Are you considering installing solar panels to generate your own electricity? That’s an excellent idea for reducing your bills and participating in the energy transition. But once the electricity is produced, what do you do with the surplus or the entire output? This is where the purchase obligation comes in, an essential mechanism for valuing your production. This article guides you through the steps and conditions for connecting your installation and selling your electricity, particularly via the Enedis purchase obligation scheme.

Key Points to Remember

• The Enedis purchase obligation allows you to sell electricity produced by renewable installations at a guaranteed tariff for 20 years, thus supporting the development of green energy.
• To benefit from the purchase obligation, your installation’s power output must generally not exceed 100 kWp and it must be installed by a certified professional.
• You have the choice between selling the surplus of your production or the entire output. Selling the entire output often offers better tariffs but may involve additional costs and exclude certain aid such as the self-consumption premium.
• Purchase tariffs are set by the Energy Regulatory Commission (CRE) and reviewed quarterly, varying according to the installation’s power output and the type of contract (surplus sale or total sale).
• It is crucial to submit your purchase contract request before your installation is commissioned; the contract takes effect on the day of commissioning, and payments are generally made annually after meter readings.

Understanding the Enedis Purchase Obligation

The purchase obligation is somewhat the cornerstone supporting the development of renewable energies in France, particularly photovoltaic solar. Enedis, through its EDF Purchase Obligation structure, plays a central role in this scheme. It is a public service mission. The idea is that designated buyers, such as EDF OA, commit to buying back the electricity you produce with your solar installation. This buy-back is done at a tariff set by public authorities and guaranteed over a long period, generally 20 years. It’s a concrete way for the State to encourage citizens and businesses to invest in clean energy solutions and build a more sustainable future. Without this buy-back guarantee, it would be much more difficult to make an investment in solar panels profitable. It is therefore an essential mechanism for making renewable energy projects financially attractive and accessible to all. The objective is clear: to accelerate the energy transition by making green electricity production economically viable for the greatest number.

Definition of the photovoltaic purchase obligation

The photovoltaic purchase obligation is a regulatory framework that requires certain energy stakeholders to buy electricity produced by installations using the sun as an energy source. These installations can vary in size, from small systems on house roofs to larger solar power plants. The price at which this electricity is purchased is set by ministerial decree and periodically reviewed by the Energy Regulatory Commission (CRE). This tariff is guaranteed for the entire duration of the purchase contract, which is generally 20 years. This offers financial security to producers, allowing them to make their initial investment in solar panels and associated installation profitable. It is a major lever for encouraging the deployment of solar technologies in France.

Objectives of the purchase obligation for renewable energies

The purchase obligation was put in place with several clear objectives for the renewable energy sector. Firstly, it aims to support and accelerate the development of these sectors, by making projects economically viable. By guaranteeing a buy-back price for the electricity produced, it reduces financial risk for investors and producers. Secondly, it contributes to the diversification of the French energy mix, by promoting the integration of cleaner energy sources less dependent on fossil fuels. Finally, it participates in the fight against climate change by increasing the share of renewable energies in national electricity production. It is a strategic tool for achieving the environmental objectives set by France and Europe.

The different types of electricity buyers

Within the framework of the purchase obligation, there are mainly two categories of electricity buyers. On the one hand, you have buyers subject to the purchase obligation. These are entities designated by law, such as EDF Purchase Obligation, which are required to buy back green electricity at regulated tariffs. They play a public service role in supporting renewable energies. On the other hand, there are the so-called buyers

Initial steps for your solar project

Before embarking on the installation of solar panels with the aim of benefiting from the purchase obligation, several preliminary steps are necessary to frame your project and anticipate administrative procedures. It is important to clearly define your needs and ensure that your installation site complies with grid requirements.

Defining your project with a professional

To successfully complete your solar project, it is highly recommended to be accompanied by a qualified professional. This professional can be an installer, a design office, an architect or a project manager. This professional, whom you will designate as your authorised representative, will play a key role in compiling your file and liaising with the various stakeholders, particularly Enedis. The mandate is an official document that formalises this relationship and must be submitted with your connection request. Choosing an experienced partner ensures a better understanding of the technical and regulatory challenges, and greatly facilitates the overall process. Calling on an expert allows you to benefit from personalised advice to optimise your installation according to your consumption and electricity sales objectives.

Checking the Enedis service area

It is essential to confirm that your installation is located in an area served by Enedis. Indeed, Enedis manages the electricity distribution network across most of French territory. If your property is in an area covered by a Local Distribution Company (LDC), the latter will be responsible for your connection. A prior check will help you avoid erroneous administrative procedures and direct you to the right contact person from the outset. You can generally perform this check directly on the Enedis website or by contacting their customer service.

