Battery Storage in Castleford
Battery storage for homes in Castleford (WF10), installed by our own MCS-certified engineers from Doncaster. New solar plus battery, a retrofit battery, or a standalone unit charged from the grid: the right size depends on Castleford's monthly solar figures and your evening usage, not on a brochure number, so those figures come first.
PVGIS puts a south-facing Castleford roof at 962 kWh a year per kW of panels, about 1.9% less than Doncaster. A 4.85 kW array makes about 4,665 kWh a year here, 0.6% more than Wakefield. What that means for a 5 or 10 kWh battery, how the connection is registered with Northern Powergrid, and what Wakefield Council does and does not restrict are covered below.
How much a Castleford roof can store
PVGIS 5.2 (the EU Joint Research Centre's model, SARAH2 radiation record, south-facing at 35°, 14% losses, fetched 15 October 2026) gives a 4.85 kW array in Castleford these monthly totals:
| Month | Array output (4.85 kW) | Average per day |
|---|---|---|
| Jan | 162 kWh | 5.2 kWh |
| Mar | 408 kWh | 13.2 kWh |
| May | 588 kWh | 19.0 kWh |
| Jun | 542 kWh | 18.1 kWh |
| Jul | 574 kWh | 18.5 kWh |
| Sep | 429 kWh | 14.3 kWh |
| Nov | 207 kWh | 6.9 kWh |
| Dec | 157 kWh | 5.1 kWh |
The Castleford figure to design around is the gap between 18.1 kWh a day across May to August and 5.7 kWh a day across November to January. A 5 kWh battery fills from the roof on ordinary summer days; in the three darkest months it fills only if a cheap overnight tariff does the charging.
The full twelve months, with what they mean for a 5 kWh and a 10 kWh battery, are in Castleford solar output month by month.
Registering the battery with Northern Powergrid
Northern Powergrid is the network operator for Castleford, so the battery is registered with it. What you register depends on the total inverter output at the property, including any existing solar inverter. Up to 16 A per phase in total, 3.68 kW on a single-phase supply, is a G98 notification after installation. Above that, for example a 5 kW hybrid battery inverter on a single-phase supply, a G99 application has to be approved before the system is switched on. We submit whichever applies, and it is on the quote.
Batteries on their own, and charging from the grid
A battery without panels can make sense in Castleford where a roof is shaded, north-facing or not yours to change. HMRC's VAT Notice 708/6 zero-rates a battery supplied and installed in a home until 31 March 2027, and that expressly includes a standalone battery that stores electricity from the grid. It earns its keep by filling in the cheap overnight window of a time-of-use tariff and discharging into the evening peak; the saving is the gap between the two rates, multiplied by what the battery can shift each day.
If you also have panels, do not add grid-charging savings on top of solar savings for the same days: a battery filled from the grid overnight is already full when the morning's solar surplus arrives. Our battery storage page sets out the models we fit and their usable capacities.
Choosing a battery in Castleford
The roof is rarely what limits a Castleford battery; the evening is. How much electricity the house uses between the panels switching off and bedtime decides whether 5 kWh or 10 kWh pays, and a smart meter's half-hourly data answers it in a week. If you are adding a battery to panels you already have, count the existing solar inverter towards the G98 limit above.
Panels and battery together are priced on our solar panels in Castleford page; the battery models are on battery storage: how it works.
Renting, planning and Wakefield Council
A wall-mounted battery inside the house, in a garage or in an outbuilding needs no planning permission; it is an electrical installation notified under Building Regulations, which we do through our competent-person registration. Wakefield Council is the planning authority for Castleford, and listed buildings need consent for any external fixing. If you rent, your landlord's written agreement comes before anything is fixed to a wall.
Castleford battery storage questions
Who do I register a Castleford battery with?
Northern Powergrid is the network operator for Castleford, so the battery is registered with it. Up to 3.68 kW of total inverter capacity per phase is a G98 notification after the install; above that it is a G99 application approved beforehand. We submit it.
Can I have a battery fitted without solar panels in Castleford?
Yes. A standalone battery charges from the grid when electricity is cheap and discharges in the evening peak, on a time-of-use tariff open to battery-only homes. HMRC's VAT Notice 708/6 zero-rates a battery supplied and installed in a home until 31 March 2027, including a standalone battery that stores grid electricity.
Will a battery fill from my Castleford roof in winter?
Rarely from the roof alone. PVGIS gives a 4.85 kW array here about 5.7 kWh a day across November to January against 18.1 kWh a day in May to August; in winter the house uses most of what is generated as it arrives, so a battery that is to work in winter charges overnight on a time-of-use tariff.
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