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Solar Panels in MK13 (Milton Keynes)

See if solar pays off for you in Milton Keynes — price, savings and payback in under a minute (official UK data).

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
12.8 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£798
What you save every year
Profit Over 25 Years
£9,769
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

In East Midlands, the current unit rate is 25.55p/kWh with a 49.09p/day standing charge. Your postcode’s south-facing sunshine yield is 984 kWh/kW — 15 above the regional median (968).

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 984 kWh per year on a south-facing roof. We value self-used electricity at 25.6p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.6p/kWh
Standing charge
49.1p/day
Sunshine yield (south)
984 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: £798, Upfront: £10,173, 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 1967 kWh 787 kWh 1180 kWh £201 £118 £319 £4,069 12.8 yrs £2,312
3 kW 2951 kWh 1180 kWh 1770 kWh £302 £177 £479 £6,104 12.8 yrs £3,468
4 kW 3934 kWh 1574 kWh 2360 kWh £402 £236 £638 £8,138 12.8 yrs £4,624
5 kW 4918 kWh 1967 kWh 2951 kWh £503 £295 £798 £10,173 12.8 yrs £5,780
6 kW 5901 kWh 2360 kWh 3541 kWh £603 £354 £957 £12,207 12.8 yrs £6,936
7 kW 6885 kWh 2754 kWh 4131 kWh £704 £413 £1,117 £14,242 12.8 yrs £8,092
8 kW 7868 kWh 3147 kWh 4721 kWh £804 £472 £1,276 £16,276 12.8 yrs £9,248

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: £951, Upfront: £12,273, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1967 kWh 1180 kWh 787 kWh £302 £79 £380 £6,169 16.2 yrs £1,436
3 kW 2951 kWh 1770 kWh 1180 kWh £452 £118 £570 £8,204 14.4 yrs £3,203
4 kW 3934 kWh 2360 kWh 1574 kWh £603 £157 £760 £10,238 13.5 yrs £4,971
5 kW 4918 kWh 2951 kWh 1967 kWh £754 £197 £951 £12,273 12.9 yrs £6,739
6 kW 5901 kWh 3541 kWh 2360 kWh £905 £236 £1,141 £14,307 12.5 yrs £8,507
7 kW 6885 kWh 4131 kWh 2754 kWh £1,055 £275 £1,331 £16,342 12.3 yrs £10,275
8 kW 7868 kWh 4721 kWh 3147 kWh £1,206 £315 £1,521 £18,376 12.1 yrs £12,043

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: £1,027, Upfront: £13,673, Break-even: 13.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1967 kWh 1377 kWh 590 kWh £352 £59 £411 £7,569 18.4 yrs £647
3 kW 2951 kWh 2065 kWh 885 kWh £528 £89 £616 £9,604 15.6 yrs £2,721
4 kW 3934 kWh 2754 kWh 1180 kWh £704 £118 £822 £11,638 14.2 yrs £4,795
5 kW 4918 kWh 3442 kWh 1475 kWh £880 £148 £1,027 £13,673 13.3 yrs £6,868
6 kW 5901 kWh 4131 kWh 1770 kWh £1,055 £177 £1,232 £15,707 12.7 yrs £8,942
7 kW 6885 kWh 4819 kWh 2065 kWh £1,231 £207 £1,438 £17,742 12.3 yrs £11,016
8 kW 7868 kWh 5508 kWh 2360 kWh £1,407 £236 £1,643 £19,776 12.0 yrs £13,090

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: £1,050, Upfront: £15,423, 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 1967 kWh 1436 kWh 531 kWh £367 £53 £420 £9,319 22.2 yrs £-919
3 kW 2951 kWh 2154 kWh 797 kWh £550 £80 £630 £11,354 18.0 yrs £1,246
4 kW 3934 kWh 2872 kWh 1062 kWh £734 £106 £840 £13,388 15.9 yrs £3,412
5 kW 4918 kWh 3590 kWh 1328 kWh £917 £133 £1,050 £15,423 14.7 yrs £5,577
6 kW 5901 kWh 4308 kWh 1593 kWh £1,101 £159 £1,260 £17,457 13.9 yrs £7,743
7 kW 6885 kWh 5026 kWh 1859 kWh £1,284 £186 £1,470 £19,492 13.3 yrs £9,908
8 kW 7868 kWh 5744 kWh 2124 kWh £1,468 £212 £1,680 £21,526 12.8 yrs £12,074

