Specialist solar panels for schools in Canterbury

School rooftop solar across Kent

A one kilowatt-peak array on a shallow pitched roof in Canterbury models at 961 kWh a year, from modelled irradiation of 1,225 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). At 8 percent above our mean, Canterbury is at the strong end of the range, and a roof here earns more for every square metre than the same roof would further north.

Scaled up, a 260 kWp array, sized to what the nearest school scheme on record applied for, 14 miles away at Dover, models at about 249,900 kWh a year before shading, and needs roughly 772 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 64,500 kWh landing in July and August and roughly 12,700 kWh across December and January. UK Power Networks 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 Canterbury

No school or college solar scheme appears in the CT1 postcode district in the Renewable Energy Planning Database. That is a reporting threshold rather than a verdict. The database records generating stations from one megawatt upward reliably and smaller ones patchily, and almost every school array is a fraction of that, so a roof full of panels on a Canterbury secondary could be generating today without ever reaching it.

The nearest education scheme on the record is 14 miles from Canterbury, at Dover: 260 kWp at Westmount Education Centre, applicant Blackap Limited, which holds consent and is awaiting construction. That is someone else's application, not ours, and it is here because it shows what Kent planning has already accepted at an education site. Source: Renewable Energy Planning Database, Q1 2026.

The summer holiday problem for a Canterbury school

25.8 percent of the annual output modelled for Canterbury 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. July is the single strongest month here at 14 percent of the annual total, and it falls almost entirely inside the holiday.

The inverse holds at the other end. December and January together return only 5.1 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 5.9 times as much in July as it does in December, and August alone outproduces December by about 4.9 to one. 74 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 Canterbury 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 UK Power Networks, 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 UK Power Networks

UK Power Networks operates the distribution network across Kent, 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 Kent the planning database records 237 solar schemes totalling 2072 MW, of which 45 are operational (REPD Q1 2026).

How many schools Canterbury has

Canterbury has 47 open state-funded schools and colleges on the DfE register teaching 22,211 pupils between them. Source: DfE Get Information About Schools.

The split is 35 primary, 10 secondary and 2 special, at an average of 473 pupils a site. Read 3.5 primaries per secondary as a sequencing hint rather than a statistic. A primary is a single survey visit and a modest array; a secondary is several roofs of different ages on one site, and that is where both the area and the complications are.

A trust holding more than one of these sites should look at them together. Grouping the surveys turns the grid question, the funding question and the procurement route into one exercise rather than four, and it usually changes which roof goes first.

Questions governors ask us about Canterbury schools

How much would a school roof near Canterbury generate?

Modelled at 961 kWh per kWp a year, a 260 kWp array on a Canterbury school models at about 249,900 kWh. What decides whether that is worth doing is how much of it the school uses itself, not the total. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

How does the school year affect a solar scheme in Canterbury?

It goes somewhere, just not into the timetable. 25.8 percent of the Canterbury generating year lands in July and August (EU PVGIS v5.2), and a closed school still runs servers, comms, refrigeration and ventilation. What that base load does not absorb is either stored, exported under an agreement with UK Power Networks, or a sign the array is too big. We test which before sizing anything.

Which network operator handles the connection at a Canterbury school?

Applications go to UK Power Networks, who run the network across Kent. An export-limited offer usually still works for a school, because the summer surplus is the part you were least likely to be paid much for anyway.

What does Canterbury require for solar on a school building?

Roof-mounted solar on a non-domestic building often falls within permitted development under Part 14 of the General Permitted Development Order, subject to limits on how far the panels stand proud of the roof plane and, above a threshold, to prior approval from Canterbury on siting and design. Listed buildings and conservation areas are the usual exceptions. We put the position to Canterbury before a design is finalised.

How many schools are there around Canterbury?

Canterbury has 47 open state-funded schools and colleges on the DfE register, with 22,211 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 Maidstone
• School roofs in Chatham
• School roofs in Dartford
• School roofs in Margate
• School roofs in Gravesend
• School roofs in Folkestone

All Kent locations