Independent solar numbers for your postcode using official UK data
Home Regions Guides Compare quotes Solar assistant
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag Roof Direction Penalty Winter Solar Reality Seasonal Solar Output

Solar panel cost in Cumberland (CA15)

See realistic solar installation costs, savings and payback for CA15 (Cumberland) 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
10.8 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£753
What you save every year
Profit Over 25 Years
£10,688
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 915 kWh/kW — 45 above 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 915 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)
915 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: £753, Upfront: £8,139, Break-even: 10.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1831 kWh 732 kWh 1099 kWh £191 £110 £301 £3,256 10.8 yrs £2,769
3 kW 2746 kWh 1099 kWh 1648 kWh £287 £165 £452 £4,883 10.8 yrs £4,154
4 kW 3662 kWh 1465 kWh 2197 kWh £383 £220 £602 £6,511 10.8 yrs £5,538
5 kW 4577 kWh 1831 kWh 2746 kWh £478 £275 £753 £8,139 10.8 yrs £6,923
6 kW 5493 kWh 2197 kWh 3296 kWh £574 £330 £904 £9,767 10.8 yrs £8,307
7 kW 6408 kWh 2563 kWh 3845 kWh £670 £385 £1,054 £11,394 10.8 yrs £9,692
8 kW 7324 kWh 2930 kWh 4394 kWh £765 £439 £1,205 £13,022 10.8 yrs £11,077

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: £901, Upfront: £10,239, Break-even: 11.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1831 kWh 1099 kWh 732 kWh £287 £73 £360 £5,356 14.9 yrs £1,850
3 kW 2746 kWh 1648 kWh 1099 kWh £431 £110 £540 £6,983 12.9 yrs £3,826
4 kW 3662 kWh 2197 kWh 1465 kWh £574 £146 £721 £8,611 11.9 yrs £5,801
5 kW 4577 kWh 2746 kWh 1831 kWh £718 £183 £901 £10,239 11.4 yrs £7,776
6 kW 5493 kWh 3296 kWh 2197 kWh £861 £220 £1,081 £11,867 11.0 yrs £9,751
7 kW 6408 kWh 3845 kWh 2563 kWh £1,005 £256 £1,261 £13,494 10.7 yrs £11,727
8 kW 7324 kWh 4394 kWh 2930 kWh £1,148 £293 £1,441 £15,122 10.5 yrs £13,702

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: £975, Upfront: £11,639, Break-even: 11.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1831 kWh 1282 kWh 549 kWh £335 £55 £390 £6,756 17.3 yrs £1,041
3 kW 2746 kWh 1923 kWh 824 kWh £502 £82 £585 £8,383 14.3 yrs £3,312
4 kW 3662 kWh 2563 kWh 1099 kWh £670 £110 £780 £10,011 12.8 yrs £5,582
5 kW 4577 kWh 3204 kWh 1373 kWh £837 £137 £975 £11,639 11.9 yrs £7,853
6 kW 5493 kWh 3845 kWh 1648 kWh £1,005 £165 £1,170 £13,267 11.3 yrs £10,123
7 kW 6408 kWh 4486 kWh 1923 kWh £1,172 £192 £1,364 £14,894 10.9 yrs £12,394
8 kW 7324 kWh 5127 kWh 2197 kWh £1,340 £220 £1,559 £16,522 10.6 yrs £14,665

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: £997, Upfront: £13,389, Break-even: 13.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1831 kWh 1337 kWh 494 kWh £349 £49 £399 £8,506 21.3 yrs £-532
3 kW 2746 kWh 2005 kWh 742 kWh £524 £74 £598 £10,133 16.9 yrs £1,828
4 kW 3662 kWh 2673 kWh 989 kWh £699 £99 £797 £11,761 14.7 yrs £4,187
5 kW 4577 kWh 3342 kWh 1236 kWh £873 £124 £997 £13,389 13.4 yrs £6,546
6 kW 5493 kWh 4010 kWh 1483 kWh £1,048 £148 £1,196 £15,017 12.6 yrs £8,905
7 kW 6408 kWh 4678 kWh 1730 kWh £1,222 £173 £1,395 £16,644 11.9 yrs £11,264
8 kW 7324 kWh 5346 kWh 1977 kWh £1,397 £198 £1,595 £18,272 11.5 yrs £13,623

