈2.0 km away
Local sunshine: ~996 kWh/kWp · -0% vs UB11
UB4 (Hillingdon)
≈3.0 km away
Local sunshine: ~996 kWh/kWp · -0% vs UB11
UB18 (Ealing)
≈3.1 km away
Local sunshine: ~996 kWh/kWp · -0% vs UB11
UB10 (Hillingdon)
≈3.9 km away
Local sunshine: ~1,000 kWh/kWp · +0% vs UB11
UB8 (Hillingdon)
≈4.0 km away
Local sunshine: ~1,000 kWh/kWp · +0% vs UB11

Similar sunshine across the UK

KT12 (Elmbridge)
~996 kWh/kWp · -0% vs UB11
KT3 (Kingston upon Thames)
~996 kWh/kWp · -0% vs UB11
NP6 (Monmouthshire)
~996 kWh/kWp · +0% vs UB11