Anticipating the purchase contract request

A crucial administrative step is to submit your purchase contract request before your photovoltaic installation is commissioned. This request is generally made in parallel with your electricity grid connection request. Anticipating this step is paramount to ensure that your electricity production can be sold under the purchase obligation from the first day your panels are operational. Good planning ensures you don’t lose potential income and comply with deadlines imposed by regulatory authorities. It is advisable to inquire with EDF Purchase Obligation or your installer to find out the precise terms of this procedure.

The grid connection process

Once your solar project is defined and the initial steps have been taken, the next stage involves connecting your installation to the public electricity grid. This process is managed by Enedis, the electricity distribution network operator in France, which ensures the connection of your site to the existing infrastructure. It is important to understand the different phases to best anticipate deadlines and requirements.

Submitting a connection request

The first concrete action is to submit a connection request to Enedis. This file must contain all information relating to your project, including the location of the installation, its power output, and the type of purchase contract envisaged (total sale or sale of surplus). It is often advisable to call on a professional for this step, as a well-informed request greatly facilitates the subsequent operations. A well-prepared connection request is the key to a smooth process.

The role of the authorised representative in the process

To simplify your procedures, you can designate an authorised representative. This professional, who may be your installer, a design office or an architect, will act on your behalf with Enedis. They will compile the connection file, monitor its progress and coordinate the necessary works. The mandate is an official document that formalises this representation. Calling on an authorised representative saves time and avoids administrative errors, especially if you are not familiar with these procedures. The connection of your electricity meter to the grid can take several months, so it is useful to have a dedicated contact person to monitor this essential process.

Specifics of connection for total sale

If you opt for the total sale of your electricity production, specific conditions apply to the connection. Unlike self-consumption with sale of surplus, where a single meter (often Linky) is sufficient, total sale requires the installation of a second meter. This production meter is used to measure the electricity you inject into the grid. Furthermore, connection costs for total sale may be slightly different and are generally at your expense, unlike certain cases of surplus sale where Enedis may cover part of the costs. It is important to be well-informed about these differences to anticipate expenses and technical constraints. The choice between surplus sale and total sale will have a direct impact on purchase tariffs and any additional aid you may receive, such as the self-consumption premium which is not compatible with total sale.

It is important to note that the network operator, Enedis, is responsible for distribution across most of French territory. If your project is located in an area served by a Local Distribution Company (LDC), the latter will manage your connection.

Choosing between selling surplus and total sale

When you install solar panels, you have a choice between two sales methods for the electricity you produce: selling only the surplus or selling the entirety of your production. This choice has significant implications for purchase tariffs, necessary equipment, and the aid you can claim.

Impact of choice on purchase tariffs

It is important to note that purchase tariffs are not identical depending on whether you opt for selling the surplus or total sale. Generally, tariffs are more advantageous if you choose to sell the entirety of your photovoltaic electricity production. However, this option may incur additional connection costs, which are generally covered by Enedis if you opt for selling the surplus. You must therefore carefully weigh the pros and cons to optimise the profitability of your installation.

Differences relating to meters and installations

The chosen sales method directly influences the type of meter to be installed. If you opt for self-consumption with sale of surplus, a single meter, usually the Linky meter, is sufficient. This meter measures both the electricity you consume and that which you reinject into the grid. Conversely, if you decide to sell the entirety of your production, you will need to install a production meter in addition to your usual consumption meter. This second meter specifically measures all the electricity generated by your solar panels before it enters the public grid.

Consequences for additional aid

Your decision regarding the sale of your electricity also has repercussions on available financial aid. For example, the photovoltaic self-consumption premium is conditional on the sale of your surplus production. If you choose total sale, you will not be able to benefit from this premium. It is therefore essential to be well-informed about the different aid schemes and to check your eligibility based on your choice. Understanding grid connection conditions is also a key step in evaluating the overall cost of your solar project [5e48].

The choice between selling the surplus or the entirety of your solar production will depend on your personal objectives and your situation. It is recommended to carefully analyse the financial and technical implications of each option before making your decision. A good understanding of selling solar energy [9a09] will help you make the best choice for your installation.

Photovoltaic electricity purchase tariffs

The tariff at which your solar electricity is purchased depends on several factors, including the power output of your installation and the type of contract you choose: sale of surplus or total sale. Generally, the higher the power output of your installation, the more the tariff per kilowatt-hour (kWh) is degressive. It is important to note that the total sale of your production benefits from more advantageous purchase tariffs than the sale of surplus.

