Specialist solar panels for schools in Ilkley
A kilowatt-peak on a Ilkley school roof models at 813 kWh a year, below the mean across the towns we cover, and the roofs it applies to are mostly carrying nothing. The survey records sheet type, remaining life, purlin spacing and the state of the incoming supply, and the model runs off your own meter data rather than an average.
357,700 kWh a year, modelled for a 440 kWp array on roughly 1,307 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 Ilkley- 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 PV for academy trusts across West Yorkshire
A one kilowatt-peak array on a shallow pitched roof in Ilkley models at 813 kWh a year, from modelled irradiation of 1,034 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 8 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 440 kWp array, sized to what the nearest school scheme on record applied for, 19 miles away at Ripon, models at about 357,700 kWh a year before shading, and needs roughly 1,307 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 94,400 kWh landing in July and August and roughly 14,000 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.
Ilkley ranks 6 of 8 towns we cover in West Yorkshire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 811 to 846, a spread of 35 kWh per kWp. Within West Yorkshire that difference is small enough to ignore: where the building sits is not what decides this scheme, your consumption pattern is.
The planning position for Ilkley schools
The Renewable Energy Planning Database holds no school scheme for the LS29 postcode district. Read that as a gap in the record, not a gap in the roofs: the database is reliable above one megawatt and thin below it, and a school array is typically a fifth of a megawatt.
The closest recorded one is about 19 miles away at Ripon: Ripon Grammar School, Clotherholme Road, a 440 kWp roof mounted array applied for by Solar Options for Schools Limited, 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 North Yorkshire. Source: Renewable Energy Planning Database, Q1 2026.
Why demand in Ilkley falls as the roof peaks
The generating year and the school year are out of step in Ilkley. 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 14.4 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 3.9 percent of output falls in December and January, the two months when a Ilkley 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 7.1 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 Ilkley as anywhere else.
The weekly pattern repeats the annual one. Saturdays and Sundays generate as well as any other day and consume almost nothing, so before storage or export is even discussed it is worth knowing what the site does at a weekend, which only half hourly data will tell you.
The conclusion is not that a Ilkley 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 whole argument about term dates and 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 | 34 | 18 | 16 |
| Mar | 21 | 66 | 45 | 21 |
| Apr | 12 | 97 | 39 | 58 |
| May | 17 | 117 | 64 | 53 |
| Jun | 21 | 112 | 78 | 34 |
| Jul | 11 | 116 | 41 | 75 |
| Aug | 0 | 99 | 0 | 99 |
| Sep | 20 | 73 | 49 | 24 |
| Oct | 17 | 44 | 24 | 20 |
| Nov | 21 | 24 | 17 | 7 |
| Dec | 15 | 14 | 7 | 7 |
| Year | 190 | 814 | 394 | 420 |
The school estate in Bradford
Bradford has 211 open state-funded schools and colleges on the DfE register teaching 95,219 pupils between them. Source: DfE Get Information About Schools.
The split is 164 primary, 35 secondary, 8 special and 4 further education, at an average of 451 pupils a site. That is 4.7 primaries for every secondary, which is the ratio that matters for a roof: a primary of a few hundred pupils usually offers a hall roof and one teaching block, while a secondary site carries a sports hall, a dining block and several flat roofs.
If your trust holds several of them, the sequencing question comes before the sizing question. Roof age, covering type and the state of the incoming supply vary block by block across an estate, and that is normally what sets the order of works.
Grid connection through Northern Powergrid
Northern Powergrid 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 West Yorkshire the planning database records 170 solar schemes totalling 550 MW, of which 8 are operational (REPD Q1 2026).
Send us the school postcode
A survey in Ilkley 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 Ilkley 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.
What Ilkley trusts ask before a survey
- Is there enough sun around Ilkley for this to be worth doing?
- The model gives 813 kWh a year for every kWp installed at this latitude, so a 440 kWp array comes out at roughly 357,700 kWh a year before shading. It needs about 1,307 square metres of clear roof once walkways and rooflight setbacks are allowed for. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
- Does a Ilkley school waste its generation in August?
- 26.4 percent of the modelled annual output for Ilkley falls in July and August, when the buildings are closed for most of six weeks (EU PVGIS v5.2). It does not go to waste, but it only has three places to go: the base load that runs regardless, such as servers, catering refrigeration and ventilation; storage; or export under an agreement with Northern Powergrid. We model all three against your half hourly data before an array is sized.
- Will the network around Ilkley accept the export?
- Northern Powergrid is the distribution network operator for West Yorkshire. Anything above 3.68 kW per phase connects under G99, and the application fixes the export limit. On a school site the incoming supply is often the binding constraint rather than the roof, so we ask that question before anyone sizes an array.
- Is planning permission needed for panels on a school in Ilkley?
- Usually permitted development covers a roof array on a school, with prior approval from Harrogate needed above a capacity threshold. A ground mounted array in the grounds is a different question and much more likely to need a full application. We check both before design sign-off.
- How many schools are there around Ilkley?
- Bradford has 211 open state-funded schools and colleges on the DfE register, with 95,219 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.