Specialist solar panels for schools in Berwick-upon-Tweed
A school roof in Berwick-upon-Tweed makes 9.5 times as much in May as it does in December, and the school year runs against that curve rather than with it. What we come back with is the usable roof area, the modelled output against your meter data, and the routes schools use to pay for it.
26.1% of the modelled year lands in July and August, on a roof that returns 827 kWh per kWp a year. The worked example below runs at 270 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 Berwick-upon-Tweed- 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.
School rooftop solar across Northumberland
A one kilowatt-peak array on a shallow pitched roof in Berwick-upon-Tweed models at 827 kWh a year, from modelled irradiation of 1,049 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 7 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 270 kWp array, sized to what the nearest school scheme on record applied for, 43 miles away at Morpeth, models at about 223,300 kWh a year before shading, and needs roughly 802 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 58,300 kWh landing in July and August and roughly 8,500 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.
Berwick-upon-Tweed ranks 3 of 6 towns we cover in Northumberland on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 803 to 848, a spread of 45 kWh per kWp. On a 500 kWp array that is about 22,500 kWh a year between the strongest and weakest town in the county.
What the planning record shows around Berwick-upon-Tweed
Search the Renewable Energy Planning Database for the TD15 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.
The nearest education scheme on the record is 43 miles from Berwick-upon-Tweed, at Morpeth: 270 kWp at King Edward Vi School, Cottingwood Lane, applicant The Three Rivers Trust, which holds consent and is awaiting construction. That is someone else's application, not ours, and it is here because it shows what Northumberland planning has already accepted at an education site. Source: Renewable Energy Planning Database, Q1 2026.
The summer holiday problem for a Berwick-upon-Tweed school
26.1 percent of the annual output modelled for Berwick-upon-Tweed 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 9.5 times as much in May as it does in December, and August alone outproduces December by about 7.5 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.
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 Berwick-upon-Tweed 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 Berwick-upon-Tweed 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 Berwick-upon-Tweed 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 Northern Powergrid 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 | 18 | 12 | 6 |
| Feb | 15 | 33 | 18 | 15 |
| Mar | 21 | 66 | 45 | 21 |
| Apr | 12 | 101 | 40 | 61 |
| May | 17 | 124 | 68 | 56 |
| Jun | 21 | 115 | 81 | 35 |
| Jul | 11 | 117 | 42 | 75 |
| Aug | 0 | 98 | 0 | 98 |
| Sep | 20 | 74 | 49 | 25 |
| Oct | 17 | 43 | 24 | 19 |
| Nov | 21 | 23 | 16 | 7 |
| Dec | 15 | 13 | 6 | 7 |
| Year | 190 | 825 | 401 | 424 |
How many schools Northumberland has
Northumberland has 164 open state-funded schools and colleges on the DfE register teaching 42,515 pupils between them. Source: DfE Get Information About Schools.
The split is 127 primary, 27 secondary and 10 special, at an average of 259 pupils a site. 4.7 primaries per secondary is a mix weighted towards small sites. The roof area, and therefore most of the generation, sits with the 27 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 Northern Powergrid
Northern Powergrid operates the distribution network across Northumberland, 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 Northumberland the planning database records 38 solar schemes totalling 276 MW, of which 2 are operational (REPD Q1 2026).
Start with the Berwick-upon-Tweed roof
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.
Questions governors ask us about Berwick-upon-Tweed schools
- What would a 270 kWp array produce at a Berwick-upon-Tweed school?
- Yes, and the figure matters more than the sunshine. 827 kWh per kWp a year puts a 270 kWp array at around 223,300 kWh, on roughly 802 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 Berwick-upon-Tweed?
- 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 Northern Powergrid.
- Who do we apply to for export near Berwick-upon-Tweed?
- Only Northern Powergrid 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 Northumberland?
- 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 Northumberland. We confirm it either way.
- How many schools are there around Berwick-upon-Tweed?
- Northumberland has 164 open state-funded schools and colleges on the DfE register, with 42,515 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.