These tariffs are not fixed; they are reviewed quarterly by the Energy Regulatory Commission (CRE). This regular update allows remuneration to be adapted to market and technology developments. For example, for installations whose connection is effective in the third quarter of 2025, tariffs vary as follows:

Installation Power Output	Purchase Tariff (sale of surplus)	Purchase Tariff (total sale)
≤ 3 kWp	€0.04	€0
≤ 9 kWp	€0.04	€0
≤ 36 kWp	€0.0731	€0.1243
≤ 100 kWp	€0.0731	€0.1081

These amounts are indicative and valid for the specified period. To find out the latest tariffs and any premiums associated with self-consumption, it is advisable to consult the official publications of the CRE or specialised websites in the photovoltaic sector.

The purchase contract takes effect on the day your installation is commissioned. However, to be remunerated, you must have finalised and signed your contract. Invoicing and payment are generally made once a year, on the anniversary date of commissioning. It is your responsibility to read your meters and submit your invoice via your personal space. It is after verification that the obligated buyer, such as EDF OA, proceeds with payment.

The choice between selling the surplus and total sale has direct implications for purchase tariffs, necessary equipment (meters) and eligibility for other aid such as the self-consumption premium. Total sale may also incur additional connection costs.

Payment and invoicing terms

Once your purchase contract is signed and your solar installation is commissioned, it is important to understand how you will be remunerated for the electricity you sell. The effective date of your contract is crucial, as it marks the beginning of the sales period. Generally, this date corresponds to the actual commissioning of your installation. For example, if your panels are operational on 15 May, your contract will begin on that date.

The payment frequency is generally annual. This means that once a year, on the anniversary date of your contract, you will receive payment corresponding to the quantity of electricity sold over the past period. It is important to note that for these payments to be made, your contract must be finalised and signed. Without a valid contract, no remuneration can be paid.

To receive your payments, you will have steps to take each year. You will need to read the production and consumption meters, then generate your invoice online. These operations are generally carried out via your personal space on the buyer’s website, such as EDF OA. Once your invoice is submitted and verified, payment will be made according to the terms of your contract. It is therefore advisable to carefully follow the dates and procedures so as not to delay the receipt of your income. You can find all information relating to your contract, including invoicing dates and tariffs, directly on your EDF OA personal space. If you need help, prioritise the contact form for a quicker response.

It is essential to fully understand the invoicing and payment process to optimise the management of your solar project. Clear communication with your buyer is key to a smooth experience.

Here is an overview of the key steps for invoicing:

• Meter reading: Annually, on the anniversary date of your contract.
• Invoice generation: Via your personal online space.
• Verification by the buyer: EDF OA or another buyer verifies the information.
• Payment: Made according to contractual terms.

The choice between selling the surplus and total sale can influence purchase tariffs. For example, for an installation of less than 3 kWp, the surplus sale tariff is €0.04/kWh, while total sale is not remunerated in this case. For larger installations, such as those between 36 and 100 kWp, total sale offers a more advantageous tariff (€0.1081/kWh) than surplus sale (€0.0731/kWh). These tariffs are reviewed quarterly by the Energy Regulatory Commission (CRE). It is therefore important to stay informed of developments to optimise your solar project. The purchase contract request can be initiated by yourself or by your installer, often via the Enedis Connect portal, by selecting the option to benefit from the Purchase Obligation. Making your contract request is an important step to secure your remuneration.

Eligibility criteria for the purchase obligation

To benefit from the purchase obligation, your photovoltaic solar installation must meet several specific conditions. It’s not just any installation, but specifically those that produce electricity from the sun. Solar thermal systems, for example, which aim to heat water, are not covered by this scheme.

The obligated buyer, such as EDF OA, commits to buying back the electricity you produce but do not consume directly. This mechanism aims to encourage the development of renewable energies in France. It is important to note that not all producers can automatically claim this aid. There are specific thresholds and conditions to be met.

Power output limitation for installations

One of the main conditions concerns the power output of your photovoltaic installation. Installations whose power output exceeds 100 kilowatt-peak (kWp) are generally not eligible for the purchase obligation. This ceiling aims to direct the scheme towards smaller installations, often residential or for small businesses. It is therefore essential to size your project upstream to ensure its compliance with eligibility criteria.

