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Solar panel cost in Renfrewshire (PA7)

See realistic solar installation costs, savings and payback for PA7 (Renfrewshire) 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
11.8 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£828
What you save every year
Profit Over 25 Years
£10,943
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 Southern Scotland, the current unit rate is 25.85p/kWh with a 64.17p/day standing charge. Your postcode’s south-facing sunshine yield is 845 kWh/kW — 5 below the regional median (850).

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 845 kWh per year on a south-facing roof. We value self-used electricity at 25.9p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.9p/kWh
Standing charge
64.2p/day
Sunshine yield (south)
845 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: £690, Upfront: £8,139, Break-even: 11.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1690 kWh 676 kWh 1014 kWh £175 £101 £276 £3,256 11.8 yrs £2,267
3 kW 2535 kWh 1014 kWh 1521 kWh £262 £152 £414 £4,883 11.8 yrs £3,401
4 kW 3380 kWh 1352 kWh 2028 kWh £349 £203 £552 £6,511 11.8 yrs £4,534
5 kW 4225 kWh 1690 kWh 2535 kWh £437 £253 £690 £8,139 11.8 yrs £5,668
6 kW 5070 kWh 2028 kWh 3042 kWh £524 £304 £828 £9,767 11.8 yrs £6,801
7 kW 5915 kWh 2366 kWh 3549 kWh £612 £355 £966 £11,394 11.8 yrs £7,935
8 kW 6760 kWh 2704 kWh 4056 kWh £699 £406 £1,105 £13,022 11.8 yrs £9,068

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: £824, Upfront: £10,239, Break-even: 12.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1690 kWh 1014 kWh 676 kWh £262 £68 £330 £5,356 16.2 yrs £1,238
3 kW 2535 kWh 1521 kWh 1014 kWh £393 £101 £495 £6,983 14.1 yrs £2,908
4 kW 3380 kWh 2028 kWh 1352 kWh £524 £135 £659 £8,611 13.1 yrs £4,577
5 kW 4225 kWh 2535 kWh 1690 kWh £655 £169 £824 £10,239 12.4 yrs £6,246
6 kW 5070 kWh 3042 kWh 2028 kWh £786 £203 £989 £11,867 12.0 yrs £7,915
7 kW 5915 kWh 3549 kWh 2366 kWh £917 £237 £1,154 £13,494 11.7 yrs £9,584
8 kW 6760 kWh 4056 kWh 2704 kWh £1,048 £270 £1,319 £15,122 11.5 yrs £11,254

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: £891, Upfront: £11,639, Break-even: 13.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1690 kWh 1183 kWh 507 kWh £306 £51 £356 £6,756 19.0 yrs £374
3 kW 2535 kWh 1774 kWh 760 kWh £459 £76 £535 £8,383 15.7 yrs £2,311
4 kW 3380 kWh 2366 kWh 1014 kWh £612 £101 £713 £10,011 14.0 yrs £4,248
5 kW 4225 kWh 2957 kWh 1267 kWh £764 £127 £891 £11,639 13.1 yrs £6,185
6 kW 5070 kWh 3549 kWh 1521 kWh £917 £152 £1,069 £13,267 12.4 yrs £8,122
7 kW 5915 kWh 4140 kWh 1774 kWh £1,070 £177 £1,248 £14,894 11.9 yrs £10,059
8 kW 6760 kWh 4732 kWh 2028 kWh £1,223 £203 £1,426 £16,522 11.6 yrs £11,996

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: £911, Upfront: £13,389, 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 1690 kWh 1234 kWh 456 kWh £319 £46 £365 £8,506 23.3 yrs £-1,215
3 kW 2535 kWh 1850 kWh 684 kWh £478 £68 £547 £10,133 18.5 yrs £802
4 kW 3380 kWh 2467 kWh 913 kWh £638 £91 £729 £11,761 16.1 yrs £2,820
5 kW 4225 kWh 3084 kWh 1141 kWh £797 £114 £911 £13,389 14.7 yrs £4,837
6 kW 5070 kWh 3701 kWh 1369 kWh £957 £137 £1,094 £15,017 13.7 yrs £6,854
7 kW 5915 kWh 4318 kWh 1597 kWh £1,116 £160 £1,276 £16,644 13.0 yrs £8,872
8 kW 6760 kWh 4934 kWh 1825 kWh £1,276 £183 £1,458 £18,272 12.5 yrs £10,889

