Embarking on photovoltaic tenders can seem complicated, especially when it comes to understanding the figures. The completion rate, for example, is important data. We will look together at how to decipher this information to better understand the results of these tenders and what it means for solar projects.

Key Takeaways

• The completion rate measures the proportion of photovoltaic projects that are actually built following a tender, compared to those that were selected.
• Understanding the different tender procedures and selection criteria, such as price, is essential for evaluating a project’s competitiveness.
• Several factors can influence the completion rate, including eligibility conditions, required professional qualifications, and technical constraints.
• Regular project monitoring and analysis of grid connection requests help optimise the completion rate.
• New sustainability requirements, such as the carbon footprint of modules, play an increasing role in the selection and completion of photovoltaic projects.

Understanding the completion rate in photovoltaic tenders

The completion rate, in the context of tenders for photovoltaic solar energy, represents the proportion of projects that, once selected, are actually implemented and connected to the grid. It is a key indicator for evaluating the effectiveness of the selection process and the ability of developers to bring their projects to fruition. Understanding this rate is therefore essential for anticipating the real growth of the solar fleet and for adjusting support policies.

Definition and importance of the completion rate

The completion rate is calculated by comparing the number of projects actually built and operational with the number of projects initially successful in a tender. A high completion rate indicates a well-calibrated tender process, where the proposed conditions are attractive enough for developers to complete their installations. Conversely, a low rate can signal difficulties encountered by successful bidders, whether financial, regulatory, or technical. It is important to note that simplified tenders, such as those concerning installations from 100 to 500 kWp, aim to reduce administrative complexity, which should, in theory, favour a better completion rate compared to older procedures. The analysis of grid connection request volumes is an important step in monitoring project completion.

Key performance indicators for PV projects

Beyond the completion rate, several other indicators allow for the evaluation of the overall performance of photovoltaic projects resulting from tenders. These include:

• The weighted average price of successful bids: This reflects market competitiveness at a given time.
• The volume of installed capacity: This measures the production capacity actually deployed.
• The commissioning time: This indicates how quickly projects become operational after selection.
• The subscription rate: This represents the proportion of the volume put into play in a tender that actually received bids.

These metrics, analysed jointly, offer a more complete vision of the solar sector’s dynamics. For example, an increase in the price of successful installations between 2021 and 2023, as observed, can influence developers’ ability to complete their projects and thus impact the completion rate.

Objectives and challenges of the completion rate

The main objective behind monitoring the completion rate is to ensure that public policies supporting solar energy achieve their goals in terms of developing renewable production capacities. A low completion rate can lead to under-utilisation of allocated budgets and a delay in achieving national energy transition objectives. It is therefore essential that eligibility conditions and competitive mechanisms are sufficiently stable and predictable to encourage long-term investments. Sustainability requirements, such as the carbon footprint of modules, add a layer of complexity that can also influence the ability of projects to be completed, requiring particular attention during project design and selection. The eligibility conditions set by the Energy Regulatory Commission (CRE) are a determining factor for project success, as shown by the eligibility conditions for the simplified tender.

The analysis of past tenders, whether simplified or older, allows for the identification of trends in completion rates. This historical data is valuable for understanding the factors that favour or hinder the completion of solar projects and for adapting future award procedures.

Analysis of competitive mechanisms

To properly understand the results of a photovoltaic tender, one must first grasp how these competitions are organised. It’s not just a matter of who offers the lowest price; several elements come into play to determine which projects will be selected. Procedures vary, and knowing the rules of the game is the first step to correctly evaluating the completion rate.

The different tender procedures

Tenders for photovoltaic projects are not all identical. They can differ according to the size of the installations, their location (on buildings, on the ground) or even the technology used. For example, simplified tenders, such as those for installations from 100 to 500 kWp, operate on a competitive basis where only the most advantageous bids are selected. This is a change from older procedures that operated with a wider opening window. It is therefore important to correctly identify the procedure that corresponds to your project to anticipate expectations.

