Specialist solar panels for schools in Swadlincote

School rooftop solar across Derbyshire

A one kilowatt-peak array on a shallow pitched roof in Swadlincote models at 856 kWh a year, from modelled irradiation of 1,094 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). Swadlincote sits 3 percent under our mean. Worth knowing, but not decisive: how well the array matches the timetable moves the answer further than the latitude does.

Scaled up, a 490 kWp array, sized to what the nearest school scheme on record applied for, 10 miles away at Derby, models at about 419,400 kWh a year before shading, and needs roughly 1,455 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 107,800 kWh landing in July and August and roughly 20,100 kWh across December and January. National Grid Electricity Distribution 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 Swadlincote

There is no school entry for the DE11 postcode district in the Renewable Energy Planning Database. The register is dependable for anything from a megawatt upward and incomplete below it, and a school array is usually nearer a fifth of a megawatt, so this says more about the threshold than about Swadlincote.

The nearest education scheme on the record is 10 miles from Swadlincote, at Derby: 490 kWp at Landau Forte College, Fox Street, applicant eEnergy Group PLC, which is with the planning authority. That is someone else's application, not ours, and it is here because it shows what Derbyshire planning has already accepted at an education site. Source: Renewable Energy Planning Database, Q1 2026.

The summer holiday problem for a Swadlincote school

25.7 percent of the annual output modelled for Swadlincote 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 13.9 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 4.8 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 6.3 times as much in July as it does in December, and August alone outproduces December by about 5.3 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 same mismatch repeats every day. Peak generation lands between eleven and three, the timetable ends shortly after, and by four the site is down to caretaking and cleaning. An annual consumption figure cannot show that, which is why we ask for the half hourly data instead.

None of that makes a Swadlincote 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 National Grid Electricity Distribution, 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 National Grid Electricity Distribution

Connections around Swadlincote are handled by National Grid Electricity Distribution, which sets the export limit for the site. Above 3.68 kW per phase the connection runs under G99, so the export limit is agreed in advance rather than assumed. Where the local network is constrained, an export-limited connection usually still makes the scheme work, because a school uses most of what the roof makes during the working day.

Across Derbyshire the planning database records 144 solar schemes totalling 904 MW, of which 27 are operational (REPD Q1 2026).

How many schools South Derbyshire has

South Derbyshire has 46 open state-funded schools and colleges on the DfE register teaching 13,179 pupils between them. Source: DfE Get Information About Schools.

The split is 42 primary and 4 secondary, at an average of 287 pupils a site. A ratio of 10.5 to one tells you where the roof area is. It is not with the 42 primaries, which mostly offer a hall and a teaching block each, but with the larger sites that were built with a sports hall and a dining block attached.

Where a multi-academy trust holds several of those sites, surveying the estate in one pass beats taking a roof at a time. The design work, the connection applications and the procurement paperwork are the same job repeated, and a trust that runs them together gets a better answer on all three.

Questions governors ask us about Swadlincote schools

Is there enough sun around Swadlincote for this to be worth doing?

The model gives 856 kWh a year for every kWp installed at this latitude, so a 490 kWp array comes out at roughly 419,400 kWh a year before shading. It needs about 1,455 square metres of clear roof once walkways and rooflight setbacks are allowed for. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

Does a Swadlincote school waste its generation in August?

25.7 percent of the modelled annual output for Swadlincote falls in July and August, when the buildings are closed for most of six weeks (EU PVGIS v5.2). It does not go to waste, but it only has three places to go: the base load that runs regardless, such as servers, catering refrigeration and ventilation; storage; or export under an agreement with National Grid Electricity Distribution. We model all three against your half hourly data before an array is sized.

Will the network around Swadlincote accept the export?

National Grid Electricity Distribution is the distribution network operator for Derbyshire. Anything above 3.68 kW per phase connects under G99, and the application fixes the export limit. On a school site the incoming supply is often the binding constraint rather than the roof, so we ask that question before anyone sizes an array.

Is planning permission needed for panels on a school in Swadlincote?

Usually permitted development covers a roof array on a school, with prior approval from South Derbyshire needed above a capacity threshold. A ground mounted array in the grounds is a different question and much more likely to need a full application. We check both before design sign-off.

How many schools are there around Swadlincote?

South Derbyshire has 46 open state-funded schools and colleges on the DfE register, with 13,179 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.

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