Specialist solar panels for schools in Carlisle

School rooftop solar across Cumbria

A one kilowatt-peak array on a shallow pitched roof in Carlisle models at 806 kWh a year, from modelled irradiation of 1,027 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). 9 percent below our mean puts Carlisle at the weaker end of the range, which raises the premium on self consumption and lowers the value of anything that leaves the site.

Scaled up, a 210 kWp array, sized to what the nearest school scheme on record applied for, 35 miles away at Whitehaven, models at about 169,300 kWh a year before shading, and needs roughly 624 square metres of clear roof. We take the size from the nearest real application rather than a round number, so the example is anchored to something a planning officer has already seen.

Spread across the year that is about 44,200 kWh landing in July and August and roughly 6,400 kWh across December and January. Electricity North West sets what may go back onto the network here, so the July figure is the one worth putting in front of a governing body first.

What the planning record shows around Carlisle

The Renewable Energy Planning Database holds no school scheme for the CA2 postcode district. Read that as a gap in the record, not a gap in the roofs: the database is reliable above one megawatt and thin below it, and a school array is typically a fifth of a megawatt.

The nearest education scheme on the record is 35 miles from Carlisle, at Whitehaven: 210 kWp at Whitehaven Academy, applicant The Whitehaven Academy, which holds consent and is awaiting construction. That is someone else's application, not ours, and it is here because it shows what Cumbria planning has already accepted at an education site. Source: Renewable Energy Planning Database, Q1 2026.

The summer holiday problem for a Carlisle school

26.1 percent of the annual output modelled for Carlisle arrives in the two months a school uses least (EU PVGIS v5.2). Term ends in the third week of July and the buildings stay largely empty until September. May is the strongest single month here at 15 percent of the annual total, which is still term time, and that works slightly in your favour against towns whose curve peaks in July.

The inverse holds at the other end. December and January together return only 3.8 percent of the year, and those are the months with the heating, the lighting and the full timetable all running at once. The roof makes 8.6 times as much in May as it does in December, and August alone outproduces December by about 6.9 to one. 76 percent of the year arrives between April and September, and the point of that figure is not that the summer half goes unused, because April, May and June are full teaching months that draw hard. It is that the concentration peaks in the few weeks at the end of it when the building is shut.

Put the two calendars together and roughly 49 percent of a school's generation nationally lands on a session day, against about 71 percent for a business open every weekday. That gap is the whole difference between appraising a school roof and appraising any other commercial one, and it barely moves from town to town.

The weekly pattern repeats the annual one. Saturdays and Sundays generate as well as any other day and consume almost nothing, so before storage or export is even discussed it is worth knowing what the site does at a weekend, which only half hourly data will tell you.

None of that makes a Carlisle scheme a bad one. It changes what the scheme should be: sized against the base load that runs whether or not the school is open, which on most sites is servers, comms, catering refrigeration, ventilation and hot water, with lettings, holiday clubs and summer works added on top. Where that base load is thin, the choices are storage, an export arrangement through Electricity North West, or a smaller array that consumes nearly everything it makes.

We set out the complete version of the term time arithmetic on the home page, and what it does to a payback figure under costs.

Grid connection through Electricity North West

Electricity North West operates the distribution network across Cumbria, so the export application goes to them. Anything larger than 3.68 kW per phase falls under G99, which means an application before commissioning rather than a notification afterwards. A constrained network is not the end of a scheme. Capping export costs little when the building already absorbs most of what the roof produces.

Across Cumbria the planning database records 86 solar schemes totalling 574 MW, of which 17 are operational (REPD Q1 2026).

How many schools Cumberland has

Cumberland has 171 open state-funded schools and colleges on the DfE register teaching 38,686 pupils between them. Source: DfE Get Information About Schools.

The split is 148 primary, 19 secondary, 3 special and 1 further education, at an average of 226 pupils a site. That is 7.8 primaries for every secondary, which is the ratio that matters for a roof: a primary of a few hundred pupils usually offers a hall roof and one teaching block, while a secondary site carries a sports hall, a dining block and several flat roofs.

If your trust holds several of them, the sequencing question comes before the sizing question. Roof age, covering type and the state of the incoming supply vary block by block across an estate, and that is normally what sets the order of works.

Questions governors ask us about Carlisle schools

What would a 210 kWp array produce at a Carlisle school?

Yes, and the figure matters more than the sunshine. 806 kWh per kWp a year puts a 210 kWp array at around 169,300 kWh, on roughly 624 square metres of roof. The value of that depends on your term time load. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

What happens to the electricity during the summer holidays in Carlisle?

Less is wasted than governors expect, but the figure is worth seeing: 26.1 percent of the year is modelled to arrive in July and August here (EU PVGIS v5.2), against a site running on holiday base load. Lettings, holiday clubs and summer works take some of it, storage takes more, and the rest is an export question for Electricity North West.

Who do we apply to for export near Carlisle?

Only Electricity North West can answer it for your connection. What we can say is that a capped export limit rarely breaks a school scheme, because the array that suits a school is sized to the term time load rather than to the roof.

Do we need planning permission in Carlisle?

Often not, because panels on the roof of a school building usually sit within permitted development for non-domestic buildings. The exceptions are listed buildings, conservation areas and arrays that project too far above the roof plane, and larger schemes still need prior approval from Carlisle. We confirm it either way.

How many schools are there around Carlisle?

Cumberland has 171 open state-funded schools and colleges on the DfE register, with 38,686 pupils on roll. Source: DfE Get Information About Schools. We survey across the whole of that area, and where a trust holds several sites we look at them in one pass.

Nearby

• School roofs in Barrow-in-Furness
• School roofs in Kendal
• School roofs in Whitehaven
• School roofs in Workington
• School roofs in Penrith
• School roofs in Chester

All Cumbria locations