• Simplified tenders (100-500 kWp): Direct competition, selection of the best bids.
• Tenders for buildings > 500 kWp: Specific procedures for large rooftop installations.
• Ground-mounted tenders > 500 kWp: Competition for large-scale ground-mounted projects.
• Self-consumption tenders: Support for projects aiming for collective or individual self-consumption.

Bid selection criteria

The main criterion for project selection in most tenders is price. Candidates submit a price bid, and those offering the lowest tariffs are generally favoured. However, in the event of a tie on price, other factors such as the order of bid submission may come into play. It is therefore essential to prepare your application thoroughly and submit it within the allotted time. The clarity and precision of the bid are paramount to standing out.

The competitiveness of a bid often comes down to details. A well-calculated price, but also an impeccable presentation of the application, can make the difference.

Called volumes and their impact

Each tender period defines a maximum power volume (in MWp) that will be supported. This volume is a determining factor. If the number of projects submitted exceeds the available volume, only the most competitive will be selected. Conversely, if the volume is not reached, this may indicate a lack of interest for the period or overly restrictive conditions. Understanding these volumes allows for an assessment of competitive pressure and an adjustment of strategy. For example, for the first period of 2025, a volume of 192 MWp was announced, which gives an idea of the market’s capacity for this period. It is important to monitor the evolution of these volumes to anticipate future trends and adapt one’s application strategy, taking into account photovoltaic development objectives. The analysis of called volumes is therefore a key component for understanding the project completion rate, as it directly influences the number of potential successful bidders. It should be noted that the kilowatt-peak (kWp) is an essential measure for comparing quotes and correctly sizing solar installations. Sunshine conditions and site characteristics play an important role in solar panel yield, as does regional weather. Advanced tools can help calculate the ideal system power and choose the best configuration for optimal return on investment, based on consumption history and demographic projections. Market offers, whether for electricity or gas, show an upward trend, particularly among alternative suppliers, which can influence the dynamics of tenders.

Evaluating project competitiveness

To properly understand the results of a photovoltaic tender, one must examine the competitiveness of the submitted projects. It’s not just a matter of who offers the lowest price, even if that is a major factor. It involves analysing how projects position themselves against each other and how they meet the organisers’ expectations.

Price is often the determining criterion in project selection. In most procedures, the price proposed by the developer for the purchase of electricity is the only element taken into account. Candidates freely set this price, but it must remain below a ceiling defined by the organising authority. For example, for certain periods, this ceiling was set at €95/MWh. A bid lower than that of its competitors, while respecting this ceiling, significantly increases the chances of being selected. It should be noted that bids are ranked in ascending order of price, and successful bidders are selected until the total tender volume is reached. In the event of a tie on price, the order of submission of applications can make the difference.

Examining the weighted average prices (WAP) of successful projects over different tender periods provides a clear idea of the market’s evolving competitiveness. The WAP is calculated by weighting the price of each bid by the associated project’s power. This allows for a general trend to be identified regarding the tariffs at which projects are actually contracted. Observing the evolution of this WAP helps anticipate expected price levels in future consultations and adjust one’s own pricing strategy. For example, a constant decrease in the WAP over several periods suggests increased technological maturity and more intense competition.

To evaluate the competitiveness of your own project, it is useful to compare it with bids that were successful in previous periods. This involves looking not only at the proposed price but also at other aspects that may have played a role, even if they are not directly scored. For example, the quality of financial guarantees, the developer’s solidity, or the relevance of the project’s location can influence the final decision, especially in the case of very close bids in terms of price. It is also interesting to note the diversity of actors who succeed in these tenders; a fairly varied competitive landscape is observed, with many parent companies involved, which testifies to the attractiveness of the renewable energy sector.

The analysis of weighted average prices and comparison with past competitive bids are key steps to refine one’s submission strategy and maximise chances of success in photovoltaic tenders.

Factors influencing the completion rate

Several elements can affect the completion of photovoltaic projects following their selection in tenders. Understanding these factors is essential to anticipate difficulties and optimise chances of success.