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: £1,012, Upfront: £15,139, Break-even: 15.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1831 kWh 1373 kWh 458 kWh £359 £46 £405 £10,256 25.3 yrs £-2,164
3 kW 2746 kWh 2060 kWh 687 kWh £538 £69 £607 £11,883 19.6 yrs £255
4 kW 3662 kWh 2746 kWh 915 kWh £718 £92 £809 £13,511 16.7 yrs £2,673
5 kW 4577 kWh 3433 kWh 1144 kWh £897 £114 £1,012 £15,139 15.0 yrs £5,091
6 kW 5493 kWh 4120 kWh 1373 kWh £1,076 £137 £1,214 £16,767 13.8 yrs £7,509
7 kW 6408 kWh 4806 kWh 1602 kWh £1,256 £160 £1,416 £18,394 13.0 yrs £9,928
8 kW 7324 kWh 5493 kWh 1831 kWh £1,435 £183 £1,618 £20,022 12.4 yrs £12,346

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: £1,026, Upfront: £17,589, Break-even: 17.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1831 kWh 1410 kWh 421 kWh £368 £42 £411 £12,706 31.0 yrs £-4,495
3 kW 2746 kWh 2115 kWh 632 kWh £553 £63 £616 £14,333 23.3 yrs £-2,018
4 kW 3662 kWh 2820 kWh 842 kWh £737 £84 £821 £15,961 19.4 yrs £459
5 kW 4577 kWh 3525 kWh 1053 kWh £921 £105 £1,026 £17,589 17.1 yrs £2,937
6 kW 5493 kWh 4230 kWh 1263 kWh £1,105 £126 £1,232 £19,217 15.6 yrs £5,414
7 kW 6408 kWh 4934 kWh 1474 kWh £1,289 £147 £1,437 £20,844 14.5 yrs £7,891
8 kW 7324 kWh 5639 kWh 1685 kWh £1,474 £168 £1,642 £22,472 13.7 yrs £10,369

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 Cumberland

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.

Compare solar quotes before you sign

Check what MCS certification means

Understand DNO, G98 and G99 export limits

New quote check

Want a quote sanity check for CA15?

Share the first part of your postcode and a few basics. We’ll help you check whether system size, battery, export and paperwork assumptions look sensible before you commit to installer conversations.

This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

Request a quote sanity check →

Insights for CA15

Figures below are tailored to CA15 — click through for full league tables.

Big-Roof Britain Rank #980 of 2182
5.1 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #1778 of 2996
10.8 years (UK avg 10.8 years)
~£753 /yr • £8,139 upfront
Standing-Charge Drag Rank #1014 of 2996
23.1% (UK avg 26.6%) drag on savings
£174 fixed • ~£753 /yr value
Aspect Penalty View ranking →
East −20.3% West −21.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in CA15

Monthly generation per kilowatt of solar panels

kWh 26 Jan 47 Feb 78 Mar 111 Apr 125 May 119 Jun 117 Jul 102 Aug 80 Sep 53 Oct 35 Nov 22 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 41.7% 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 32 kWh per month; the average month produces around 76 kWh. So a typical 4 kW home system would generate roughly 127 kWh in winter, or 305 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.13p/kWh
Daily Fixed Charge
47.61p/day
Local Sunshine
915kWh/kW
A 1 kW system generates ~915 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: 73% • Flats: 12% • Bungalows: 15% Based on 4,717 properties

Coverage

Cumberland (100%)

Areas Covered

Maryport South, Maryport North, Dearham and Broughton, Aspatria, Seaton

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

CA14 (Cumberland)
≈8.5 km away
Local sunshine: ~903 kWh/kWp · -1% vs CA15
CA95 (Cumberland)
≈8.7 km away
Local sunshine: ~920 kWh/kWp · +1% vs CA15
CA13 (Cumberland)
≈9.5 km away
Local sunshine: ~812 kWh/kWp · -11% vs CA15
CA26 (Cumberland)
≈18.6 km away
Local sunshine: ~868 kWh/kWp · -5% vs CA15
CA28 (Cumberland)
≈19.3 km away
Local sunshine: ~920 kWh/kWp · +0% vs CA15
CA5 (Cumberland)
≈20.2 km away
Local sunshine: ~854 kWh/kWp · -7% vs CA15

Similar sunshine across the UK

LS28 (Leeds)
~916 kWh/kWp · +0% vs CA15
NE64 (Northumberland)
~915 kWh/kWp · -0% vs CA15
BD11 (Kirklees)
~915 kWh/kWp · -0% vs CA15