Self-consumption: the essentials
Self-consumption means using on site the electricity produced by a solar plant installed on a public building, and feeding the surplus to the grid. The roof of a school, gymnasium or community hall can supply the building itself.
Who is it for, and for what uses?
It suits municipalities, EPCI and syndicates equipping public buildings with a usable roof: schools, gymnasiums, multi-purpose halls, town hall, technical services. We respond to your tenders; the specifications remain yours.
What it changes for you
The authority produces part of a public building's electricity and makes the most of the surplus fed in. Per-building monitoring lets you report production and consumption to your departments.
Self-consumption with surplus sale, full self-consumption or full sale?
With surplus sale, you consume what you produce first and the rest is fed into the grid, which buys it from you. With full self-consumption, nothing is injected. With full sale, all production is resold.
The choice depends on your daytime consumption and the feed-in tariff in force: we compare the structures on your data before recommending one.
How is the self-consumption rate calculated?
It is the share of production consumed on site. It depends on how well your consumption curve matches solar output: a business that consumes mostly during the day on weekdays reaches a higher rate than a site closed at weekends.
A battery can shift part of the production to the evening, at the cost of extra investment that we price separately.
Which administrative steps?
A grid-connected installation requires a connection request to the network operator (Enedis in most cases), a planning declaration or permit depending on the project, and a purchase contract if you sell the surplus.
We handle the connection and support you on the other formalities.
Our solution
A self-consumption project rests on three elements:
| Criterion | With Eneffic |
|---|---|
| Direct consumption | Solar output used first on site |
| Surplus | Unused energy fed into and sold to the grid |
| Monitoring | Production, consumption and injection tracked in real time |
Thomas's take, our expert
For a public building, I first look at how it is occupied: hours, holidays, evenings. This curve tells how much of the production will really be used on site.
Thomas, Energy expert
Our support
A single contact supports you at every step, from the initial analysis to long-term follow-up.
YOUR PROJECT STEP BY STEP
Consumption-curve analysis
We measure the match between the building's occupation and solar production.
Response to the tender
We submit our offer according to your specifications.
Enedis connection
We handle connection and injection formalities.
Commissioning and monitoring
We track production, consumption and surplus, building by building.
Key takeaways
A plant sized on occupation
The building's consumption curve guides installed capacity.
A valued surplus
Unused energy is fed in and sold.
Per-building monitoring
You report to your departments and elected members.