Impact of eligibility conditions

The criteria defined in each tender play a decisive role. They may concern the maximum or minimum power of installations, geographical location, or specific requirements related to innovation or sustainability. For example, a project that does not precisely meet a power constraint or a carbon footprint requirement could be rejected, even if it is economically attractive. It is therefore crucial to carefully read the specifications and ensure that the proposed project is in perfect alignment with these requirements from the outset. A misinterpretation or underestimation of these conditions can lead to non-completion.

Role of professional qualifications

The qualification of companies responsible for design, installation, and maintenance is another important lever. Tenders often require specific certifications, such as QualiPV qualification for installers. These qualifications attest to technical expertise and compliance with current standards. A lack of qualification can not only lead to the rejection of a bid but also compromise the quality and safety of the installation if the project is carried out without the required skills. Selecting a qualified partner is therefore a key step to ensure the successful completion of the project.

Influence of technical and regulatory constraints

Technical and regulatory aspects constitute a significant part of the challenges to be overcome. This includes, for example, grid connection times, which can sometimes prove longer than expected, or administrative complexities related to planning permissions. Additional connection costs, if they exceed a certain threshold set by the tender (e.g., €0.25/Wp), can also make a project unviable. Similarly, obtaining a certificate of conformity signed by an approved body is a mandatory step before signing the remuneration supplement contract. Compliance with completion deadlines, generally set at 34 months after the successful bidder’s designation, is also critical. Non-compliance with these deadlines can lead to a reduction in the contract duration or the forfeiture of the financial guarantee. It is also important to consider the specificities of the local microclimate which can impact energy production, as mentioned in studies on solar energy production [5fce].

Reasons for non-completion accepted by the authorities may include:

• Cancellation or withdrawal of planning permission.
• Significant additional connection costs.
• Excessive connection delays.

It is essential to conduct a thorough feasibility study, taking into account all these technical and regulatory constraints, in order to assess the real viability of the project and anticipate any potential obstacles to its completion. Good planning and proactive management of administrative procedures are necessary to maximise the chances of success. Profitability analysis will also strongly depend on local sunshine and panel orientation [9d42]. For projects aiming for total electricity resale, professional certification is required [4e4a].

Monitoring and optimising the completion rate

Once your project has been declared successful in a tender, monitoring its completion becomes a key step. It’s not just about building the installation, but about ensuring it meets the commitments made and the deadlines. Rigorous management at this stage helps avoid costly complications and guarantees the obtaining of the remuneration supplement contract.

Project monitoring methods

Monitoring a photovoltaic project that has won a tender involves several concrete actions. First, it is necessary to ensure that all necessary administrative authorisations are obtained on time. Then, the selection of equipment (panels, inverters, structures) must comply with the tender specifications. Work planning, supplier management, and adherence to the construction schedule are also essential. Regular communication with the various stakeholders, including the network operator for connection, is paramount.

Analysis of grid connection request volumes

The analysis of grid connection request volumes is an indirect but important indicator of market dynamics and the ability of actors to bring their projects to fruition. By observing the figures published by network operators, one can assess the pressure on connection capacities and anticipate potential delays. This allows for adjusting one’s own planning and better understanding the competitive context. For example, a sharp increase in requests may signal future saturation of available capacities, impacting connection times for later projects.

Strategies to improve the completion rate

To maximise your chances of success and improve the completion rate of your projects, several strategies can be implemented. Meticulous preparation upstream of the tender is the first step: thoroughly understanding the criteria, anticipating technical and regulatory constraints, and conducting a solid feasibility study. Once successful, forming a competent project team, implementing a risk management plan, and proactive negotiation with suppliers and construction companies are important levers for action. It is also relevant to stay informed of regulatory developments and new procedures, such as those relating to simplified tenders.

The success of a photovoltaic project does not stop at bid submission. Rigorous monitoring and proactive management of the different completion phases are essential to transform a successful application into an operational and profitable installation. This requires flawless organisation and anticipation of potential obstacles.