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: £925, Upfront: £15,139, Break-even: 16.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1690 kWh 1267 kWh 422 kWh £328 £42 £370 £10,256 27.7 yrs £-2,858
3 kW 2535 kWh 1901 kWh 634 kWh £491 £63 £555 £11,883 21.4 yrs £-787
4 kW 3380 kWh 2535 kWh 845 kWh £655 £84 £740 £13,511 18.3 yrs £1,284
5 kW 4225 kWh 3169 kWh 1056 kWh £819 £106 £925 £15,139 16.4 yrs £3,355
6 kW 5070 kWh 3802 kWh 1267 kWh £983 £127 £1,110 £16,767 15.1 yrs £5,426
7 kW 5915 kWh 4436 kWh 1479 kWh £1,147 £148 £1,295 £18,394 14.2 yrs £7,497
8 kW 6760 kWh 5070 kWh 1690 kWh £1,311 £169 £1,479 £20,022 13.5 yrs £9,568

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: £938, Upfront: £17,589, 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 1690 kWh 1301 kWh 389 kWh £336 £39 £375 £12,706 33.9 yrs £-5,201
3 kW 2535 kWh 1952 kWh 583 kWh £505 £58 £563 £14,333 25.5 yrs £-3,076
4 kW 3380 kWh 2602 kWh 777 kWh £673 £78 £750 £15,961 21.3 yrs £-952
5 kW 4225 kWh 3253 kWh 972 kWh £841 £97 £938 £17,589 18.7 yrs £1,173
6 kW 5070 kWh 3904 kWh 1166 kWh £1,009 £117 £1,126 £19,217 17.1 yrs £3,297
7 kW 5915 kWh 4554 kWh 1360 kWh £1,177 £136 £1,313 £20,844 15.9 yrs £5,422
8 kW 6760 kWh 5205 kWh 1555 kWh £1,345 £155 £1,501 £22,472 15.0 yrs £7,546

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 Renfrewshire

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 PA7

Figures below are tailored to PA7 — click through for full league tables.

Solar Payback Index Rank #2416 of 2996
11.8 years (UK avg 10.8 years)
~£828 /yr • £9,767 upfront
Standing-Charge Drag Rank #1911 of 2996
28.3% (UK avg 26.6%) drag on savings
£234 fixed • ~£828 /yr value
Aspect Penalty View ranking →
East −19.1% West −21.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PA7

Monthly generation per kilowatt of solar panels

kWh 23 Jan 40 Feb 70 Mar 103 Apr 116 May 110 Jun 111 Jul 98 Aug 74 Sep 50 Oct 32 Nov 18 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 38.4% 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 27 kWh per month; the average month produces around 70 kWh. So a typical 4 kW home system would generate roughly 108 kWh in winter, or 282 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
845kWh/kW
A 1 kW system generates ~845 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

No EPC data available for this outcode

Coverage

Renfrewshire (100%)

Areas Covered

Bishopton, Bridge of Weir and Langbank, Erskine and Inchinnan

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 Southern Scotland

PA8 (Renfrewshire)
≈3.1 km away
Local sunshine: ~846 kWh/kWp · +0% vs PA7
G60 (West Dunbartonshire)
≈3.7 km away
Local sunshine: ~847 kWh/kWp · +0% vs PA7
PA6 (Renfrewshire)
≈5.2 km away
Local sunshine: ~832 kWh/kWp · -2% vs PA7
G82 (West Dunbartonshire)
≈6.2 km away
Local sunshine: ~836 kWh/kWp · -1% vs PA7
G81 (West Dunbartonshire)
≈6.2 km away
Local sunshine: ~835 kWh/kWp · -1% vs PA7
PA98 (Renfrewshire)
≈6.8 km away
Local sunshine: ~843 kWh/kWp · -0% vs PA7

Similar sunshine across the UK

OL7 (Tameside)
~845 kWh/kWp · +0% vs PA7
M34 (Tameside)
~845 kWh/kWp · -0% vs PA7
M43 (Tameside)
~845 kWh/kWp · -0% vs PA7