How Much Solar Does a Hull Roof Make in January? The PVGIS Figures, Month by Month
ElectriFusion Solutions · 15 October 2026
January is the month that decides whether a home battery in Hull earns its keep from the roof or from the tariff. Below is every month for a south-facing Hull roof, from the European Commission's PVGIS model, and what each one means for a 5 kWh and a 10 kWh battery.
A 4.85 kW array in Hull, every month
| Month | Output | Average per day |
|---|---|---|
| Jan | 172 kWh | 5.5 kWh |
| Feb | 255 kWh | 9.1 kWh |
| Mar | 424 kWh | 13.7 kWh |
| Apr | 543 kWh | 18.1 kWh |
| May | 612 kWh | 19.7 kWh |
| Jun | 562 kWh | 18.7 kWh |
| Jul | 595 kWh | 19.2 kWh |
| Aug | 531 kWh | 17.1 kWh |
| Sep | 447 kWh | 14.9 kWh |
| Oct | 311 kWh | 10.0 kWh |
| Nov | 212 kWh | 7.1 kWh |
| Dec | 165 kWh | 5.3 kWh |
PVGIS 5.2, SARAH2 radiation database, Hull town-centre coordinates, south-facing at 35°, 14% system losses, fetched 15 October 2026. Annual total 4,829 kWh (996 kWh per kW), about 1.6% more than Doncaster. Modelled averages, not a guarantee for any particular roof.
The best month here is May at 612 kWh (19.7 kWh a day) and the worst is Dec at 165 kWh (5.3 kWh a day), a ratio of 3.7 to one; that ratio, not the annual total, is what a battery has to live with.
For scale: PVGIS puts the in-plane irradiation on that roof at about 1,221 kWh per square metre a year, and the array converts it to 996 kWh per installed kilowatt; a Hull household with the regional average evening load would see the battery cycle fully on about 245 days a year on these figures.
What that means for the battery
Rule of thumb: a 5 kWh battery fills from the roof on a 10 kWh day, a 10 kWh battery on a 16 kWh day, once the house has used its daytime share. For Hull the first is true on average in Mar, Apr, May, Jun, Jul, Aug, Sep, Oct and the second in Apr, May, Jun, Jul, Aug.
From November to January the average is 6.0 kWh a day. A house that runs a fridge, a router, a kettle and some lighting through the day uses most of that as it arrives, so the battery sees a few hundred watt-hours of surplus, not five kilowatt-hours. That is not a fault with the battery or the panels; it is the latitude.
That something else is the grid
The grid fills the gap. A time-of-use tariff charges the battery overnight at the low rate and the house draws it down through the evening peak; from November to January that is where almost all of a Hull battery's saving comes from, and from May to August the roof does the filling instead. Both halves are rate gap times kilowatt-hours shifted.
One caution: do not add grid-charging savings on top of solar savings for the same day. A battery that charged overnight is already full when the morning surplus arrives, so the summer saving is one or the other.
So what size for a Hull home?
Measure the evening. The kilowatt-hours used between the panels switching off and bedtime are what the battery has to cover, and a smart meter's half-hourly export tells you in a week. In Hull a typical three-bedroom semi lands at 5 kWh; a larger house with an EV or a heat pump justifies 10 kWh, mostly for the overnight charging rather than the roof. The sizing and registration details are on our battery storage Hull page, and the panels themselves on solar panels in Hull.
Questions
Does a home battery work in winter in Hull?
It works, but from the tariff rather than the roof: PVGIS gives a 4.85 kW array in Hull about 6.0 kWh a day across November to January, most of which the house uses as it is generated. On a time-of-use tariff the battery charges overnight and runs the evening peak all winter.
Which months will a 5 kWh battery fill from solar in Hull?
On the PVGIS monthly averages, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, when the roof makes 10 kWh or more a day after daytime use. A 10 kWh battery fills from solar alone in Apr, May, Jun, Jul, Aug.