Here are some key points for good management:

• Detailed planning: Establish a precise schedule with clear milestones for each step (authorisations, procurement, construction, connection).
• Risk management: Identify potential risks (delivery delays, technical problems, regulatory changes) and plan action plans.
• Financial monitoring: Control costs and ensure that funding is secured throughout the project.
• Compliance: Ensure strict adherence to specifications and current standards, particularly through obtaining the certificate of conformity.

Compliance with deadlines is particularly monitored, with a completion period generally set at 34 months after the successful bidder’s designation. Exceeding this deadline can lead to a reduction in the duration of the remuneration supplement contract, or even the forfeiture of the financial guarantee. It is therefore crucial to anticipate and actively manage the progress of work to meet these deadlines, especially in the context of competitive tenders.

The remuneration supplement contract and its implications

Principle of the remuneration supplement

The remuneration supplement (CR) contract is the main support mechanism for projects successful in photovoltaic tenders. It is a 20-year agreement with the State, via EDF Purchase Obligation (EDF OA). This contract aims to guarantee stable remuneration for the electricity produced, by supplementing the market price when it is lower than a reference tariff set during your application. This is a way to secure the profitability of your project, even if market prices fluctuate. This mechanism is often coupled with an aggregation contract for the sale of electricity.

Calculation of the remuneration supplement

The calculation of the remuneration supplement is quite straightforward. You receive the difference between your reference tariff (the one you applied for) and the average market price for the month, after deducting income from capacity guarantees. The general formula looks like this: CR = (Reference tariff – Reference market price) * Eligible volumes. It is important to note that self-consumed production, whether individually or collectively, is not taken into account in this calculation. The reference tariff can be indexed annually to account for the evolution of certain economic indices, as reported in the information on feed-in tariff indexation. There is also a cap on eligible production, calculated in full power operating hours, from which half of the hours where the market price was negative are subtracted.

Steps to obtain the contract

To obtain this contract, several steps are necessary after being designated a successful bidder. You must first apply for connection to the public distribution network, specifying that you wish to benefit from the remuneration supplement contract. This application must be made within three months of your designation. Then, you must enter the reference of your connection case in your personal space, within four months of the same date. Another essential point is the provision of a certificate of conformity, issued by an approved control body. This document proves that your installation complies with the specifications and is a prerequisite for signing the remuneration supplement contract. The project must be completed within 34 months of your designation as a successful bidder. Non-compliance with this deadline may result in a reduction in the contract duration and the forfeiture of your financial guarantee. There are accepted reasons for non-completion, such as the cancellation of planning permission or excessive connection surcharges, which may allow you to avoid these penalties. Successful bidders in tenders benefit from this State support contract.

Understanding self-consumption in tenders

Self-consumption is when you produce your own electricity, often with solar, and consume it directly. In the context of photovoltaic tenders, this takes on a particular dimension, as the State seeks to encourage this practice while controlling public spending. The idea is to promote this sector, especially for local authorities, by proposing specific provisions in tenders. It is about finding a balance so that aid remains sufficient to motivate individuals to become « consumer-actors » of their energy. The development of self-consumption is therefore a key strategy for the State.

Estimating the self-consumption rate

To properly understand self-consumption in a photovoltaic project, you must first know how to estimate its rate. This rate represents the proportion of your solar production that you consume directly on site. Several elements come into play to calculate it.

• Analysis of your consumption: Look at your electricity bills to find out your average daily consumption. You also need to list the electrical appliances you use and their duration of use.
• Consumption profile: Your consumption habits (presence at home, hours of appliance use) are decisive. A household present all day will consume differently from a household where no one is present during the week.
• Installation sizing: The power of your solar panels and storage capacity (if you have a battery) must be adapted to your needs to optimise self-consumption. It is often advisable to include a safety margin of 10 to 20% when choosing the capacity of your storage system, for example. Properly sizing your panels is therefore crucial.

Tools for evaluating self-consumption

Several tools exist to help you evaluate your self-consumption potential. These tools take into account the meteorological data of your region, the power of your installation, and your consumption profile.

