Cut your energy bills for the long term
Self-consumption
Are you a manufacturer, logistics provider or local authority? Mexens designs, finances and operates your turnkey self-consumption solar power plant. Enjoy renewable electricity at a fixed price, generated directly on your premises — with no investment required on your part.
Turnkey project
Fixed-price electricity
No investment required
Photovoltaic self-consumption: produce the energy you use
Photovoltaic self-consumption consists of producing renewable electricity on your own site — rooftop, parking canopies, or ground-mounted installations — and consuming it directly within your facilities. It is a cost-effective, strategic, and environmentally responsible choice for any company or local authority looking to control its energy costs.
The principle is simple: Mexens finances, builds, and operates a solar plant directly connected to your electrical installation. The electricity produced powers your equipment in real time. Any surplus can be fed into the grid and sold, generating additional revenue.
Self-consumption does not mean full autonomy: your site remains connected to the grid to supplement your supply when solar production is insufficient (at night or during cloudy days). However, every kWh self-consumed is a kWh you no longer pay to your electricity supplier.
Self-consumption is now relevant across the entire French territory. The cost of photovoltaic electricity production has fallen by more than 90% over the past decade, while market electricity prices continue to rise. Grid parity has now been reached throughout France.
Key points on self-consumption with Mexens
Whether you want to reduce your energy bills, secure your energy supply or strengthen your commitment to corporate social responsibility, our self-consumption solution can be tailored to your specific needs and the layout of your site.
No investment required on your part
Third-party investment
Electricity at a stable and competitive rate throughout the contract period
Fixed price
Roof, shade structure, ground-level park or a combination of both
Made to measure
Comply with the requirements of the Energy and Climate Act and the APER
Regulatory compliance
The benefits of self-consumption of solar power for your business
Economical
Cut your electricity bill by 10–30% from the very first year.
Every kWh you generate and use on-site is a kWh you no longer have to pay your supplier for.
Mexens guarantees you a fixed, competitive rate for the entire duration of the contract, protected from market price rises.
Strategic
Secure your energy supply and gain independence from market fluctuations.
Controlling your energy costs means controlling your competitiveness and the future of your business. Your electricity costs are locked in for 20 to 30 years.
Sustainable
Play an active part in the energy transition by using low-carbon, locally generated electricity.
Strengthen your CSR policy and communicate your commitment to your employees, customers and partners.
Regulatory compliance
The Energy and Climate Act requires new buildings larger than 500 m² to have a photovoltaic roof covering at least 30% of their footprint.
The APER Act requires photovoltaic carports to be installed in car parks larger than 1,500 m².
Self-consumption allows you to meet these requirements whilst maximising the value of your property.
A range of options
for your project
Self-consumption is not limited to a single type of installation.
Depending on the layout of your site, Mexens can offer you the most suitable solution — or a combination of several options:
Option 1: Solar roof
Make the most of the roof space on your buildings (warehouses, factories, offices) to install a solar power system. Ideal for large-scale consumers with extensive roof areas.
See our photovoltaic roofing solutionOption 2: Car park canopy
Turn your car park into a source of green energy. Carport canopies protect vehicles and users whilst generating the electricity consumed on site. Compliance with the APER Act included.
See our solar-powered car park shade solutionOption 3: Combined roof and shade sail configuration
Maximise your installed capacity by combining rooftop panels and shade structures at the same site. This setup allows you to optimise your self-consumption rate and meet a larger proportion of your electricity needs.
Option 4: Outdoor playground
If you have an unused plot of land or a derelict site, a ground-mounted solar park can supply your site for self-consumption or complement a rooftop installation.
See our solutions for ground-mounted or floating solar farmsMexens takes care of every aspect of your self-consumption project
From the feasibility study to the delivery of the first kWh, we’re with you every step of the way.
You don’t have to worry about a thing.
Analysis of your electricity consumption (pattern, baseline, peaks), available space (roof, car park, land) and your site’s solar potential. Design of the solar installation and assessment of the connection.
