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Solar panel cost in Buckinghamshire (HP22)

See realistic solar installation costs, savings and payback for HP22 (Buckinghamshire) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

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
10.0 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£976
What you save every year
Profit Over 25 Years
£14,634
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: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • 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

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £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 Eastern, the current unit rate is 26.38p/kWh with a 53.94p/day standing charge. Your postcode’s south-facing sunshine yield is 983 kWh/kW — 26 below the regional median (1009).

Read the full story

A typical roof here lands around 6.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 983 kWh per year on a south-facing roof. We value self-used electricity at 26.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.4p/kWh
Standing charge
53.9p/day
Sunshine yield (south)
983 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: £813, Upfront: £8,139, Break-even: 10.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1966 kWh 786 kWh 1179 kWh £207 £118 £325 £3,256 10.0 yrs £3,251
3 kW 2948 kWh 1179 kWh 1769 kWh £311 £177 £488 £4,883 10.0 yrs £4,877
4 kW 3931 kWh 1572 kWh 2359 kWh £415 £236 £651 £6,511 10.0 yrs £6,503
5 kW 4914 kWh 1966 kWh 2948 kWh £519 £295 £813 £8,139 10.0 yrs £8,128
6 kW 5897 kWh 2359 kWh 3538 kWh £622 £354 £976 £9,767 10.0 yrs £9,754
7 kW 6880 kWh 2752 kWh 4128 kWh £726 £413 £1,139 £11,394 10.0 yrs £11,380
8 kW 7862 kWh 3145 kWh 4717 kWh £830 £472 £1,301 £13,022 10.0 yrs £13,005

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £974, Upfront: £10,239, Break-even: 10.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1966 kWh 1179 kWh 786 kWh £311 £79 £390 £5,356 13.7 yrs £2,439
3 kW 2948 kWh 1769 kWh 1179 kWh £467 £118 £585 £6,983 11.9 yrs £4,709
4 kW 3931 kWh 2359 kWh 1572 kWh £622 £157 £779 £8,611 11.0 yrs £6,978
5 kW 4914 kWh 2948 kWh 1966 kWh £778 £197 £974 £10,239 10.5 yrs £9,248
6 kW 5897 kWh 3538 kWh 2359 kWh £933 £236 £1,169 £11,867 10.1 yrs £11,518
7 kW 6880 kWh 4128 kWh 2752 kWh £1,089 £275 £1,364 £13,494 9.9 yrs £13,787
8 kW 7862 kWh 4717 kWh 3145 kWh £1,244 £314 £1,559 £15,122 9.7 yrs £16,057

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,055, Upfront: £11,639, Break-even: 11.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1966 kWh 1376 kWh 590 kWh £363 £59 £422 £6,756 16.0 yrs £1,683
3 kW 2948 kWh 2064 kWh 885 kWh £544 £88 £633 £8,383 13.2 yrs £4,275
4 kW 3931 kWh 2752 kWh 1179 kWh £726 £118 £844 £10,011 11.9 yrs £6,866
5 kW 4914 kWh 3440 kWh 1474 kWh £907 £147 £1,055 £11,639 11.0 yrs £9,458
6 kW 5897 kWh 4128 kWh 1769 kWh £1,089 £177 £1,266 £13,267 10.5 yrs £12,049
7 kW 6880 kWh 4816 kWh 2064 kWh £1,270 £206 £1,477 £14,894 10.1 yrs £14,641
8 kW 7862 kWh 5504 kWh 2359 kWh £1,452 £236 £1,688 £16,522 9.8 yrs £17,232

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,079, Upfront: £13,389, 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 1966 kWh 1435 kWh 531 kWh £379 £53 £432 £8,506 19.7 yrs £126
3 kW 2948 kWh 2152 kWh 796 kWh £568 £80 £647 £10,133 15.7 yrs £2,814
4 kW 3931 kWh 2870 kWh 1061 kWh £757 £106 £863 £11,761 13.6 yrs £5,503
5 kW 4914 kWh 3587 kWh 1327 kWh £946 £133 £1,079 £13,389 12.4 yrs £8,191
6 kW 5897 kWh 4305 kWh 1592 kWh £1,136 £159 £1,295 £15,017 11.6 yrs £10,879
7 kW 6880 kWh 5022 kWh 1857 kWh £1,325 £186 £1,511 £16,644 11.0 yrs £13,567
8 kW 7862 kWh 5739 kWh 2123 kWh £1,514 £212 £1,726 £18,272 10.6 yrs £16,255