• Online simulators: Many websites offer simulators that give you an estimate of the self-consumption rate and potential savings.
• Design assistance software: Professionals use more advanced software that precisely models solar production and consumption over a year.
• Expert advice: Consulting a consultancy firm or a qualified installer can provide you with a personalised and reliable evaluation.

Consumption and production profiles

The way you consume electricity and the way your solar panels produce energy are intimately linked. The goal is to match these two curves as much as possible.

Collective self-consumption, where several consumers group together to share renewable energy production, is a rapidly evolving field. Regulations are evolving to frame these projects, offering new perspectives for local energy production and consumption. Regulations are evolving to adapt to these new models.

• Daytime consumption: If you are at home and use electrical appliances during daylight hours, your self-consumption rate will naturally be higher.
• Energy storage: A solar battery allows you to store excess electricity produced during the day for use in the evening or at night, thus increasing your autonomy and your self-consumption rate.
• Selling surplus: If you do not consume all your production, the surplus can be sold. The decree of 6 October 2021 specifies the conditions for benefiting from the purchase obligation, which includes the sale of all production or self-consumption with sale of the surplus. The purchase conditions are clearly defined.

Understanding these mechanisms is essential to optimise your photovoltaic project within the framework of tenders.

History of tenders and evolution of the completion rate

To fully grasp the current figures, we need to look back a little. Photovoltaic tenders have changed a lot over the years, and this has directly influenced the completion rate of projects. Before 2021, the landscape was different. There were simplified tenders, often focused on more modest capacities, such as those targeting building-mounted installations between 100 and 250 kWp. There were also broader tenders, sometimes multi-sector, which could concern installations over 250 kWp, and even competitions combining photovoltaic and wind power. The completion rate at that time depended heavily on the specific conditions of each tender.

Simplified tenders and their specificities

Simplified tenders, as their name suggests, aimed to reduce administrative complexity. They were often associated with open schemes, where any installation meeting the criteria was accepted. This contrasted with more recent procedures that favour competition. For example, the simplified tender for building-mounted installations from 100 to 500 kWp, launched from September 2025, replaces the old tariff order S21. This new system selects the most competitive projects in terms of price, offering a remuneration supplement contract for 20 years to the successful bidders. This is a major change from the previous system where eligibility was more direct.

Comparison of tenders before and after 2021

Since 2021, a clear evolution has been observed. Tenders have diversified with categories such as « CRE 5 » or « PPE2 », covering larger capacities, whether on buildings, on the ground, or for self-consumption, and including components for innovative or technology-neutral installations. The power of successful projects has also increased, and weighted average prices (WAP) have shown variable trends. For example, in August 2025, solar panel prices reached historically low levels, which may have influenced the competitiveness of bids. It is important to monitor the evolution of these prices to understand market dynamics. Grid connection request volumes, available on dedicated pages, also give an idea of market appetite.

Observed trends in the completion rate

The completion rate is a key indicator that reflects the ability of successful bidders to complete their projects within the allotted time. Changes in tender procedures, eligibility conditions, and even required professional qualifications have a direct impact on this rate. For example, projects successful in a tender obtain a remuneration supplement contract, but must also secure an aggregation contract for the sale of electricity. Administrative procedures, such as the connection request and declaration in the Potentiel space, must be carried out within strict deadlines after designation as a successful bidder. Non-compliance with these steps can affect the overall completion rate. Understanding how the remuneration supplement works is therefore essential for project developers.

Sustainability requirements in photovoltaic projects

Beyond simple energy production, photovoltaic tenders increasingly integrate criteria related to the sustainability of installations. These requirements aim to minimise the environmental impact of projects throughout their life cycle, from component manufacturing to end-of-life.

Carbon footprint of modules

One of the key requirements concerns the carbon footprint of the photovoltaic panels themselves. This involves ensuring that the modules used do not have an excessive carbon footprint during their manufacture. For projects subject to certain tenders, a limit is set, for example, at 740 kg eqCO2/kWp. This measure is often verified by a simplified carbon assessment carried out by an accredited certification body. This encourages manufacturers to optimise their production processes and favour less impactful materials. The objective is to ensure that the energy we produce is as clean as possible from the outset. It is important to inquire about the specificities of each tender, as these conditions may vary.

