Specialist solar panels for schools in Clacton-on-Sea
What decides a solar scheme at a Clacton-on-Sea 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.
25.9% of the modelled year lands in July and August, on a roof that returns 973 kWh per kWp a year. The worked example below runs at 220 kWp, the size applied for at the nearest school scheme on record. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
Book a roof survey in Clacton-on-Sea- 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 Essex
A one kilowatt-peak array on a shallow pitched roof in Clacton-on-Sea models at 973 kWh a year, from modelled irradiation of 1,232 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). That is around 10 percent above the mean across the towns we cover, which is about as strong as a UK school roof gets.
Scaled up, a 220 kWp array, sized to what the nearest school scheme on record applied for, 13 miles away at Felixstowe, models at about 214,100 kWh a year before shading, and needs roughly 653 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 55,500 kWh landing in July and August and roughly 10,100 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.
Clacton-on-Sea ranks 1 of 10 towns we cover in Essex on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 908 to 973, a spread of 65 kWh per kWp. On a 500 kWp array that is about 32,500 kWh a year between the strongest and weakest town in the county.
School solar on record near CO15
Search the Renewable Energy Planning Database for the CO15 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 13 miles out and there is one: Felixstowe School, High Street in Felixstowe, 220 kWp, applied for by eEnergy, which holds consent and is awaiting construction. 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 Clacton-on-Sea generation curve
A Clacton-on-Sea school roof generates most in the weeks its buildings are closed. 25.9 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. June is the strongest single month here at 14.1 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 4.7 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 6.5 times as much in June as it does in December, and August alone outproduces December by about 5.5 to one. 75 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.
Nationally this comes out at about 49 percent of annual generation falling on a session day. A business open every weekday sees roughly 71 percent. The 22 point gap is what a school appraisal has to absorb, and it is much the same in Clacton-on-Sea as anywhere else.
Inside the day it happens again. The roof is still at three quarters of its peak at four in the afternoon, by which time a Clacton-on-Sea school is largely empty, so the hours that look best on a generation chart are the worst on a consumption one.
The conclusion is not that a Clacton-on-Sea school should do nothing. It is that the array should be sized to the load that survives the holidays, which is usually the server room, the catering refrigeration, the ventilation and the hot water, plus whatever the site lets out over the summer. Anything above that line needs storage or an export agreement with UK Power Networks to earn its keep.
We set out the full treatment of the school year against the generation curve 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 | 25 | 16 | 9 |
| Feb | 15 | 40 | 21 | 19 |
| Mar | 21 | 77 | 52 | 25 |
| Apr | 12 | 115 | 46 | 69 |
| May | 17 | 133 | 73 | 60 |
| Jun | 21 | 137 | 96 | 41 |
| Jul | 11 | 137 | 49 | 88 |
| Aug | 0 | 115 | 0 | 115 |
| Sep | 20 | 89 | 59 | 30 |
| Oct | 17 | 54 | 30 | 24 |
| Nov | 21 | 31 | 22 | 9 |
| Dec | 15 | 21 | 10 | 11 |
| Year | 190 | 974 | 474 | 500 |
Tendring schools, phase by phase
Tendring has 47 open state-funded schools and colleges on the DfE register teaching 19,229 pupils between them. Source: DfE Get Information About Schools.
The split is 39 primary, 6 secondary and 2 special, at an average of 409 pupils a site. 6.5 primaries per secondary is a mix weighted towards small sites. The roof area, and therefore most of the generation, sits with the 6 secondaries.
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 UK Power Networks
Connections around Clacton-on-Sea are handled by UK Power Networks, 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 Essex the planning database records 221 solar schemes totalling 2787 MW, of which 46 are operational (REPD Q1 2026).
Book a roof survey at your Clacton-on-Sea school
A survey in Clacton-on-Sea starts with three things from you. Give us the postcode, the approximate roof area and, if you can get it from your supplier, twelve months of half hourly readings. What comes back is a usable area figure per block, output modelled against your own load rather than an average, and the ways a Clacton-on-Sea school can pay for it.
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.
Clacton-on-Sea school solar, answered
- How much would a school roof near Clacton-on-Sea generate?
- Modelled at 973 kWh per kWp a year, a 220 kWp array on a Clacton-on-Sea school models at about 214,100 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 Clacton-on-Sea?
- It goes somewhere, just not into the timetable. 25.9 percent of the Clacton-on-Sea 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 Clacton-on-Sea school?
- Applications go to UK Power Networks, who run the network across Essex. 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 Tendring 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 Tendring on siting and design. Listed buildings and conservation areas are the usual exceptions. We put the position to Tendring before a design is finalised.
- How many schools are there around Clacton-on-Sea?
- Tendring has 47 open state-funded schools and colleges on the DfE register, with 19,229 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.