How much would a school roof near Macclesfield generate?

Modelled at 790 kWh per kWp a year, a 160 kWp array on a Macclesfield school models at about 126,400 kWh. What decides whether that is worth doing is how much of it the school uses itself, not the total. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.

How does the school year affect a solar scheme in Macclesfield?

It goes somewhere, just not into the timetable. 25.7 percent of the Macclesfield generating year lands in July and August (EU PVGIS v5.2), and a closed school still runs servers, comms, refrigeration and ventilation. What that base load does not absorb is either stored, exported under an agreement with SP Energy Networks / Electricity North West, or a sign the array is too big. We test which before sizing anything.

Which network operator handles the connection at a Macclesfield school?

Applications go to SP Energy Networks / Electricity North West, who run the network across Cheshire. An export-limited offer usually still works for a school, because the summer surplus is the part you were least likely to be paid much for anyway.

What does Cheshire East require for solar on a school building?

Roof-mounted solar on a non-domestic building often falls within permitted development under Part 14 of the General Permitted Development Order, subject to limits on how far the panels stand proud of the roof plane and, above a threshold, to prior approval from Cheshire East on siting and design. Listed buildings and conservation areas are the usual exceptions. We put the position to Cheshire East before a design is finalised.

How many schools are there around Macclesfield?

Cheshire East has 157 open state-funded schools and colleges on the DfE register, with 57,006 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.

Specialist solar panels for schools in Macclesfield

What decides a solar scheme at a Macclesfield school is how much of the output the site uses itself, not how much the roof makes. We arrange the roof survey, model the output against the school's own half hourly consumption, and set out the funding routes.

126,400 kWh a year, modelled for a 160 kWp array on roughly 475 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 Macclesfield

1 teaching block
2 hall and kitchen
3 sports hall
4 1960s block, no array
first phase
later phase

Drawing Illustrative estate, not a Macclesfield school

Blocks 4, 3 with array

Array about 345 kWp

Yield about 273,000 kWh/yr

Frontage about 90 m / Rev A / SK11

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.

Macclesfield / Cheshire

A school on the edge of a Greater Manchester town, solar arrays on its roofs and low Pennine hills beyond — School buildings of the kind we survey across North West. Not a named school and not our work.

Solar for education buildings across Cheshire

A one kilowatt-peak array on a shallow pitched roof in Macclesfield models at 790 kWh a year, from modelled irradiation of 1,010 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 11 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 160 kWp array, sized to what the nearest school scheme on record applied for, 15 miles away at Manchester, models at about 126,400 kWh a year before shading, and needs roughly 475 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 32,500 kWh landing in July and August and roughly 4,900 kWh across December and January. SP Energy Networks / Electricity North West 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 Macclesfield against the rest of Cheshire

Nantwich840
Chester836
Crewe835
Ellesmere Port835
Northwich832
Warrington828
Wilmslow801
Macclesfield790

Macclesfield ranks 8 of 8 towns we cover in Cheshire on modelled yield, against a national mean of 886 kWh per kWp. The county runs from 790 to 840, a spread of 50 kWh per kWp. On a 500 kWp array that is about 25,000 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 SK11

The Renewable Energy Planning Database holds no school scheme for the SK11 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.

Look 15 miles out and there is one: Co Op Academy Belle Vue, Hyde Road in Manchester, 160 kWp, applied for by Co-op Academy Trust, which is with the planning authority. 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 Macclesfield generation curve

A Macclesfield school roof generates most in the weeks its buildings are closed. 25.7 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. May is the strongest single month here at 14.2 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 3.9 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 7.5 times as much in May as it does in December, and August alone outproduces December by about 6.2 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.

Summed over the year, about 49 percent of what a school roof makes arrives while the school is open. For a business trading every weekday the equivalent is roughly 71 percent. Nothing about Macclesfield changes that ratio much, but plenty about your own site changes what to do with it.

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.

A Macclesfield governing body should read that as a sizing constraint, not a reason to stop. The base load that runs through the holidays, servers, comms, refrigeration, ventilation and hot water, is the floor the array should be built up from, and everything above it has to be justified by storage, export or summer occupancy.

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 Macclesfield roof against the English school year

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 Macclesfield, 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	16	10	6
Feb	15	33	18	15
Mar	21	65	44	21
Apr	12	96	38	58
May	17	112	61	51
Jun	21	112	78	34
Jul	11	110	39	71
Aug	0	93	0	93
Sep	20	71	47	24
Oct	17	42	23	19
Nov	21	24	17	7
Dec	15	15	7	8
Year	190	789	382	407

Per kWp installed, month by month, separating generation while the school is open from generation at a weekend or in the holidays. 75 percent of the Macclesfield 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 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

Cheshire East schools, phase by phase

Cheshire East has 157 open state-funded schools and colleges on the DfE register teaching 57,006 pupils between them. Source: DfE Get Information About Schools.

The split is 126 primary, 23 secondary, 6 special and 2 further education, at an average of 363 pupils a site. That is 5.5 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.

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.

Grid connection through SP Energy Networks / Electricity North West

SP Energy Networks / Electricity North West 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 Cheshire the planning database records 157 solar schemes totalling 582 MW, of which 13 are operational (REPD Q1 2026).

Book the survey

Book a roof survey at your Macclesfield school

We survey school and college roofs throughout Cheshire. 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.

Macclesfield school solar, answered

How much would a school roof near Macclesfield generate?: Modelled at 790 kWh per kWp a year, a 160 kWp array on a Macclesfield school models at about 126,400 kWh. What decides whether that is worth doing is how much of it the school uses itself, not the total. Source: EU PVGIS v5.2, SARAH3, 10 degree pitch, 14 percent system loss.
How does the school year affect a solar scheme in Macclesfield?: It goes somewhere, just not into the timetable. 25.7 percent of the Macclesfield generating year lands in July and August (EU PVGIS v5.2), and a closed school still runs servers, comms, refrigeration and ventilation. What that base load does not absorb is either stored, exported under an agreement with SP Energy Networks / Electricity North West, or a sign the array is too big. We test which before sizing anything.
Which network operator handles the connection at a Macclesfield school?: Applications go to SP Energy Networks / Electricity North West, who run the network across Cheshire. An export-limited offer usually still works for a school, because the summer surplus is the part you were least likely to be paid much for anyway.
What does Cheshire East require for solar on a school building?: Roof-mounted solar on a non-domestic building often falls within permitted development under Part 14 of the General Permitted Development Order, subject to limits on how far the panels stand proud of the roof plane and, above a threshold, to prior approval from Cheshire East on siting and design. Listed buildings and conservation areas are the usual exceptions. We put the position to Cheshire East before a design is finalised.
How many schools are there around Macclesfield?: Cheshire East has 157 open state-funded schools and colleges on the DfE register, with 57,006 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.

Nearby

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