Component resilience

The durability of a photovoltaic installation is not limited to its initial carbon footprint. It also encompasses the robustness and longevity of components in the face of climatic hazards and wear and tear over time. Tenders may therefore include requirements relating to the resistance of modules, inverters, and mounting structures. This can translate into stricter manufacturing standards, particularly concerning module assembly and cell manufacturing. The idea is to ensure that installations can operate reliably for many years, thereby reducing the need for frequent replacements and associated waste. Good resilience directly contributes to the economic and environmental performance of the project in the long term. It is advisable to consult the specifications to find out the precise requirements concerning material resistance and equipment design. The Environment Agency (Ademe) also offers resources on sustainability aspects in the energy sector see Ademe’s advice.

Certificate of conformity for installations

Finally, to ensure that all requirements, including those for sustainability, are met, a certificate of conformity is often required. This document, issued by an independent control body, certifies that the installation complies with current technical, regulatory, and environmental standards. In the context of certain simplified tenders, the control of many commitments is delegated to these control bodies. This helps streamline administrative procedures while maintaining a high level of requirement for the quality and durability of projects. Obtaining this certificate is an important final step to validate the project’s conformity and its ability to benefit from support mechanisms. It is therefore essential to prepare your application thoroughly and ensure that every aspect of the installation meets the defined criteria. Successful bidders are designated by the Minister for Energy after analysis of bids by the Energy Regulatory Commission (CRE), which verifies the completeness of applications and the competitiveness of proposed prices learn more about the CRE procedure.

For your solar projects to be a success, it is essential to comply with sustainability rules. These rules help ensure that the energy we produce is good for the planet and for all of us. Think of them as guides for building installations that last a long time and are manufactured responsibly. To learn more about how we can help you build sustainable solar projects and to discover our solutions, visit our website today!

Conclusion: Learning lessons for the future

Ultimately, understanding and analysing the completion rate of your photovoltaic bids is an important step. It gives you an idea of the performance of your proposals compared to others. By looking at the figures, you can better adjust your strategies for future tenders. It’s a bit like learning from each experience to do better next time. Keep an eye on this data; it will help you navigate this field and improve your chances of success. Remember that every project is an opportunity to learn and progress in this constantly evolving sector.

Frequently Asked Questions

What is the completion rate in the field of photovoltaic solar energy?

The completion rate is a bit like knowing if a solar panel project has been successfully built after being chosen in a tender. It shows what proportion of the promised projects have actually been implemented. It’s important to know if the set objectives are being met.

Why are solar tenders important?

Tenders are competitions where companies propose their solar panel projects. They are important because they allow for the selection of the cheapest and most efficient projects, while ensuring that the country’s planned amount of solar energy is indeed built.

How is price used to select solar projects?

In most tenders, price is the most important criterion. Projects that request the least money to produce solar electricity are often those chosen first. It’s like a competition to offer the best price.

What is the ‘remuneration supplement’?

The remuneration supplement is financial aid. If you have a solar project chosen during a tender, you sign a contract. This contract guarantees you a certain price for the electricity you sell for 20 years, even if the market price falls.

How can I know how much solar electricity will be directly consumed by the building?

To know how much of your own solar electricity you will use, you need to compare your production with your consumption. Online tools can help you estimate this by looking at your consumption habits and the power of your panels.

Have the tender rules changed over time?

Yes, the rules have evolved. Before, it was simpler; you applied for aid and obtained it if you met the conditions. Now, there is more competition, with tenders where you have to propose a price, and only the best are selected.

What are the requirements for solar panels to be considered ‘sustainable’?

To be sustainable, solar panels must have a low environmental impact, for example, a good carbon footprint. The materials used must also be strong and durable, and the installation must comply with quality standards.

What is a ‘simplified’ tender?

A simplified tender is a faster version with less paperwork than older tenders. It is often intended for medium-sized projects and focuses primarily on price to select projects.