A school is the awkward case for solar, and for one reason: the building is emptiest in the sunniest months. That does not kill the case, but it changes it, and a proposal that models a school on commercial assumptions is modelling a building that does not exist. The other differences are procurement, roof age and who actually owns the asset.
The summer holiday is the whole problem
Peak generation in a British year falls in June, July and August, and a school is closed or nearly empty for a large part of that. Electricity generated when nobody is there is exported rather than saved, and export is worth considerably less than avoided purchase. A credible model therefore uses the school's own half hourly data across a full year, including the holidays, rather than a generic commercial profile. Where a site has a summer let, a kitchen running through the holidays or a swimming pool, the picture improves and the model should say so explicitly.
Roof age and who owns the building
Many school buildings have roofs of known age and known remaining life, and the estates team usually has the survey. Fixing a twenty five year asset to a covering with eight years left is the standard mistake. The ownership question matters just as much: academies, local authority maintained schools, voluntary aided schools and dioceses have different consent routes, and the party that owns the freehold is usually the party that has to agree to anything fixed to the roof.
Funding routes change what you are buying
Where a grant, a public funding route or a third party ownership arrangement is involved, read what it requires. Certified installation is a common condition. Third party arrangements, where somebody else owns the array and sells you the electricity, can remove the capital cost and also remove the upside, and they attach a long contract to the building. Neither is wrong; both should be compared against buying the array outright over the same period.
What governors should have in front of them
The half hourly consumption profile the model used, the modelled generation and the self consumption fraction, the structural statement, the roof's remaining life, the consent position with whoever owns the building, the full cost including access and making good, and the maintenance obligation with its annual cost. A decision made without the roof's remaining life in front of it is the one most likely to be regretted.
Questions people ask about solar panels for schools
Do solar panels work for a school that closes in summer?
They can, but the case has to be built on the school's own consumption data rather than a commercial profile. Sites with summer activity, catering or a pool do better. Where nearly all summer generation would be exported, battery storage or a smaller array sized to term time load often makes a better case than a big roof filling array.
Who has to approve panels on a school roof?
Whoever owns the building, which depends on the school's status, plus building control and planning where the works require it. Establish the consent route before design, because it frequently sets the timetable.
Are there grants for solar panels for schools?
Public funding routes for school decarbonisation come and go and their conditions differ, so the only safe approach is to check what is currently open for your school type before assuming any figure. Installer marketing about grants is not a source.
What about a third party owning the panels?
It removes the capital cost and usually the savings upside too, and it attaches a long term agreement to the building that affects future roof works. Compare it against outright purchase across the same period and read what happens if the school wants to re roof.