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Solar panel cost in Darlington (DL3)

See realistic solar installation costs, savings and payback for DL3 (Darlington) 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
11.0 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£743
What you save every year
Profit Over 25 Years
£10,436
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 Northern, the current unit rate is 25.22p/kWh with a 64.29p/day standing charge. Your postcode’s south-facing sunshine yield is 924 kWh/kW — 2 below the regional median (926).

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 924 kWh per year on a south-facing roof. We value self-used electricity at 25.2p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.2p/kWh
Standing charge
64.3p/day
Sunshine yield (south)
924 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: £743, Upfront: £8,139, 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 1847 kWh 739 kWh 1108 kWh £186 £111 £297 £3,256 11.0 yrs £2,689
3 kW 2771 kWh 1108 kWh 1663 kWh £280 £166 £446 £4,883 11.0 yrs £4,033
4 kW 3695 kWh 1478 kWh 2217 kWh £373 £222 £594 £6,511 11.0 yrs £5,377
5 kW 4618 kWh 1847 kWh 2771 kWh £466 £277 £743 £8,139 11.0 yrs £6,721
6 kW 5542 kWh 2217 kWh 3325 kWh £559 £333 £892 £9,767 11.0 yrs £8,066
7 kW 6466 kWh 2586 kWh 3879 kWh £652 £388 £1,040 £11,394 11.0 yrs £9,410
8 kW 7389 kWh 2956 kWh 4434 kWh £745 £443 £1,189 £13,022 11.0 yrs £10,754

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: £884, Upfront: £10,239, Break-even: 11.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1847 kWh 1108 kWh 739 kWh £280 £74 £353 £5,356 15.2 yrs £1,713
3 kW 2771 kWh 1663 kWh 1108 kWh £419 £111 £530 £6,983 13.2 yrs £3,620
4 kW 3695 kWh 2217 kWh 1478 kWh £559 £148 £707 £8,611 12.2 yrs £5,526
5 kW 4618 kWh 2771 kWh 1847 kWh £699 £185 £884 £10,239 11.6 yrs £7,433
6 kW 5542 kWh 3325 kWh 2217 kWh £839 £222 £1,060 £11,867 11.2 yrs £9,340
7 kW 6466 kWh 3879 kWh 2586 kWh £978 £259 £1,237 £13,494 10.9 yrs £11,246
8 kW 7389 kWh 4434 kWh 2956 kWh £1,118 £296 £1,414 £15,122 10.7 yrs £13,153

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: £954, Upfront: £11,639, Break-even: 12.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1847 kWh 1293 kWh 554 kWh £326 £55 £382 £6,756 17.7 yrs £876
3 kW 2771 kWh 1940 kWh 831 kWh £489 £83 £572 £8,383 14.6 yrs £3,063
4 kW 3695 kWh 2586 kWh 1108 kWh £652 £111 £763 £10,011 13.1 yrs £5,251
5 kW 4618 kWh 3233 kWh 1386 kWh £815 £139 £954 £11,639 12.2 yrs £7,439
6 kW 5542 kWh 3879 kWh 1663 kWh £978 £166 £1,145 £13,267 11.6 yrs £9,627
7 kW 6466 kWh 4526 kWh 1940 kWh £1,141 £194 £1,335 £14,894 11.2 yrs £11,814
8 kW 7389 kWh 5173 kWh 2217 kWh £1,305 £222 £1,526 £16,522 10.8 yrs £14,002

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: £975, Upfront: £13,389, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1847 kWh 1349 kWh 499 kWh £340 £50 £390 £8,506 21.8 yrs £-706
3 kW 2771 kWh 2023 kWh 748 kWh £510 £75 £585 £10,133 17.3 yrs £1,566
4 kW 3695 kWh 2697 kWh 998 kWh £680 £100 £780 £11,761 15.1 yrs £3,839
5 kW 4618 kWh 3371 kWh 1247 kWh £850 £125 £975 £13,389 13.7 yrs £6,111
6 kW 5542 kWh 4046 kWh 1496 kWh £1,020 £150 £1,170 £15,017 12.8 yrs £8,383
7 kW 6466 kWh 4720 kWh 1746 kWh £1,190 £175 £1,365 £16,644 12.2 yrs £10,655
8 kW 7389 kWh 5394 kWh 1995 kWh £1,360 £200 £1,560 £18,272 11.7 yrs £12,927