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,095, Upfront: £15,139, Break-even: 13.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1966 kWh 1474 kWh 491 kWh £389 £49 £438 £10,256 23.4 yrs £-1,495
3 kW 2948 kWh 2211 kWh 737 kWh £583 £74 £657 £11,883 18.1 yrs £1,258
4 kW 3931 kWh 2948 kWh 983 kWh £778 £98 £876 £13,511 15.4 yrs £4,010
5 kW 4914 kWh 3685 kWh 1228 kWh £972 £123 £1,095 £15,139 13.8 yrs £6,763
6 kW 5897 kWh 4423 kWh 1474 kWh £1,167 £147 £1,314 £16,767 12.8 yrs £9,515
7 kW 6880 kWh 5160 kWh 1720 kWh £1,361 £172 £1,533 £18,394 12.0 yrs £12,268
8 kW 7862 kWh 5897 kWh 1966 kWh £1,556 £197 £1,752 £20,022 11.4 yrs £15,020

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,111, Upfront: £17,589, Break-even: 15.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1966 kWh 1513 kWh 452 kWh £399 £45 £444 £12,706 28.6 yrs £-3,816
3 kW 2948 kWh 2270 kWh 678 kWh £599 £68 £667 £14,333 21.5 yrs £-999
4 kW 3931 kWh 3027 kWh 904 kWh £799 £90 £889 £15,961 18.0 yrs £1,818
5 kW 4914 kWh 3784 kWh 1130 kWh £998 £113 £1,111 £17,589 15.8 yrs £4,635
6 kW 5897 kWh 4540 kWh 1356 kWh £1,198 £136 £1,333 £19,217 14.4 yrs £7,452
7 kW 6880 kWh 5297 kWh 1582 kWh £1,397 £158 £1,556 £20,844 13.4 yrs £10,268
8 kW 7862 kWh 6054 kWh 1808 kWh £1,597 £181 £1,778 £22,472 12.6 yrs £13,085

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, 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.

Before you request quotes in Buckinghamshire

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Understand DNO, G98 and G99 export limits

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Insights for HP22

Figures below are tailored to HP22 — click through for full league tables.

Big-Roof Britain Rank #473 of 2182
5.6 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1102 of 2996
10.0 years (UK avg 10.8 years)
~£976 /yr • £9,767 upfront
Standing-Charge Drag Rank #613 of 2996
20.2% (UK avg 26.6%) drag on savings
£197 fixed • ~£976 /yr value
Aspect Penalty View ranking →
East −20.9% West −19.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in HP22

Monthly generation per kilowatt of solar panels

kWh 37 Jan 51 Feb 84 Mar 110 Apr 118 May 119 Jun 121 Jul 107 Aug 92 Sep 66 Oct 44 Nov 33 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 49.3% of an average month (Dec–Feb)

Best / worst month: Jul / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 40 kWh per month; the average month produces around 82 kWh. So a typical 4 kW home system would generate roughly 161 kWh in winter, or 328 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.38p/kWh
Daily Fixed Charge
53.94p/day
Local Sunshine
983kWh/kW
A 1 kW system generates ~983 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
6.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 80% • Flats: 11% • Bungalows: 9% Based on 10,811 properties

Coverage

Buckinghamshire (100%)

Areas Covered

Wendover, Halton & Stoke Mandeville, Aston Clinton & Weston Turville, Bierton, Kingsbrook & Wing, Quainton, Aylesbury East, Ridgeway East + 5 more

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q3 2026

Installation costs: DESNZ/MCS data, March 2026 (TIC)

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 Eastern

HP21 (Buckinghamshire)
≈3.6 km away
Local sunshine: ~984 kWh/kWp · +0% vs HP22
HP20 (Buckinghamshire)
≈4.6 km away
Local sunshine: ~982 kWh/kWp · -0% vs HP22
HP19 (Buckinghamshire)
≈5.8 km away
Local sunshine: ~982 kWh/kWp · -0% vs HP22
HP17 (Buckinghamshire)
≈6.0 km away
Local sunshine: ~971 kWh/kWp · -1% vs HP22
HP23 (Dacorum)
≈7.2 km away
Local sunshine: ~980 kWh/kWp · -0% vs HP22
HP27 (Buckinghamshire)
≈8.1 km away
Local sunshine: ~971 kWh/kWp · -1% vs HP22

Similar sunshine across the UK

HP13 (Buckinghamshire)
~983 kWh/kWp · -0% vs HP22
BS12 (South Gloucestershire)
~983 kWh/kWp · +0% vs HP22
OX16 (Cherwell)
~983 kWh/kWp · +0% vs HP22