Specialist solar panels for schools in Sheffield
What decides a solar scheme at a Sheffield school is how much of the output the site uses itself, not how much the roof makes. We arrange the roof survey, model the output against the school's own half hourly consumption, and set out the funding routes.
830 kWh per kWp a year at this latitude, so a 200 kWp array, the size applied for at the nearest school scheme on record, models at about 166,000 kWh. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Book a roof survey in Sheffield- 1 teaching block
- 2 hall and kitchen
- 3 sports hall
- 4 1960s block, no array
- first phase
- later phase
Illustrative layout for an estate of this size. The array is drawn at about 345 kWp, roughly 53 percent of the 650 kWp these three roofs would hold, because a school sizes to the load it can use in term time rather than to the roof it has: generation it cannot use is exported at a much lower rate than it pays to import. The hatched block carries no array because its structure has not been assessed, which on a school of that era is the usual starting point rather than an exception. Your own figures, and which of your blocks can take an array, come from the roof survey.
Solar for education buildings across South Yorkshire
A one kilowatt-peak array on a shallow pitched roof in Sheffield models at 830 kWh a year, from modelled irradiation of 1,060 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is about 6 percent below the mean across the towns we cover, so the case at this latitude rests almost entirely on using the output on site rather than exporting it.
Scaled up, a 200 kWp array, sized to what the nearest school scheme on record applied for, 16 miles away at Matlock, models at about 166,000 kWh a year before shading, and needs roughly 594 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 43,300 kWh landing in July and August and roughly 7,600 kWh across December and January. Northern Powergrid 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.
Sheffield ranks 6 of 6 towns we cover in South Yorkshire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 830 to 856, a spread of 26 kWh per kWp. Within South Yorkshire that difference is small enough to ignore: where the building sits is not what decides this scheme, your consumption pattern is.
School solar on record near S2
Search the Renewable Energy Planning Database for the S2 postcode district and nothing comes back under education. That is worth stating plainly and then setting aside: the register is built around generating stations, a school array is a fraction of the size it captures reliably, and plenty of school roofs never appear in any national record at all.
Look 16 miles out and there is one: Anthony Gell School, Wood Street in Matlock, 200 kWp, applied for by Private Developer, which is with the planning authority. None of our doing. It is a public planning record, and the nearest evidence available of how an application like yours is treated around here. Source: Renewable Energy Planning Database, Q1 2026.
Term dates against the Sheffield generation curve
A Sheffield school roof generates most in the weeks its buildings are closed. 26.1 percent of the modelled year lands in July and August alone (EU PVGIS v5.2), and the summer holiday takes roughly six of those nine weeks out of the timetable. May is the strongest single month here at 14 percent of the annual total, which is still term time, and that works slightly in your favour against towns whose curve peaks in July.
Winter reverses it. December and January between them return 4.6 percent of the modelled year, and that is when the heating, the lighting and a full register are all drawing at the same time. The roof makes 6.4 times as much in May as it does in December, and August alone outproduces December by about 5.6 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.
Summed over the year, about 49 percent of what a school roof makes arrives while the school is open. For a business trading every weekday the equivalent is roughly 71 percent. Nothing about Sheffield changes that ratio much, but plenty about your own site changes what to do with it.
The daily curve does the same thing in miniature. Load drops sharply after about three o'clock, generation does not, so the last three hours of a summer afternoon are pushing into an empty building unless something absorbs them. Half hourly meter data is the only way to see how much.
A Sheffield governing body should read that as a sizing constraint, not a reason to stop. The base load that runs through the holidays, servers, comms, refrigeration, ventilation and hot water, is the floor the array should be built up from, and everything above it has to be justified by storage, export or summer occupancy.
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.
- generated while the school is open
- generated at a weekend or in the holidays
The same figures as a table
| Month | Session days | Output, kWh per kWp | School open | School closed |
|---|---|---|---|---|
| Jan | 20 | 20 | 13 | 7 |
| Feb | 15 | 36 | 19 | 17 |
| Mar | 21 | 69 | 47 | 22 |
| Apr | 12 | 97 | 39 | 58 |
| May | 17 | 116 | 64 | 52 |
| Jun | 21 | 112 | 78 | 34 |
| Jul | 11 | 116 | 41 | 75 |
| Aug | 0 | 101 | 0 | 101 |
| Sep | 20 | 75 | 50 | 25 |
| Oct | 17 | 45 | 25 | 20 |
| Nov | 21 | 26 | 18 | 8 |
| Dec | 15 | 18 | 9 | 9 |
| Year | 190 | 831 | 403 | 428 |
Sheffield schools, phase by phase
Sheffield has 179 open state-funded schools and colleges on the DfE register teaching 80,329 pupils between them. Source: DfE Get Information About Schools.
The split is 134 primary, 30 secondary, 12 special and 3 further education, at an average of 449 pupils a site. 4.5 primaries per secondary is a mix weighted towards small sites. The roof area, and therefore most of the generation, sits with the 30 secondaries and the 3 further education sites.
Across an estate of that size the roofs will not be in the same condition, and that is the point of surveying them together: the block with the best orientation is often not the block whose covering has twenty years left in it.
Grid connection through Northern Powergrid
Connections around Sheffield are handled by Northern Powergrid, 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 South Yorkshire the planning database records 93 solar schemes totalling 1624 MW, of which 8 are operational (REPD Q1 2026).
Book a roof survey at your Sheffield school
Roof condition decides the order of works on most school estates, so that is where we start. Send us the postcode and a rough roof area, with twelve months of half hourly readings if you have them, and we come back with usable area, modelled output against your own load, and the funding routes.
Lenzie Consulting Ltd arranges the survey and passes your details to an MCS-certified installation partner so they can quote. We do not carry out the installation ourselves.
Sheffield school solar, answered
- How much would a school roof near Sheffield generate?
- Modelled at 830 kWh per kWp a year, a 200 kWp array on a Sheffield school models at about 166,000 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 Sheffield?
- It goes somewhere, just not into the timetable. 26.1 percent of the Sheffield 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 Northern Powergrid, or a sign the array is too big. We test which before sizing anything.
- Which network operator handles the connection at a Sheffield school?
- Applications go to Northern Powergrid, who run the network across South Yorkshire. 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 Sheffield 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 Sheffield on siting and design. Listed buildings and conservation areas are the usual exceptions. We put the position to Sheffield before a design is finalised.
- How many schools are there around Sheffield?
- Sheffield has 179 open state-funded schools and colleges on the DfE register, with 80,329 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.