Solar panel cost in Westmorland and Furness (LA23)

See realistic solar installation costs, savings and payback for LA23 (Westmorland and Furness) 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
15.8 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£773
What you save every year
Profit Over 25 Years
£7,109
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 6.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 846 kWh per year on a south-facing roof. We value self-used electricity at 23.0p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
23.0p/kWh
Standing charge
46.9p/day
Sunshine yield (south)
846 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: £644, Upfront: £10,173, 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 1693 kWh 677 kWh 1016 kWh £156 £102 £258 £4,069 15.8 yrs £1,082
3 kW 2539 kWh 1016 kWh 1523 kWh £234 £152 £386 £6,104 15.8 yrs £1,623
4 kW 3385 kWh 1354 kWh 2031 kWh £312 £203 £515 £8,138 15.8 yrs £2,164
5 kW 4232 kWh 1693 kWh 2539 kWh £390 £254 £644 £10,173 15.8 yrs £2,705
6 kW 5078 kWh 2031 kWh 3047 kWh £468 £305 £773 £12,207 15.8 yrs £3,246
7 kW 5924 kWh 2370 kWh 3555 kWh £546 £355 £901 £14,242 15.8 yrs £3,787
8 kW 6770 kWh 2708 kWh 4062 kWh £624 £406 £1,030 £16,276 15.8 yrs £4,328

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: £754, Upfront: £12,273, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1693 kWh 1016 kWh 677 kWh £234 £68 £302 £6,169 20.4 yrs £-135
3 kW 2539 kWh 1523 kWh 1016 kWh £351 £102 £453 £8,204 18.1 yrs £847
4 kW 3385 kWh 2031 kWh 1354 kWh £468 £135 £603 £10,238 17.0 yrs £1,830
5 kW 4232 kWh 2539 kWh 1693 kWh £585 £169 £754 £12,273 16.3 yrs £2,812
6 kW 5078 kWh 3047 kWh 2031 kWh £702 £203 £905 £14,307 15.8 yrs £3,794
7 kW 5924 kWh 3555 kWh 2370 kWh £819 £237 £1,056 £16,342 15.5 yrs £4,777
8 kW 6770 kWh 4062 kWh 2708 kWh £936 £271 £1,207 £18,376 15.2 yrs £5,759

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: £809, Upfront: £13,673, Break-even: 16.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1693 kWh 1185 kWh 508 kWh £273 £51 £324 £7,569 23.4 yrs £-1,094
3 kW 2539 kWh 1777 kWh 762 kWh £409 £76 £486 £9,604 19.8 yrs £109
4 kW 3385 kWh 2370 kWh 1016 kWh £546 £102 £648 £11,638 18.0 yrs £1,313
5 kW 4232 kWh 2962 kWh 1269 kWh £682 £127 £809 £13,673 16.9 yrs £2,516
6 kW 5078 kWh 3555 kWh 1523 kWh £819 £152 £971 £15,707 16.2 yrs £3,719
7 kW 5924 kWh 4147 kWh 1777 kWh £955 £178 £1,133 £17,742 15.7 yrs £4,922
8 kW 6770 kWh 4739 kWh 2031 kWh £1,092 £203 £1,295 £19,776 15.3 yrs £6,125

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: £826, Upfront: £15,423, Break-even: 18.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1693 kWh 1236 kWh 457 kWh £285 £46 £330 £9,319 28.2 yrs £-2,711
3 kW 2539 kWh 1853 kWh 686 kWh £427 £69 £496 £11,354 22.9 yrs £-1,442
4 kW 3385 kWh 2471 kWh 914 kWh £569 £91 £661 £13,388 20.3 yrs £-173
5 kW 4232 kWh 3089 kWh 1143 kWh £712 £114 £826 £15,423 18.7 yrs £1,097
6 kW 5078 kWh 3707 kWh 1371 kWh £854 £137 £991 £17,457 17.6 yrs £2,366
7 kW 5924 kWh 4325 kWh 1600 kWh £996 £160 £1,156 £19,492 16.9 yrs £3,635
8 kW 6770 kWh 4942 kWh 1828 kWh £1,139 £183 £1,322 £21,526 16.3 yrs £4,905

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: £837, Upfront: £17,173, Break-even: 20.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1693 kWh 1269 kWh 423 kWh £292 £42 £335 £11,069 33.1 yrs £-4,373
3 kW 2539 kWh 1904 kWh 635 kWh £439 £63 £502 £13,104 26.1 yrs £-3,060
4 kW 3385 kWh 2539 kWh 846 kWh £585 £85 £670 £15,138 22.6 yrs £-1,746
5 kW 4232 kWh 3174 kWh 1058 kWh £731 £106 £837 £17,173 20.5 yrs £-433
6 kW 5078 kWh 3808 kWh 1269 kWh £877 £127 £1,004 £19,207 19.1 yrs £881
7 kW 5924 kWh 4443 kWh 1481 kWh £1,024 £148 £1,172 £21,242 18.1 yrs £2,194
8 kW 6770 kWh 5078 kWh 1693 kWh £1,170 £169 £1,339 £23,276 17.4 yrs £3,508

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: £848, Upfront: £19,623, Break-even: 23.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1693 kWh 1303 kWh 389 kWh £300 £39 £339 £13,519 39.9 yrs £-6,735
3 kW 2539 kWh 1955 kWh 584 kWh £450 £58 £509 £15,554 30.6 yrs £-5,377
4 kW 3385 kWh 2607 kWh 779 kWh £601 £78 £678 £17,588 25.9 yrs £-4,019
5 kW 4232 kWh 3258 kWh 973 kWh £751 £97 £848 £19,623 23.1 yrs £-2,662
6 kW 5078 kWh 3910 kWh 1168 kWh £901 £117 £1,018 £21,657 21.3 yrs £-1,304
7 kW 5924 kWh 4562 kWh 1363 kWh £1,051 £136 £1,187 £23,692 20.0 yrs £53
8 kW 6770 kWh 5213 kWh 1557 kWh £1,201 £156 £1,357 £25,726 19.0 yrs £1,411

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 LA23

Monthly generation per kilowatt of solar panels

kWh 24 Jan 41 Feb 71 Mar 104 Apr 115 May 109 Jun 108 Jul 96 Aug 77 Sep 49 Oct 32 Nov 20 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 39.8% 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 28 kWh per month; the average month produces around 71 kWh. So a typical 4 kW home system would generate roughly 112 kWh in winter, or 282 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.04p/kWh
Daily Fixed Charge
46.92p/day
Local Sunshine
846kWh/kW
A 1 kW system generates ~846 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: 54% • Flats: 31% • Bungalows: 12% Based on 3,240 properties

Coverage

Westmorland and Furness (100%)

Areas Covered

Windermere and Ambleside, Bowness and Lyth, Grange and Cartmel, Upper Kent

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.