schoolsolarpanels Solar for schools and academy trusts Book a roof survey

Specialist solar panels for schools in Hexham

26.4 percent of what a Hexham school roof makes arrives in July and August, which is when the buildings are shut. A survey here starts with the covering and the structure, then the incoming supply, then what the timetable actually draws.

26.4% of the modelled year lands in July and August, on a roof that returns 803 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 Hexham
playing field 4 1 2 3 no array pending structural assessment 0 40 m N
  1. 1 teaching block
  2. 2 hall and kitchen
  3. 3 sports hall
  4. 4 1960s block, no array
  5. first phase
  6. later phase
Drawing Illustrative Northumberland estate
Blocks 4, 3 with array
Array about 345 kWp
Yield about 277,000 kWh/yr
Frontage about 90 m / Rev A / NE46

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.

Hexham / Northumberland
A school on the edge of a North East town, solar arrays on its roofs and low hills beyond
School buildings of the kind we survey across North East. Not a named school and not our work.

Solar PV for academy trusts across Northumberland

A one kilowatt-peak array on a shallow pitched roof in Hexham models at 803 kWh a year, from modelled irradiation of 1,019 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). 9 percent below our mean puts Hexham at the weaker end of the range, which raises the premium on self consumption and lowers the value of anything that leaves the site.

Scaled up, a 270 kWp array, sized to what the nearest school scheme on record applied for, 21 miles away at Morpeth, models at about 216,800 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 57,200 kWh landing in July and August and roughly 8,700 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.

FIG. 1 Hexham against the rest of Northumberland
  • Blyth848
  • Alnwick840
  • Berwick-upon-Tweed827
  • Cramlington825
  • Morpeth824
  • Hexham803

Hexham ranks 6 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.

Bars are zero based, so length is proportional to the figure. Where a county is flat, that is the finding: latitude is not the lever, the timetable is. Source: EU PVGIS v5.2, modelled per town

The planning position for Hexham schools

The NE46 postcode district has no education solar entry in the Renewable Energy Planning Database. Almost no school array is large enough to be captured there reliably, so the absence tells you about the reporting threshold and very little about what is already on the roofs around Hexham.

The closest recorded one is about 21 miles away at Morpeth: King Edward Vi School, Cottingwood Lane, a 270 kWp roof mounted array applied for by The Three Rivers Trust, which holds consent and is awaiting construction. We were not involved in it. We cite it because it is a public record of what has cleared planning in this part of Northumberland. Source: Renewable Energy Planning Database, Q1 2026.

Why demand in Hexham falls as the roof peaks

The generating year and the school year are out of step in Hexham. July and August carry 26.4 percent of the modelled output (EU PVGIS v5.2), and the site is closed for most of those nine weeks. May is the strongest single month here at 14.6 percent of the annual total, which is still term time, and that works slightly in your favour against towns whose curve peaks in July.

At the other end of the year the mismatch flips. Only 4 percent of output falls in December and January, the two months when a Hexham school is fully occupied and its heating and lighting are at their heaviest. The roof makes 8.4 times as much in May as it does in December, and August alone outproduces December by about 6.9 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.

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.

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 Hexham school is largely empty, so the hours that look best on a generation chart are the worst on a consumption one.

None of that makes a Hexham 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 Northern Powergrid, or a smaller array that consumes nearly everything it makes.

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.

FIG. 2 A Hexham roof against the English school year
0 30 60 90 120 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec kWh August: nobody in the building
  • generated while the school is open
  • generated at a weekend or in the holidays
The same figures as a table
Monthly output for a 1 kWp array in Hexham, split by whether the day is a school session day. Across the year 48 percent of generation lands while the school is open.
Month Session days Output, kWh per kWp School open School closed
Jan 20 18 12 6
Feb 15 34 18 16
Mar 21 65 44 21
Apr 12 95 38 57
May 17 117 64 53
Jun 21 109 76 33
Jul 11 115 41 74
Aug 0 97 0 97
Sep 20 72 48 24
Oct 17 43 24 19
Nov 21 24 17 7
Dec 15 14 7 7
Year 190 803 389 414
Each bar is one month's output per kWp, divided at the school gate. The May bar is 8.4 times the December one and the timetable runs the other way round. We apportion a month's generation evenly over its days, having no half hourly data for your meter. Session days follow a typical English school year of 190 days. Your own trust or authority may differ by a few days either way. Source: EU PVGIS v5.2, session days from a typical school calendar

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).

The school estate in Northumberland

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. At 4.7 primaries to every secondary, most of the buildings here are small. That is not a reason to skip them, but it does mean the usable area on a primary is a hall roof and a teaching block rather than an estate.

For a trust with more than one site in Northumberland, the first survey is worth running across the whole estate. It tells you which roofs are near the end of their covering life, which have the switchboard headroom, and therefore which one should carry the first array.

Aerial view of a school site with teaching blocks of several different ages, a sports hall and a playing field, solar arrays on two of the flat roofs
A school site with blocks of several ages, which is the usual starting point for a trust estate survey.
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Send us the school postcode

Lenzie Consulting Ltd arranges roof surveys for schools across Northumberland. Send the school postcode and a rough idea of the roof area, and the last twelve months of half hourly meter data if the school holds it. We come back with what the roofs can carry, what they would generate against your own consumption, and the funding routes open to a school.

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.

We pass your details to our MCS-certified installation partner so they can quote. Read the privacy notice.

What Hexham trusts ask before a survey

What would a 270 kWp array produce at a Hexham school?
Yes, and the figure matters more than the sunshine. 803 kWh per kWp a year puts a 270 kWp array at around 216,800 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 Hexham?
Less is wasted than governors expect, but the figure is worth seeing: 26.4 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 Hexham?
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 Hexham?
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.

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