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Solar Panels in MK98 (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
£796
What you save every year
Profit Over 25 Years
£9,740
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 982 kWh/kW — 14 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 982 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)
982 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: £796, 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 1964 kWh 786 kWh 1179 kWh £201 £118 £319 £4,069 12.8 yrs £2,303
3 kW 2946 kWh 1179 kWh 1768 kWh £301 £177 £478 £6,104 12.8 yrs £3,454
4 kW 3928 kWh 1571 kWh 2357 kWh £401 £236 £637 £8,138 12.8 yrs £4,606
5 kW 4910 kWh 1964 kWh 2946 kWh £502 £295 £796 £10,173 12.8 yrs £5,757
6 kW 5893 kWh 2357 kWh 3536 kWh £602 £354 £956 £12,207 12.8 yrs £6,909
7 kW 6875 kWh 2750 kWh 4125 kWh £703 £412 £1,115 £14,242 12.8 yrs £8,060
8 kW 7857 kWh 3143 kWh 4714 kWh £803 £471 £1,274 £16,276 12.8 yrs £9,211

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: £949, 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 1964 kWh 1179 kWh 786 kWh £301 £79 £380 £6,169 16.2 yrs £1,425
3 kW 2946 kWh 1768 kWh 1179 kWh £452 £118 £570 £8,204 14.4 yrs £3,187
4 kW 3928 kWh 2357 kWh 1571 kWh £602 £157 £759 £10,238 13.5 yrs £4,949
5 kW 4910 kWh 2946 kWh 1964 kWh £753 £196 £949 £12,273 12.9 yrs £6,711
6 kW 5893 kWh 3536 kWh 2357 kWh £903 £236 £1,139 £14,307 12.6 yrs £8,474
7 kW 6875 kWh 4125 kWh 2750 kWh £1,054 £275 £1,329 £16,342 12.3 yrs £10,236
8 kW 7857 kWh 4714 kWh 3143 kWh £1,204 £314 £1,519 £18,376 12.1 yrs £11,998

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: £1,026, 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 1964 kWh 1375 kWh 589 kWh £351 £59 £410 £7,569 18.5 yrs £635
3 kW 2946 kWh 2062 kWh 884 kWh £527 £88 £615 £9,604 15.6 yrs £2,703
4 kW 3928 kWh 2750 kWh 1179 kWh £703 £118 £820 £11,638 14.2 yrs £4,771
5 kW 4910 kWh 3437 kWh 1473 kWh £878 £147 £1,026 £13,673 13.3 yrs £6,839
6 kW 5893 kWh 4125 kWh 1768 kWh £1,054 £177 £1,231 £15,707 12.8 yrs £8,906
7 kW 6875 kWh 4812 kWh 2062 kWh £1,230 £206 £1,436 £17,742 12.4 yrs £10,974
8 kW 7857 kWh 5500 kWh 2357 kWh £1,405 £236 £1,641 £19,776 12.1 yrs £13,042

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: £1,048, 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 1964 kWh 1434 kWh 530 kWh £366 £53 £419 £9,319 22.2 yrs £-931
3 kW 2946 kWh 2151 kWh 796 kWh £550 £80 £629 £11,354 18.0 yrs £1,228
4 kW 3928 kWh 2868 kWh 1061 kWh £733 £106 £839 £13,388 16.0 yrs £3,387
5 kW 4910 kWh 3585 kWh 1326 kWh £916 £133 £1,048 £15,423 14.7 yrs £5,547
6 kW 5893 kWh 4302 kWh 1591 kWh £1,099 £159 £1,258 £17,457 13.9 yrs £7,706
7 kW 6875 kWh 5019 kWh 1856 kWh £1,282 £186 £1,468 £19,492 13.3 yrs £9,865
8 kW 7857 kWh 5735 kWh 2121 kWh £1,465 £212 £1,678 £21,526 12.8 yrs £12,025

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: £1,064, 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 1964 kWh 1473 kWh 491 kWh £376 £49 £425 £11,069 26.0 yrs £-2,559
3 kW 2946 kWh 2210 kWh 737 kWh £565 £74 £638 £13,104 20.5 yrs £-339
4 kW 3928 kWh 2946 kWh 982 kWh £753 £98 £851 £15,138 17.8 yrs £1,882
5 kW 4910 kWh 3683 kWh 1228 kWh £941 £123 £1,064 £17,173 16.1 yrs £4,102
6 kW 5893 kWh 4419 kWh 1473 kWh £1,129 £147 £1,276 £19,207 15.0 yrs £6,323
7 kW 6875 kWh 5156 kWh 1719 kWh £1,317 £172 £1,489 £21,242 14.3 yrs £8,543
8 kW 7857 kWh 5893 kWh 1964 kWh £1,506 £196 £1,702 £23,276 13.7 yrs £10,764

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: £1,079, 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 1964 kWh 1512 kWh 452 kWh £386 £45 £432 £13,519 31.3 yrs £-4,887
3 kW 2946 kWh 2269 kWh 678 kWh £580 £68 £647 £15,554 24.0 yrs £-2,605
4 kW 3928 kWh 3025 kWh 904 kWh £773 £90 £863 £17,588 20.4 yrs £-324
5 kW 4910 kWh 3781 kWh 1129 kWh £966 £113 £1,079 £19,623 18.2 yrs £1,958
6 kW 5893 kWh 4537 kWh 1355 kWh £1,159 £136 £1,295 £21,657 16.7 yrs £4,239
7 kW 6875 kWh 5294 kWh 1581 kWh £1,352 £158 £1,511 £23,692 15.7 yrs £6,521
8 kW 7857 kWh 6050 kWh 1807 kWh £1,546 £181 £1,726 £25,726 14.9 yrs £8,802

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 MK98

Figures below are tailored to MK98 — click through for full league tables.

Solar Payback Index Rank #1550 of 2997
11.2 years (UK avg 11.3 years)
~£911 /yr • £10,173 upfront
Standing-Charge Drag Rank #1348 of 2997
19.7% (UK avg 21.7%) drag on savings
£179 fixed • ~£911 /yr value

Your Area at a Glance

Your Electricity Rate
25.55p/kWh
Daily Fixed Charge
49.09p/day
Local Sunshine
982kWh/kW
A 1 kW system generates ~982 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

No EPC data available for this outcode

Coverage

Milton Keynes (100%)

Areas Covered

Stantonbury

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

MK14 (Milton Keynes)
≈0.3 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK98
MK9 (Milton Keynes)
≈1.7 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK98
MK13 (Milton Keynes)
≈1.8 km away
Local sunshine: ~984 kWh/kWp · +0% vs MK98
MK15 (Milton Keynes)
≈2.2 km away
Local sunshine: ~978 kWh/kWp · -0% vs MK98
MK6 (Milton Keynes)
≈3.0 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK98
MK8 (Milton Keynes)
≈3.9 km away
Local sunshine: ~985 kWh/kWp · +0% vs MK98

Similar sunshine across the UK

HP19 (Buckinghamshire)
~982 kWh/kWp · +0% vs MK98
HP20 (Buckinghamshire)
~982 kWh/kWp · +0% vs MK98
OX9 (South Oxfordshire)
~982 kWh/kWp · -0% vs MK98