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: £989, Upfront: £15,139, Break-even: 15.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1847 kWh 1386 kWh 462 kWh £349 £46 £396 £10,256 25.9 yrs £-2,343
3 kW 2771 kWh 2078 kWh 693 kWh £524 £69 £593 £11,883 20.0 yrs £-15
4 kW 3695 kWh 2771 kWh 924 kWh £699 £92 £791 £13,511 17.1 yrs £2,313
5 kW 4618 kWh 3464 kWh 1155 kWh £874 £115 £989 £15,139 15.3 yrs £4,642
6 kW 5542 kWh 4157 kWh 1386 kWh £1,048 £139 £1,187 £16,767 14.1 yrs £6,970
7 kW 6466 kWh 4849 kWh 1616 kWh £1,223 £162 £1,385 £18,394 13.3 yrs £9,299
8 kW 7389 kWh 5542 kWh 1847 kWh £1,398 £185 £1,582 £20,022 12.7 yrs £11,627

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: £1,003, Upfront: £17,589, 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 1847 kWh 1422 kWh 425 kWh £359 £42 £401 £12,706 31.7 yrs £-4,681
3 kW 2771 kWh 2134 kWh 637 kWh £538 £64 £602 £14,333 23.8 yrs £-2,296
4 kW 3695 kWh 2845 kWh 850 kWh £717 £85 £802 £15,961 19.9 yrs £88
5 kW 4618 kWh 3556 kWh 1062 kWh £897 £106 £1,003 £17,589 17.5 yrs £2,473
6 kW 5542 kWh 4267 kWh 1275 kWh £1,076 £127 £1,204 £19,217 16.0 yrs £4,858
7 kW 6466 kWh 4979 kWh 1487 kWh £1,256 £149 £1,404 £20,844 14.8 yrs £7,242
8 kW 7389 kWh 5690 kWh 1700 kWh £1,435 £170 £1,605 £22,472 14.0 yrs £9,627

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 Darlington

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 DL3

Figures below are tailored to DL3 — click through for full league tables.

Big-Roof Britain Rank #1511 of 2182
4.7 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1969 of 2996
11.0 years (UK avg 10.8 years)
~£743 /yr • £8,139 upfront
Standing-Charge Drag Rank #2324 of 2996
31.6% (UK avg 26.6%) drag on savings
£235 fixed • ~£743 /yr value
Aspect Penalty View ranking →
East −21.9% West −21.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in DL3

Monthly generation per kilowatt of solar panels

kWh 34 Jan 48 Feb 81 Mar 107 Apr 116 May 111 Jun 115 Jul 103 Aug 85 Sep 57 Oct 39 Nov 28 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 47.3% 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 36 kWh per month; the average month produces around 77 kWh. So a typical 4 kW home system would generate roughly 146 kWh in winter, or 308 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.22p/kWh
Daily Fixed Charge
64.29p/day
Local Sunshine
924kWh/kW
A 1 kW system generates ~924 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: 72% • Flats: 21% • Bungalows: 6% Based on 12,383 properties

Coverage

Darlington (100%)

Areas Covered

Park East, Pierremont, Cockerton, College, Park West, Northgate, Hummersknott, Brinkburn & Faverdale + 4 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 Northern

DL98 (Darlington)
≈0.5 km away
Local sunshine: ~912 kWh/kWp · -1% vs DL3
DL2 (Darlington)
≈1.1 km away
Local sunshine: ~922 kWh/kWp · -0% vs DL3
DL1 (Darlington)
≈1.5 km away
Local sunshine: ~911 kWh/kWp · -1% vs DL3
DL5 (County Durham)
≈9.8 km away
Local sunshine: ~923 kWh/kWp · -0% vs DL3
DL4 (County Durham)
≈12.4 km away
Local sunshine: ~915 kWh/kWp · -1% vs DL3
TS16 (Stockton-on-Tees)
≈13.6 km away
Local sunshine: ~920 kWh/kWp · -0% vs DL3

Similar sunshine across the UK

LL17 (Denbighshire)
~924 kWh/kWp · +0% vs DL3
S14 (Sheffield)
~924 kWh/kWp · +0% vs DL3
DY8 (Dudley)
~924 kWh/kWp · -0% vs DL3