Solar panel cost in County Durham (TS27)

See realistic solar installation costs, savings and payback for TS27 (County Durham) 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
14.7 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£694
What you save every year
Profit Over 25 Years
£7,170
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

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 930 kWh per year on a south-facing roof. We value self-used electricity at 22.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
22.3p/kWh
Standing charge
63.5p/day
Sunshine yield (south)
930 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: £694, Upfront: £10,173, Break-even: 14.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1859 kWh 744 kWh 1116 kWh £166 £112 £277 £4,069 14.7 yrs £1,480
3 kW 2789 kWh 1116 kWh 1673 kWh £249 £167 £416 £6,104 14.7 yrs £2,221
4 kW 3718 kWh 1487 kWh 2231 kWh £332 £223 £555 £8,138 14.7 yrs £2,961
5 kW 4648 kWh 1859 kWh 2789 kWh £415 £279 £694 £10,173 14.7 yrs £3,701
6 kW 5578 kWh 2231 kWh 3347 kWh £498 £335 £832 £12,207 14.7 yrs £4,441
7 kW 6507 kWh 2603 kWh 3904 kWh £581 £390 £971 £14,242 14.7 yrs £5,182
8 kW 7437 kWh 2975 kWh 4462 kWh £664 £446 £1,110 £16,276 14.7 yrs £5,922

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: £808, Upfront: £12,273, Break-even: 15.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1859 kWh 1116 kWh 744 kWh £249 £74 £323 £6,169 19.1 yrs £296
3 kW 2789 kWh 1673 kWh 1116 kWh £373 £112 £485 £8,204 16.9 yrs £1,494
4 kW 3718 kWh 2231 kWh 1487 kWh £498 £149 £646 £10,238 15.8 yrs £2,692
5 kW 4648 kWh 2789 kWh 1859 kWh £622 £186 £808 £12,273 15.2 yrs £3,890
6 kW 5578 kWh 3347 kWh 2231 kWh £747 £223 £970 £14,307 14.8 yrs £5,088
7 kW 6507 kWh 3904 kWh 2603 kWh £871 £260 £1,131 £16,342 14.4 yrs £6,286
8 kW 7437 kWh 4462 kWh 2975 kWh £996 £297 £1,293 £18,376 14.2 yrs £7,484

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: £865, Upfront: £13,673, 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 1859 kWh 1301 kWh 558 kWh £290 £56 £346 £7,569 21.9 yrs £-646
3 kW 2789 kWh 1952 kWh 837 kWh £436 £84 £519 £9,604 18.5 yrs £781
4 kW 3718 kWh 2603 kWh 1116 kWh £581 £112 £692 £11,638 16.8 yrs £2,207
5 kW 4648 kWh 3254 kWh 1394 kWh £726 £139 £865 £13,673 15.8 yrs £3,634
6 kW 5578 kWh 3904 kWh 1673 kWh £871 £167 £1,038 £15,707 15.1 yrs £5,061
7 kW 6507 kWh 4555 kWh 1952 kWh £1,016 £195 £1,211 £17,742 14.6 yrs £6,488
8 kW 7437 kWh 5206 kWh 2231 kWh £1,161 £223 £1,385 £19,776 14.3 yrs £7,915

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: £883, Upfront: £15,423, Break-even: 17.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1859 kWh 1357 kWh 502 kWh £303 £50 £353 £9,319 26.4 yrs £-2,259
3 kW 2789 kWh 2036 kWh 753 kWh £454 £75 £530 £11,354 21.4 yrs £-764
4 kW 3718 kWh 2714 kWh 1004 kWh £606 £100 £706 £13,388 19.0 yrs £732
5 kW 4648 kWh 3393 kWh 1255 kWh £757 £125 £883 £15,423 17.5 yrs £2,227
6 kW 5578 kWh 4072 kWh 1506 kWh £908 £151 £1,059 £17,457 16.5 yrs £3,723
7 kW 6507 kWh 4750 kWh 1757 kWh £1,060 £176 £1,236 £19,492 15.8 yrs £5,218
8 kW 7437 kWh 5429 kWh 2008 kWh £1,211 £201 £1,412 £21,526 15.2 yrs £6,714

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: £894, Upfront: £17,173, Break-even: 19.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1859 kWh 1394 kWh 465 kWh £311 £46 £358 £11,069 31.0 yrs £-3,917
3 kW 2789 kWh 2092 kWh 697 kWh £467 £70 £536 £13,104 24.4 yrs £-2,376
4 kW 3718 kWh 2789 kWh 930 kWh £622 £93 £715 £15,138 21.2 yrs £-835
5 kW 4648 kWh 3486 kWh 1162 kWh £778 £116 £894 £17,173 19.2 yrs £706
6 kW 5578 kWh 4183 kWh 1394 kWh £933 £139 £1,073 £19,207 17.9 yrs £2,248
7 kW 6507 kWh 4881 kWh 1627 kWh £1,089 £163 £1,252 £21,242 17.0 yrs £3,789
8 kW 7437 kWh 5578 kWh 1859 kWh £1,244 £186 £1,430 £23,276 16.3 yrs £5,330

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: £905, Upfront: £19,623, Break-even: 21.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1859 kWh 1432 kWh 428 kWh £319 £43 £362 £13,519 37.3 yrs £-6,276
3 kW 2789 kWh 2147 kWh 641 kWh £479 £64 £543 £15,554 28.6 yrs £-4,689
4 kW 3718 kWh 2863 kWh 855 kWh £639 £86 £724 £17,588 24.3 yrs £-3,102
5 kW 4648 kWh 3579 kWh 1069 kWh £798 £107 £905 £19,623 21.7 yrs £-1,515
6 kW 5578 kWh 4295 kWh 1283 kWh £958 £128 £1,086 £21,657 19.9 yrs £72
7 kW 6507 kWh 5011 kWh 1497 kWh £1,118 £150 £1,268 £23,692 18.7 yrs £1,659
8 kW 7437 kWh 5726 kWh 1711 kWh £1,278 £171 £1,449 £25,726 17.8 yrs £3,246

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.

Seasonal solar output in TS27

Monthly generation per kilowatt of solar panels

kWh 34 Jan 49 Feb 82 Mar 109 Apr 118 May 112 Jun 113 Jul 102 Aug 85 Sep 58 Oct 39 Nov 29 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 48.5% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 38 kWh per month; the average month produces around 77 kWh. So a typical 4 kW home system would generate roughly 150 kWh in winter, or 310 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
22.31p/kWh
Daily Fixed Charge
63.50p/day
Local Sunshine
930kWh/kW
A 1 kW system generates ~930 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

Houses: 76% • Flats: 6% • Bungalows: 18% Based on 3,648 properties

Coverage

County Durham (57%)|Hartlepool (43%)

Areas Covered

Blackhalls & Hesledens, Hart, Castle Eden & Passfield, Rural West, Burn Valley, Sedgefield

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q1 2026

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.