Necessity of using a certified installer

To guarantee the quality and safety of your installation, as well as to validate your eligibility for the purchase obligation, it is often required to use a certified professional. The RGE (Recognised Guarantor of the Environment) certification is generally requested. This certification attests that the installer complies with strict quality standards and is qualified to carry out energy efficiency works or renewable energy installation. Choosing a certified installer is a key step for the success of your project and to be able to claim state aid, including the purchase obligation. You can find qualified professionals in dedicated directories.

Conditions relating to the contract request

The purchase contract request must be made before the start of installation works. A complete file must be submitted to the obligated buyer. This file will include technical information about your installation, as well as administrative data. Meticulous preparation of this file is important to avoid any delay or complication in the process. You will need to provide details on the location of your installation, its power output, and the desired purchase contract type (sale of surplus or total sale). The information required for a grid connection request is detailed in a specific document administrative and technical details.

The decree of 6 October 2021 specifies the terms for benefiting from the purchase obligation, covering both the sale of the entirety of the electricity produced and self-consumption with sale of surplus. It is therefore important to refer to the regulations in force to ensure the compliance of one’s project.

It is possible to either sell the surplus of your electricity production or the entirety of it. The choice between these two options will have implications for purchase tariffs and potentially for other aid you might receive, such as the self-consumption premium. It is advisable to carefully study these aspects before finalising your purchase contract.

The role of electricity grid stakeholders

For your solar project to function correctly and for the electricity produced to be managed, several stakeholders come into play. It is important to understand their functions to fully grasp the process.

Operation of the balance responsible party

The electricity grid is a complex system that requires a constant balance between electricity production and consumption. If this balance is not maintained, it can lead to outages. This is where balance responsible parties come in. These are authorised entities that ensure that the quantity of electricity produced matches the quantity consumed. They are remunerated if the balance is respected and penalised in case of imbalance. Brokers or banks can assume this role. If you opt for an Access and Operation Contract (AOC) with Enedis, you will need to sign a Balance Perimeter Attachment Agreement (BPAA) with a balance responsible party. If you choose the Single Injection Contract, the electricity buyer will handle this procedure.

Contractual agreements with balance responsible parties

The choice of purchase contract directly influences your obligations towards balance responsible parties. Here are the main scenarios:

• Access and Operation Contract (AOC) with Enedis: You must sign a Balance Perimeter Attachment Agreement (BPAA) with a balance responsible party. This contract concerns grid access.
• Single Injection Contract (SIC) with a buyer: The electricity buyer directly manages the contract with the balance responsible party.
• Self-Consumption Without Injection Agreement (SCWIA): In this case, you do not need to contract with a balance responsible party, as you consume all your production.

Intervention of the electricity supplier

Once your electricity has been produced and purchased, the electricity supplier takes over. Their role is to market this electricity to end consumers, whether individuals or businesses. They manage all contractual relationships with these consumers, from signing the supply contract to invoicing, including customer service. Enedis, for its part, is the public electricity distribution network operator across 95% of French territory, ensuring the connection of installations and network maintenance. It is important to check if your project is located in an area served by Enedis or by a Local Distribution Company (LDC) check the Enedis service area.

The smooth operation of your solar project depends on good coordination between all these stakeholders. Understanding their respective roles will help you better manage your process.

Contacting and managing your EDF OA contract

Once your solar installation is operational and your purchase contract is signed, it is important to know how to interact with EDF OA for the management of your production. Whether you have questions about your payments, modifications to make, or simply need information, here are the preferred channels and some tips for effective communication.

Preferred use of the contact form

For any specific request concerning your contract, the most direct and often quickest way is to use the contact form available on the EDF OA website. By providing key information such as your contract number, the power output of your installation, and your postcode, you enable their teams to process your request in a personalised manner. It is also the ideal channel for attaching supporting documents if necessary. Prioritising this written method helps to avoid telephone waiting times and ensures a record of your exchanges.

Information available in your personal space

Your personal online space is a wealth of practical information. You will find all the details relating to your purchase contract there, such as the sales tariff applied to your electricity, the amount of your self-consumption premium if applicable, and the provisional invoicing dates. It is advisable to regularly consult this space to monitor the progress of your file and stay informed of the financial aspects of your solar project. It is an excellent resource for autonomous management of your contract.

Tips for quick processing

To speed up the processing of your requests, ensure that all information provided is complete and accurate. If you contact EDF OA by telephone, prepare your contract number and note the details of your request before the call. If you use the form, be as precise as possible in your description. Good preparation of your approach ensures better responsiveness from customer service. Remember that the clarity of your request is the key to effective resolution. For connection procedures, it is also useful to check the service area of your project to know who to contact first find out more about the procedures.