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: £1,065, Upfront: £17,173, Break-even: 16.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1967 kWh 1475 kWh 492 kWh £377 £49 £426 £11,069 26.0 yrs £-2,547
3 kW 2951 kWh 2213 kWh 738 kWh £565 £74 £639 £13,104 20.5 yrs £-320
4 kW 3934 kWh 2951 kWh 984 kWh £754 £98 £852 £15,138 17.8 yrs £1,907
5 kW 4918 kWh 3688 kWh 1229 kWh £942 £123 £1,065 £17,173 16.1 yrs £4,133
6 kW 5901 kWh 4426 kWh 1475 kWh £1,131 £148 £1,278 £19,207 15.0 yrs £6,360
7 kW 6885 kWh 5164 kWh 1721 kWh £1,319 £172 £1,491 £21,242 14.2 yrs £8,586
8 kW 7868 kWh 5901 kWh 1967 kWh £1,508 £197 £1,704 £23,276 13.7 yrs £10,813

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: £1,081, Upfront: £19,623, Break-even: 18.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1967 kWh 1515 kWh 452 kWh £387 £45 £432 £13,519 31.3 yrs £-4,874
3 kW 2951 kWh 2272 kWh 679 kWh £580 £68 £648 £15,554 24.0 yrs £-2,587
4 kW 3934 kWh 3029 kWh 905 kWh £774 £90 £864 £17,588 20.3 yrs £-299
5 kW 4918 kWh 3787 kWh 1131 kWh £967 £113 £1,081 £19,623 18.2 yrs £1,989
6 kW 5901 kWh 4544 kWh 1357 kWh £1,161 £136 £1,297 £21,657 16.7 yrs £4,277
7 kW 6885 kWh 5301 kWh 1583 kWh £1,354 £158 £1,513 £23,692 15.7 yrs £6,565
8 kW 7868 kWh 6059 kWh 1810 kWh £1,548 £181 £1,729 £25,726 14.9 yrs £8,852

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.

Insights for MK13

Figures below are tailored to MK13 — click through for full league tables.

Big-Roof Britain Rank #1471 of 2182
4.7 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1414 of 2997
11.1 years (UK avg 11.3 years)
~£912 /yr • £10,173 upfront
Standing-Charge Drag Rank #1338 of 2997
19.6% (UK avg 21.7%) drag on savings
£179 fixed • ~£912 /yr value

Your Area at a Glance

Your Electricity Rate
25.55p/kWh
Daily Fixed Charge
49.09p/day
Local Sunshine
984kWh/kW
A 1 kW system generates ~984 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: 77% • Flats: 13% • Bungalows: 8% Based on 4,514 properties

Coverage

Milton Keynes (100%)

Areas Covered

Bradwell, Stantonbury, Central Milton Keynes, Wolverton, Loughton & Shenley

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q4 2025

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.

Compare nearby areas

Nearby in East Midlands

MK98 (Milton Keynes)
≈1.8 km away
Local sunshine: ~982 kWh/kWp · -0% vs MK13
MK14 (Milton Keynes)
≈2.1 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK13
MK9 (Milton Keynes)
≈2.1 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK13
MK8 (Milton Keynes)
≈2.2 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK13
MK12 (Milton Keynes)
≈2.3 km away
Local sunshine: ~987 kWh/kWp · +0% vs MK13
MK77 (Milton Keynes)
≈2.5 km away
Local sunshine: ~990 kWh/kWp · +1% vs MK13

Similar sunshine across the UK

SA61 (Pembrokeshire)
~984 kWh/kWp · +0% vs MK13
PL29 (Cornwall)
~983 kWh/kWp · -0% vs MK13
OX39 (South Oxfordshire)
~984 kWh/kWp · +0% vs MK13