A solar self-consumption project starts with a technical study of your site: area, orientation, shading and roof condition. It determines the expected output, which then lets you size the installation on your consumption and choose the financing method. Here is how to structure the project, from the first studies to commissioning.
How to assess your site's solar potential?
A technical study assesses the expected output from your roof's area, orientation and shading. The roof's condition and its capacity to bear the panels are checked beforehand. This study is the basis of the whole project: without it, sizing and financing rest on assumptions.
How to size and finance the installation?
Size the installation to maximise the self-consumption rate, i.e. the share of output actually consumed on site. Several financing schemes exist: direct investment, third-party financing or leasing. The right choice depends on your cash flow and your horizon.
What solar obligations apply to car parks?
The APER law (acceleration of renewable energy production) requires solar carports on at least 50% of outdoor car parks larger than 1,500 m². The deadline was 1 July 2026 for car parks over 10,000 m², and it is 1 July 2028 for those between 1,500 and 10,000 m². If you manage an outdoor car park of that size, build this obligation into your solar project.
How do connection and monitoring work?
The installation requires connection procedures with Enedis and compliance with applicable standards. Once live, production monitoring lets you check performance and adjust usage toward sunny hours. Any unconsumed surplus can be sold or stored. At Eneffic, we offer solar solutions and supply the complementary electricity: a single point of contact for both production and contract.
The 4 steps of a solar project
Potential study
Area, orientation, shading and roof condition.
Sizing and financing
Maximise self-consumption and pick the right financing scheme.
Enedis connection
Administrative procedures and compliance with current standards.
Commissioning and monitoring
Production monitoring and surplus valorisation.
Key takeaways
The technical study comes first
Area, orientation, shading and roof condition determine the potential.
Sizing follows your consumption
Aim for a high share of output consumed on site and the right financing scheme.
The surplus has several destinations
Electricity not consumed on site can be sold or stored.