Planning permission, prior notification, Enedis declaration, self-consumption agreement — Mexens takes care of all the formalities.
Mexens invests on your behalf (third-party investment). You pay only for the electricity you use, at a rate that is lower than the market rate and remains stable over time.
Installation of the panels, inverters and monitoring system. Connection to your site’s electricity grid and commissioning of the power plant.
Operational and financial management of the power station throughout the duration of the contract. Mexens has its own technical teams for preventive and corrective maintenance, and monitors performance in real time.
As a member of Soren, Mexens handles the collection, transport and recycling of end-of-life panels.
Photovoltaic self-consumption: are you eligible?
Self-consumption is aimed at any business customer with a suitable surface area (roof, car park or land) and significant electricity consumption.
Contact us for a free quoteRelevant profiles
Industrial
Logistics / cold storage warehouse
Shopping centre
Community
Educational or sports facility
Farmer
Transport company
Technical requirements
To have a roof, car park or plot of land
To have a significant electricity consumption
Discover our self-consumption productions
With over 1,200 projects in operation across France, Mexens supports manufacturers, local authorities and farmers in achieving sustainable reductions in their energy bills through self-consumption.
Why choose Mexens for your self-consumption project?
Nous contacterOur expertise
With over 1,200 projects in operation and 800 MWp of installed capacity, Mexens is your single point of contact from the feasibility study right through to the operation and maintenance of the power plant. A single point of contact and a single point of responsibility throughout the duration of the contract.
Our integrated know how
Mexens has in-house multidisciplinary expertise in development, design, finance, legal affairs, procurement, operations and maintenance. Our expertise across the entire value chain ensures the quality, responsiveness and long-term reliability of your facility.
Our commitment to the local community
Mexens, an independent French energy producer founded in 2008, supports local stakeholders in their energy transition. Our team is dedicated to renewable energy projects tailored to local potential.
Frequently asked questions about self-consumption of solar power
Photovoltaic self-consumption involves generating electricity using solar panels installed on your premises and using it directly on-site. Any surplus electricity not used can be fed into the grid and sold back to the grid operator.
Savings depend on your installed capacity, your consumption profile and the amount of sunlight your site receives. On average, businesses reduce their electricity bills by 10 to 30 per cent. With Mexens, you benefit from a fixed, competitive rate for the entire duration of the contract.
A site is well suited to self-consumption if it meets three criteria: sufficient available space (roof, car park or land), significant and consistent electricity consumption, and activity that takes place mainly during the day or a constant baseline consumption (refrigeration, industrial processes). Our teams will carry out a free assessment to evaluate your site’s potential.
With Mexens, there’s no upfront investment required. Mexens finances, builds and operates the solar power plant on your site. You pay only for the electricity you use, at a rate below the market price.
Mexens invests on your behalf and generates revenue from the sale of electricity. You provide the space (roof, car park, land); Mexens finances, builds and operates the power plant for the entire duration of the contract.
Your property remains connected to the national grid. When solar generation is insufficient (at night or on overcast days), you are supplied with electricity as normal by your energy supplier. Self-consumption reduces your reliance on the grid but does not eliminate it.
A high-quality, well-maintained solar panel can have a useful life of over 30 years. Mexens provides maintenance for the power plant and replaces faulty equipment throughout the duration of the contract.
Yes, depending on the power output and configuration, a planning permission application or a prior notification may be required. Mexens handles all the administrative procedures.
Yes. Self-consumption is particularly beneficial when combined with EV charging points. Electricity generated on-site can power your charging points directly, reducing the cost of charging your fleet or your visitors’ vehicles.
Individual self-consumption supplies a single site. Collective self-consumption allows the energy generated to be shared among several buildings or consumers located nearby. Mexens supports you with both setups.
Do you have any other questions?
Contact our teamsAre you planning a solar power self-consumption project?
Do you have a project, an idea or need some advice? Our development managers are here to help and will assess the feasibility of your solar self-consumption project free of charge.
Everything you need to know about self-consumption of solar power
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