The management of your purchase contract with EDF OA requires clear communication and the use of the right channels. The contact form and your personal space are your best allies for effective monitoring of your solar electricity production and associated payments.

Financial benefits of the purchase obligation

The purchase obligation represents an interesting opportunity for those investing in photovoltaic installations. It not only allows you to make your initial investment profitable more quickly, but also to generate additional income in the long term. By choosing to sell your electricity production, you optimise the use of your installation and contribute to the energy transition.

Making the investment in solar panels profitable

The acquisition of solar panels constitutes a significant investment. While the reduction in your electricity bills through self-consumption is the primary benefit, selling your surplus or total production significantly accelerates the return on investment. This allows you to recover the invested sums in your solar project more quickly.

Earning income through electricity production

Once your initial investment is amortised, the electricity you sell transforms into a regular income. This income can be reinvested in the maintenance of your installation, its expansion, or any other expense according to your needs. It is a concrete way to value your commitment to renewable energies.

Optimising your solar project according to your needs

The choice between selling the surplus and total sale of your production has direct financial implications. Purchase tariffs are generally more advantageous for total sale, but this may incur additional connection costs and excludes you from certain aid such as the self-consumption premium. It is therefore important to carefully evaluate your needs and objectives to make the most suitable choice for your situation. For example, if you consume a large part of your production, selling the surplus with the self-consumption premium may be more interesting. To find out more about the different options, you can consult the information available on EDF OA.

Here is an overview of the main differences:

• Sale of surplus: You consume the electricity produced and sell the rest. You can benefit from the self-consumption premium. Connection costs are generally covered by Enedis.
• Total sale: You sell all your production. Purchase tariffs are often higher, but you cannot benefit from the self-consumption premium. An additional production meter is required.

The choice of your sales method must be carefully considered based on your actual consumption and the aid you wish to claim. A personalised analysis of your project is recommended.

The purchase obligation can make you money. It’s a simple way to make your solar installation profitable. You sell your surplus electricity at a fixed price, which ensures a regular income. It’s a good deal for your wallet! To find out more about how this measure can help you, visit our website.

In summary: your solar project and the purchase obligation

So, we’ve covered everything you need to know about the purchase obligation for your solar project. Basically, it’s a boost from the State to make producing green energy more financially attractive. Whether you sell the surplus or the total of what your panels produce, there are specific tariffs and procedures. Don’t forget to clearly define your project, choose a qualified installer, and most importantly, submit your contract request before everything is connected. It’s a bit of paperwork, but it’s worth it to make your installation profitable and participate in a greener future. If you still have doubts, don’t hesitate to consult the mentioned resources or ask a professional for advice.

Frequently Asked Questions

What is Enedis’s purchase obligation?

The purchase obligation is a system set up by the government to help those who produce green electricity, such as from solar panels. Basically, a specialised buyer, like EDF OA, commits to buying your electricity at a fixed price for 20 years. It’s an aid to make producing clean energy more financially attractive.

How do I sell my solar electricity?

To sell your electricity, you must first make a connection request to Enedis. Your installer often handles this. You also need to sign a purchase contract before your installation starts producing. Once all that is done, you will be paid for the electricity you sell.

Do I have to sell all my electricity or just the surplus?

You have the choice! You can either only sell the electricity you don’t consume (the surplus), or sell the entirety of what your panels produce. If you sell all, the purchase price is generally higher, but you will not be able to receive the self-consumption premium. The choice depends on what is best for you.

How are the purchase prices for my electricity set?

Prices change every three months. They depend on the power output of your solar installation and whether you sell all or just the surplus. Generally, the smaller your installation, the higher the price per kilowatt-hour. The Energy Regulatory Commission (CRE) is the one that decides these tariffs.

When will I be paid for my electricity?

You will receive your payment once a year, on the anniversary date of your installation’s commissioning. This is based on what your meter has recorded. You will need to read your meter and generate your invoice on your personal online space.

Who handles the connection of my solar panels to the grid?

Enedis handles the connection in most cases, as they manage the electricity grid across a large part of France. If you are in an area served by another local company, they will handle it. It is advisable to call on a certified professional to help you with these procedures.

What are the conditions for being eligible for the purchase obligation?

To benefit, your solar installation must not exceed a certain power output, generally 100 kilowatt-peak (kWp). It is also mandatory to use a state-certified installer. And most importantly, you must submit your purchase contract request before your installation is commissioned.

How do I contact EDF OA if I have a question about my contract?

The best way is to use the contact form on their website. You can include all necessary information there to get a quick and personalised response. You can also call them, but there’s often a long wait, so prioritise written communication if possible.