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Solar panel cost in Westmorland and Furness (LA21)

See realistic solar installation costs, savings and payback for LA21 (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
12.2 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£666
What you save every year
Profit Over 25 Years
£8,521
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 North West, the current unit rate is 26.13p/kWh with a 47.61p/day standing charge. Your postcode’s south-facing sunshine yield is 810 kWh/kW — 60 below the regional median (870).

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 810 kWh per year on a south-facing roof. We value self-used electricity at 26.1p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.1p/kWh
Standing charge
47.6p/day
Sunshine yield (south)
810 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: £666, Upfront: £8,139, 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 1620 kWh 648 kWh 972 kWh £169 £97 £267 £3,256 12.2 yrs £2,076
3 kW 2430 kWh 972 kWh 1458 kWh £254 £146 £400 £4,883 12.2 yrs £3,113
4 kW 3240 kWh 1296 kWh 1944 kWh £339 £194 £533 £6,511 12.2 yrs £4,151
5 kW 4051 kWh 1620 kWh 2430 kWh £423 £243 £666 £8,139 12.2 yrs £5,189
6 kW 4861 kWh 1944 kWh 2916 kWh £508 £292 £800 £9,767 12.2 yrs £6,227
7 kW 5671 kWh 2268 kWh 3402 kWh £593 £340 £933 £11,394 12.2 yrs £7,265
8 kW 6481 kWh 2592 kWh 3889 kWh £677 £389 £1,066 £13,022 12.2 yrs £8,303

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: £797, Upfront: £10,239, Break-even: 12.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1620 kWh 972 kWh 648 kWh £254 £65 £319 £5,356 16.8 yrs £1,021
3 kW 2430 kWh 1458 kWh 972 kWh £381 £97 £478 £6,983 14.6 yrs £2,582
4 kW 3240 kWh 1944 kWh 1296 kWh £508 £130 £638 £8,611 13.5 yrs £4,142
5 kW 4051 kWh 2430 kWh 1620 kWh £635 £162 £797 £10,239 12.8 yrs £5,703
6 kW 4861 kWh 2916 kWh 1944 kWh £762 £194 £956 £11,867 12.4 yrs £7,263
7 kW 5671 kWh 3402 kWh 2268 kWh £889 £227 £1,116 £13,494 12.1 yrs £8,824
8 kW 6481 kWh 3889 kWh 2592 kWh £1,016 £259 £1,275 £15,122 11.9 yrs £10,384

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: £862, Upfront: £11,639, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1620 kWh 1134 kWh 486 kWh £296 £49 £345 £6,756 19.6 yrs £144
3 kW 2430 kWh 1701 kWh 729 kWh £445 £73 £517 £8,383 16.2 yrs £1,966
4 kW 3240 kWh 2268 kWh 972 kWh £593 £97 £690 £10,011 14.5 yrs £3,787
5 kW 4051 kWh 2835 kWh 1215 kWh £741 £122 £862 £11,639 13.5 yrs £5,609
6 kW 4861 kWh 3402 kWh 1458 kWh £889 £146 £1,035 £13,267 12.8 yrs £7,431
7 kW 5671 kWh 3970 kWh 1701 kWh £1,037 £170 £1,207 £14,894 12.3 yrs £9,253
8 kW 6481 kWh 4537 kWh 1944 kWh £1,185 £194 £1,380 £16,522 12.0 yrs £11,075

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: £882, Upfront: £13,389, 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 1620 kWh 1183 kWh 437 kWh £309 £44 £353 £8,506 24.1 yrs £-1,449
3 kW 2430 kWh 1774 kWh 656 kWh £464 £66 £529 £10,133 19.1 yrs £451
4 kW 3240 kWh 2366 kWh 875 kWh £618 £87 £706 £11,761 16.7 yrs £2,351
5 kW 4051 kWh 2957 kWh 1094 kWh £773 £109 £882 £13,389 15.2 yrs £4,251
6 kW 4861 kWh 3548 kWh 1312 kWh £927 £131 £1,058 £15,017 14.2 yrs £6,152
7 kW 5671 kWh 4140 kWh 1531 kWh £1,082 £153 £1,235 £16,644 13.5 yrs £8,052
8 kW 6481 kWh 4731 kWh 1750 kWh £1,236 £175 £1,411 £18,272 12.9 yrs £9,952

