Off-grid solar sizing in United Kingdom
What a year-round off-grid system costs you in 88 cities, sized against the worst month rather than the annual average.
| City | Annual per kW | Worst month | Array for 3 kWh/day | Seasonal swing |
|---|---|---|---|---|
| London | 1,023 kWh | December | 3.30 kW | 3.2× |
| Birmingham | 971 kWh | December | 3.59 kW | 3.4× |
| Glasgow | 854 kWh | December | 6.29 kW | 5.7× |
| Manchester | 888 kWh | January | 4.50 kW | 4.0× |
| Sheffield | 948 kWh | December | 3.99 kW | 3.7× |
| Leeds | 956 kWh | December | 3.64 kW | 3.3× |
| Edinburgh | 905 kWh | December | 5.30 kW | 4.9× |
| Liverpool | 968 kWh | December | 4.21 kW | 4.1× |
| Bristol | 1,025 kWh | December | 3.56 kW | 3.5× |
| Cardiff | 1,044 kWh | December | 3.74 kW | 3.9× |
| Leicester | 984 kWh | December | 3.47 kW | 3.2× |
| Bradford | 938 kWh | December | 3.90 kW | 3.6× |
| Belfast | 922 kWh | December | 4.46 kW | 4.2× |
| Coventry | 990 kWh | December | 3.60 kW | 3.4× |
| Nottingham | 974 kWh | December | 3.59 kW | 3.3× |
| Reading | 1,024 kWh | December | 3.43 kW | 3.4× |
| Kingston upon Hull | 996 kWh | December | 3.53 kW | 3.4× |
| Preston | 923 kWh | December | 4.51 kW | 4.2× |
| Swansea | 1,016 kWh | December | 3.72 kW | 3.8× |
| Newcastle upon Tyne | 956 kWh | December | 3.99 kW | 3.7× |
| Southend-on-Sea | 1,092 kWh | December | 3.16 kW | 3.3× |
| Brighton | 1,159 kWh | December | 3.06 kW | 3.5× |
| Derby | 978 kWh | December | 3.56 kW | 3.3× |
| Southampton | 1,066 kWh | December | 3.32 kW | 3.4× |
| Wolverhampton | 959 kWh | December | 3.60 kW | 3.3× |
| Plymouth | 1,123 kWh | December | 3.36 kW | 3.7× |
| Stoke-on-Trent | 927 kWh | December | 4.23 kW | 3.9× |
| Milton Keynes | 1,018 kWh | December | 3.53 kW | 3.5× |
| Northampton | 1,025 kWh | December | 3.40 kW | 3.3× |
| Bexley | 1,054 kWh | December | 3.29 kW | 3.4× |
| Luton | 1,027 kWh | December | 3.47 kW | 3.4× |
| Portsmouth | 1,122 kWh | December | 3.20 kW | 3.6× |
| Swindon | 1,023 kWh | December | 3.47 kW | 3.4× |
| Aberdeen | 897 kWh | December | 5.57 kW | 5.3× |
| Sutton | 1,026 kWh | December | 3.50 kW | 3.5× |
| St Helens | 940 kWh | December | 4.41 kW | 4.2× |
| Ipswich | 1,088 kWh | December | 3.19 kW | 3.3× |
| Wigan | 929 kWh | December | 4.49 kW | 4.2× |
| Mansfield | 972 kWh | December | 3.87 kW | 3.6× |
| Sunderland | 948 kWh | December | 3.88 kW | 3.6× |
| Ilford | 1,046 kWh | December | 3.25 kW | 3.3× |
| Slough | 1,034 kWh | December | 3.36 kW | 3.4× |
| Bournemouth | 1,125 kWh | December | 3.29 kW | 3.6× |
| Peterborough | 1,041 kWh | December | 3.24 kW | 3.1× |
| Oxford | 1,021 kWh | December | 3.47 kW | 3.4× |
| Newport | 1,034 kWh | December | 3.74 kW | 3.9× |
| Enfield Town | 1,024 kWh | December | 3.36 kW | 3.3× |
| York | 974 kWh | December | 3.77 kW | 3.6× |
| Telford | 973 kWh | December | 3.85 kW | 3.7× |
| Burnley | 874 kWh | December | 5.52 kW | 5.0× |
| Harrow | 1,023 kWh | December | 3.52 kW | 3.5× |
| Huddersfield | 938 kWh | December | 4.10 kW | 3.8× |
| Dundee | 945 kWh | December | 5.32 kW | 5.2× |
| Blackburn | 883 kWh | December | 5.25 kW | 4.8× |
| Cambridge | 1,046 kWh | December | 3.26 kW | 3.2× |
| Blackpool | 1,035 kWh | December | 4.19 kW | 4.5× |
| Basildon | 1,076 kWh | December | 3.21 kW | 3.3× |
| Norwich | 1,036 kWh | December | 3.46 kW | 3.4× |
| Middlesbrough | 954 kWh | December | 3.98 kW | 3.7× |
| Bolton | 897 kWh | December | 4.69 kW | 4.3× |
| High Wycombe | 1,016 kWh | December | 3.54 kW | 3.5× |
| Gloucester | 1,001 kWh | December | 3.81 kW | 3.7× |
| Exeter | 1,054 kWh | December | 3.43 kW | 3.4× |
| Colchester | 1,100 kWh | December | 3.14 kW | 3.3× |
| Saint Peters | 1,123 kWh | December | 3.32 kW | 3.7× |
| Crawley | 1,039 kWh | December | 3.39 kW | 3.5× |
| Burton upon Trent | 969 kWh | December | 3.70 kW | 3.4× |
| Worthing | 1,158 kWh | December | 3.09 kW | 3.6× |
| Doncaster | 980 kWh | December | 3.50 kW | 3.3× |
| Chesterfield | 964 kWh | December | 4.00 kW | 3.7× |
| Chelmsford | 1,070 kWh | December | 3.21 kW | 3.3× |
| Wakefield | 967 kWh | December | 3.73 kW | 3.5× |
| Basingstoke | 1,040 kWh | December | 3.46 kW | 3.5× |
| Maidstone | 1,059 kWh | December | 3.30 kW | 3.4× |
| Bedford | 1,035 kWh | December | 3.30 kW | 3.2× |
| Woking | 1,030 kWh | December | 3.46 kW | 3.5× |
| Lincoln | 1,020 kWh | December | 3.43 kW | 3.3× |
| Eastbourne | 1,175 kWh | December | 3.10 kW | 3.7× |
| Worcester | 1,003 kWh | December | 3.63 kW | 3.5× |
| Bath | 1,014 kWh | December | 3.77 kW | 3.7× |
| Gillingham | 1,054 kWh | December | 3.28 kW | 3.3× |
| Rochdale | 868 kWh | December | 5.06 kW | 4.5× |
| Hemel Hempstead | 1,026 kWh | December | 3.46 kW | 3.4× |
| Harlow | 1,048 kWh | December | 3.36 kW | 3.4× |
| Hastings | 1,164 kWh | December | 3.06 kW | 3.6× |
| High Peak | 912 kWh | December | 5.15 kW | 4.8× |
| Darlington | 943 kWh | December | 4.13 kW | 3.8× |
| Stevenage | 1,027 kWh | December | 3.44 kW | 3.4× |
Panel angles matter as much as panel count. Solar panel angles in United Kingdom →