Specialist solar panels for schools in Bootle
25.6 percent of what a Bootle 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.
25.6% of the modelled year lands in July and August, on a roof that returns 853 kWh per kWp a year. The worked example below runs at 380 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 Bootle- 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 Merseyside
A one kilowatt-peak array on a shallow pitched roof in Bootle models at 853 kWh a year, from modelled irradiation of 1,090 kWh per square metre in the plane of the array (EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss). Bootle sits 4 percent under our mean. Worth knowing, but not decisive: how well the array matches the timetable moves the answer further than the latitude does.
Scaled up, a 380 kWp array, sized to what the nearest school scheme on record applied for, 11 miles away at St Helens, models at about 324,100 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 83,000 kWh landing in July and August and roughly 13,600 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.
Bootle ranks 4 of 6 towns we cover in Merseyside on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 830 to 877, a spread of 47 kWh per kWp. On a 500 kWp array that is about 23,500 kWh a year between the strongest and weakest town in the county.
The planning position for Bootle schools
Search the Renewable Energy Planning Database for the L20 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 closest recorded one is about 11 miles away at St Helens: The Sutton Academy, Elton Head Road, a 380 kWp roof mounted array applied for by Located Property 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 Merseyside. Source: Renewable Energy Planning Database, Q1 2026.
Why demand in Bootle falls as the roof peaks
The generating year and the school year are out of step in Bootle. July and August carry 25.6 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 4.2 percent of output falls in December and January, the two months when a Bootle school is fully occupied and its heating and lighting are at their heaviest. The roof makes 7.7 times as much in May as it does in December, and August alone outproduces December by about 6.3 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.
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.
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 Bootle school is largely empty, so the hours that look best on a generation chart are the worst on a consumption one.
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 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 | 20 | 13 | 7 |
| Feb | 15 | 37 | 20 | 17 |
| Mar | 21 | 71 | 48 | 23 |
| Apr | 12 | 103 | 41 | 62 |
| May | 17 | 123 | 67 | 56 |
| Jun | 21 | 119 | 83 | 36 |
| Jul | 11 | 118 | 42 | 76 |
| Aug | 0 | 100 | 0 | 100 |
| Sep | 20 | 75 | 50 | 25 |
| Oct | 17 | 45 | 25 | 20 |
| Nov | 21 | 25 | 18 | 8 |
| Dec | 15 | 16 | 8 | 8 |
| Year | 190 | 852 | 415 | 437 |
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 Merseyside the planning database records 104 solar schemes totalling 98 MW, of which 1 are operational (REPD Q1 2026).
The school estate in Sefton
Sefton has 102 open state-funded schools and colleges on the DfE register teaching 39,791 pupils between them. Source: DfE Get Information About Schools.
The split is 77 primary, 18 secondary, 5 special and 2 further education, at an average of 390 pupils a site. 4.3 primaries per secondary is a mix weighted towards small sites. The roof area, and therefore most of the generation, sits with the 18 secondaries and the 2 further education sites.
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.
Send us the school postcode
The first survey answers three questions at once: what the roofs carry, what they generate against your own timetable, and how a Bootle school pays for it. Send the postcode, an approximate roof area per block and half hourly meter data if the school can get it from its supplier.
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 Bootle trusts ask before a survey
- Is there enough sun around Bootle for this to be worth doing?
- The model gives 853 kWh a year for every kWp installed at this latitude, so a 380 kWp array comes out at roughly 324,100 kWh a year before shading. It needs about 1,129 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 Bootle school waste its generation in August?
- 25.6 percent of the modelled annual output for Bootle 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 SP Energy Networks. We model all three against your half hourly data before an array is sized.
- Will the network around Bootle accept the export?
- SP Energy Networks is the distribution network operator for Merseyside. 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 Bootle?
- Usually permitted development covers a roof array on a school, with prior approval from Liverpool 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 Bootle?
- Sefton has 102 open state-funded schools and colleges on the DfE register, with 39,791 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.