Marignane
M7 Real Estate · France
A rooftop solar assessment backed by a full condition survey — drone-mapped, walked, and confirmed structurally sound before design began.
1,791 kWp
PV capacity
3,445
Panels, 1 roof
2.4 GWh
Generation / yr
7–10%
IRR range
Part of our portfolio strategy for M7 Real Estate. Marignane and Acre Road in the UK are the two assets we examined up close.
Solar Array Design
3,445 panels, one roof
The full array fits within the available roof area, subject to detailed design and a structural assessment.
LONGi ~520W
Panel, high-efficiency series
Solis
Commercial string inverter, ~98.8% efficiency
1,791 kWp
proposed system capacity
Roof Condition
Good condition, no remedial works required
Both roof areas were assessed by drone externally and walked internally. The structure is sound and supports progressing straight to detailed design.
The Numbers
Low vs. high consumption scenario
Actual consumption data wasn’t yet available, so TI modelled both ends of a realistic range — Both scenarios return 7–10%; the more of the power the tenant uses, the higher the return.
Both scenarios: 1,791 kWp capacity · 2.4 GWh generated / yr · £2.75M–£2.95M CapEx
85%
Performance ratio
1,582 kWh/kWp
P90 annual yield
0.5%/yr
System degradation
£0.15/kWh
Tenant electricity value
Our Process
Where the project stands
1
Site Survey
Complete
Roof walked and drone-mapped for condition and capacity.
2
Design & Modelling
Complete
Array layout sized and P90 yield modelled.
3
Detailed Design
Next step
Structural sign-off and full engineering package.
4
Installation
Future phase
Panels, inverters and metering commissioned.
Don't guess at what a roof can carry
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