schoolsolarpanels Solar for schools and academy trusts Book a roof survey

Specialist solar panels for schools in Bangor

What decides a solar scheme at a Bangor school is how much of the output the site uses itself, not how much the roof makes. We start with the roof build up and the age of the covering, because across a school estate that is usually what decides which block goes first.

278,500 kWh a year, modelled for a 380 kWp array on roughly 1,129 sqm of clear roof. That is 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 Bangor
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 estate, not a Bangor school
Blocks 4, 3 with array
Array about 345 kWp
Yield about 253,000 kWh/yr
Frontage about 90 m / Rev A / Gwynedd

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.

Bangor / Gwynedd
A two storey 1970s school block with a shallow pitched roof covered in solar panels, empty playground in front and a playing field beyond
School buildings of the kind we survey across Gwynedd. Not a named school and not our work.

Solar for education buildings across Gwynedd

A one kilowatt-peak array on a shallow pitched roof in Bangor models at 733 kWh a year, from modelled irradiation of 941 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). 17 percent below our mean puts Bangor 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 380 kWp array, sized to what the nearest school scheme on record applied for, 59 miles away at St Helens, models at about 278,500 kWh a year before shading, and needs roughly 1,129 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 71,000 kWh landing in July and August and roughly 10,600 kWh across December and January. SP Energy 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.

FIG. 1 Bangor against the rest of Gwynedd
  • Pwllheli887
  • Porthmadog820
  • Caernarfon798
  • Dolgellau746
  • Bangor733
  • Bethesda704

Bangor ranks 5 of 6 towns we cover in Gwynedd on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 704 to 887, a spread of 183 kWh per kWp. On a 500 kWp array that is about 91,500 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

School solar on record near Bangor

Bangor and the area around it 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 Bangor.

Look 59 miles out and there is one: The Sutton Academy, Elton Head Road in St Helens, 380 kWp, applied for by Located Property Limited, 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 Bangor generation curve

A Bangor school roof generates most in the weeks its buildings are closed. 25.5 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 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.

Winter reverses it. December and January between them return 3.8 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 9.2 times as much in June as it does in December, and August alone outproduces December by about 7 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.

Across the country the arithmetic settles at roughly 49 percent of output on a session day, against about 71 percent for a weekday business. That figure hardly varies by location, which is why the local numbers that matter here are the yield, the roofs and what has already cleared planning nearby.

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.

That argues for a particular shape of scheme rather than against one. Size to the load that does not stop at the end of term, count in lettings, holiday clubs and summer works honestly rather than optimistically, and then decide whether storage or an export arrangement with SP Energy Networks pays for the surplus that is left.

We set out the whole argument about term dates and the generation curve on the home page, and what it does to a payback figure under costs.

FIG. 2 A Bangor roof against the Welsh 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 Bangor, split by whether the day is a school session day. Across the year 49 percent of generation lands while the school is open.
Month Session days Output, kWh per kWp School open School closed
Jan 20 16 10 6
Feb 15 30 16 14
Mar 21 59 40 19
Apr 12 91 36 55
May 17 109 60 49
Jun 21 110 77 33
Jul 11 103 37 66
Aug 0 84 0 84
Sep 20 64 43 21
Oct 17 37 20 17
Nov 21 19 13 6
Dec 15 12 6 6
Year 190 734 358 376
Per kWp installed, month by month, separating generation while the school is open from generation at a weekend or in the holidays. 76 percent of the Bangor year sits between April and September, most of which is term time; it is the tail of that period, the last week of July and all of August, that the school is not there for. The daily split is a flat apportionment of each month, not a metered one. Session days follow a typical school year in England and Wales, 190 days on broadly the same dates. Your own authority or trust may differ by a few days. Source: EU PVGIS v5.2, session days from a typical school calendar

Grid connection through SP Energy Networks

SP Energy Networks is the network operator here, and their answer on export capacity shapes the design. Any commercial array above 3.68 kW per phase connects under G99 rather than G98, and the application fixes what you are allowed to push back onto the network. If the local network is tight, limiting export rarely breaks the case here: most of the generation is consumed on site while the building is working.

Across Gwynedd the planning database records 19 solar schemes totalling 221 MW, of which 6 are operational (REPD Q1 2026).

Book the survey

Book a roof survey at your Bangor school

We survey school and college roofs throughout Gwynedd. We need the postcode, a rough roof area and your half hourly meter data if the trust has it. From that we model what the roof carries, what it generates against the timetable, and which of the funding routes actually suits a school of your size.

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.

Bangor school solar, answered

What would a 380 kWp array produce at a Bangor school?
Yes, and the figure matters more than the sunshine. 733 kWh per kWp a year puts a 380 kWp array at around 278,500 kWh, on roughly 1,129 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 Bangor?
Less is wasted than governors expect, but the figure is worth seeing: 25.5 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 SP Energy Networks.
Who do we apply to for export near Bangor?
Only SP Energy Networks 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.