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: £895, Upfront: £15,139, 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 1620 kWh 1215 kWh 405 kWh £318 £41 £358 £10,256 28.6 yrs £-3,095
3 kW 2430 kWh 1823 kWh 608 kWh £476 £61 £537 £11,883 22.1 yrs £-1,142
4 kW 3240 kWh 2430 kWh 810 kWh £635 £81 £716 £13,511 18.9 yrs £810
5 kW 4051 kWh 3038 kWh 1013 kWh £794 £101 £895 £15,139 16.9 yrs £2,763
6 kW 4861 kWh 3645 kWh 1215 kWh £953 £122 £1,074 £16,767 15.6 yrs £4,715
7 kW 5671 kWh 4253 kWh 1418 kWh £1,111 £142 £1,253 £18,394 14.7 yrs £6,668
8 kW 6481 kWh 4861 kWh 1620 kWh £1,270 £162 £1,432 £20,022 14.0 yrs £8,620

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: £908, Upfront: £17,589, Break-even: 19.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1620 kWh 1248 kWh 373 kWh £326 £37 £363 £12,706 35.0 yrs £-5,440
3 kW 2430 kWh 1871 kWh 559 kWh £489 £56 £545 £14,333 26.3 yrs £-3,436
4 kW 3240 kWh 2495 kWh 745 kWh £652 £75 £727 £15,961 22.0 yrs £-1,431
5 kW 4051 kWh 3119 kWh 932 kWh £815 £93 £908 £17,589 19.4 yrs £574
6 kW 4861 kWh 3743 kWh 1118 kWh £978 £112 £1,090 £19,217 17.6 yrs £2,579
7 kW 5671 kWh 4366 kWh 1304 kWh £1,141 £130 £1,271 £20,844 16.4 yrs £4,584
8 kW 6481 kWh 4990 kWh 1491 kWh £1,304 £149 £1,453 £22,472 15.5 yrs £6,588

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 Westmorland and Furness

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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Insights for LA21

Figures below are tailored to LA21 — click through for full league tables.

Big-Roof Britain Rank #880 of 2182
5.2 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #2606 of 2996
12.2 years (UK avg 10.8 years)
~£666 /yr • £8,139 upfront
Standing-Charge Drag Rank #1625 of 2996
26.1% (UK avg 26.6%) drag on savings
£174 fixed • ~£666 /yr value
Aspect Penalty View ranking →
East −17.1% West −22.1%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in LA21

Monthly generation per kilowatt of solar panels

kWh 21 Jan 38 Feb 68 Mar 100 Apr 114 May 107 Jun 106 Jul 93 Aug 73 Sep 44 Oct 27 Nov 17 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 37.8% 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 25 kWh per month; the average month produces around 68 kWh. So a typical 4 kW home system would generate roughly 102 kWh in winter, or 270 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.13p/kWh
Daily Fixed Charge
47.61p/day
Local Sunshine
810kWh/kW
A 1 kW system generates ~810 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: 59% • Flats: 17% • Bungalows: 24% Based on 468 properties

Coverage

Westmorland and Furness (100%)

Areas Covered

Coniston and Hawkshead, Windermere and Ambleside

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 North West

LA22 (Westmorland and Furness)
≈9.6 km away
Local sunshine: ~836 kWh/kWp · +3% vs LA21
LA23 (Westmorland and Furness)
≈10.7 km away
Local sunshine: ~846 kWh/kWp · +4% vs LA21
LA20 (Westmorland and Furness)
≈13.3 km away
Local sunshine: ~912 kWh/kWp · +13% vs LA21
LA17 (Westmorland and Furness)
≈15.9 km away
Local sunshine: ~957 kWh/kWp · +18% vs LA21
LA12 (Westmorland and Furness)
≈19.3 km away
Local sunshine: ~948 kWh/kWp · +17% vs LA21
LA8 (Westmorland and Furness)
≈20.3 km away
Local sunshine: ~874 kWh/kWp · +8% vs LA21

Similar sunshine across the UK

IV9 (Highland)
~810 kWh/kWp · -0% vs LA21
ML7 (North Lanarkshire)
~810 kWh/kWp · +0% vs LA21
EH45 (Scottish Borders)
~810 kWh/kWp · -0% vs LA21