SDE++: Attachments

A feasibility study is required as an attachment of your application. Use the 'Model haalbaarheidsstudie' (Model feasibility study) below. For the mandatory components, see the 'Handleiding haalbaarheidsstudie' (Manual feasibility study).

It is important to carefully check the feasibility of your project before applying. There is no point in applying if your project is not possible. We also need to see if your business is not in trouble. For this, we use your recent annual accounts. The annual accounts are a required part of the feasibility study and show your company's equity. The European Commission has made this check mandatory.

Mandatory information in the feasibility study

The general part of the feasibility study must comprise of the following information:

• A description of the power generation facility.
• A comprehensive financing plan.
• Supporting document for own funds to be invested by the applicant, third parties or shareholders. Own funds must be substantiated by the applicant with documents (annual accounts/balance statements) demonstrating that the required resources (financial and otherwise) will be available when needed. If the applicant submits several projects, they must provide proof of funding to cover the total value of these projects.
• A declaration of intent from a financial backer if less than 20% of the total investment is covered by own funds.
• A calculation of the operational costs.
• For more complex facilities you must also include a process diagram.

Additional information Renewable gas projects

• A declaration of feed-in rights with price estimate provided by the grid operator (for connections larger than 40 Nm³/h).
• An energy yield calculation.

Additional information Renewable heat projects

• A substantiation of the heat output.
• An energy yield calculation.

Additional information Low carbon heat projects

• A substantiation of the heat output.
• An energy yield calculation.

Additional information Low carbon production projects

• A product yield calculation.

Additional questions

During our assessment, we may ask you additional questions about the feasibility of your project. You can find more information about the above requirements in the ‘Handleiding haalbaarheidsstudie’ and the 'Model haalbaarheidsstudie'.

Are you not the owner of the planned location for the production installation? Then you must have the ‘Model toestemming locatie-eigenaar' (location owner permission form) filled in and signed by the location owner. In this form, the owner gives you permission to install and operate the installation.

Are there several owners? Then all of them must give this permission in a signed form. This applies to all categories.

Important: the subsidy applicant or the person who fills out the form must be officially registered as the owner or leaseholder of the location, according to the land registry (Kadaster).

Right of superficies

Do you have a right of superficies obtained through a public tender for government-owned land and roofs? Then you do not need to include the form signed by the owner with your application. Instead, you must attach the preliminary agreement (‘Voorovereenkomst’) or land purchase agreement (‘Grondovereenkomst’) you have entered into with the Central Government Real Estate Agency to your subsidy application. You can find out how to do this on Werkwijze Stappen gebruik Vastgoed voor het Rijk (in Dutch).

If your project is being implemented in a partnership, please include the following information: 

• A list of all the partners in the project.
• A partnership agreement  (Samenwerkingsverklaring) signed by all the partners in the project.

Check for undertaking in difficulty

We are not allowed to give subsidies to undertakings in difficulty. An undertaking in difficulty is a company that would disappear without help from the government. The European Commission has made rules to decide if a company is in difficulty. These rules are agreed by all countries in the European Union and are written in the law. You can read more on the Dutch page Onderneming in moeilijkheden (Undertaking in difficulty).

For all subsidy categories, we check the financial situation of your company when you apply for the SDE++ subsidy. We also look at companies that are connected to your company. To see if you have connected companies, you can use our decision scheme.

What we ask from you

To check if your company is in difficulty, please send these documents with your application:

• The completed Beslisschema Verklaring geen onderneming in moeilijkheden (in Dutch, Decision scheme declaration: no undertaking in difficulty).
• The completed Verklaring geen onderneming in moeilijkheden (in Dutch, Declaration: no undertaking in difficulty).
• The most recent annual accounts of your company. These must meet the following:
  • The balance sheet date must not be older than 18 months.
  • Your accountant or administration office has prepared the annual accounts.
  • You have sent your annual accounts to the Chamber of Commerce.
  • If you do not have annual accounts because you have a small company: send a company balance sheet with profit and loss statement.
  • If you have a new company: send an opening balance sheet.
• If there are connected companies:
  • An organisation chart (diagram) that shows the owner(s). Please go up to the natural persons who are the final owners or beneficiaries (UBOs).
  • The most recent consolidated annual accounts of these companies. These must meet the following:
    • The balance sheet date must not be older than 18 months.
    • Your accountant or administration office has prepared the annual accounts.
    • You have sent your annual accounts to the Chamber of Commerce.

Important: this test is separate from the test for the financial and economic feasibility of your project. This means that you may not be seen as a company in difficulty, but we can still reject your project if we do not have enough confidence in its feasibility.

Do you have questions? Please contact sde@rvo.nl.

One or more permits are usually required to develop a power generation facility. These must have been issued by a competent authority before you submit your subsidy application. If you require a permit for your power generation facility, this permit must be attached to your subsidy application. 

This requirement was included in the Renewable Energy Production and Climate Transition Incentive Decree (Besluit SDEK, in Dutch) to provide more certainty (and to speed up the process) when applying for subsidies under the scheme. As a general rule, the main components of a power generation facility will require permits to be in place. Permits or partial permits for other components, such as underground cables or pipelines, fencing, etcetera are not required as part of your subsidy application.

Environmental permit for one or more parts of your project

An environmental permit may be needed for one or more parts of your project. For each category, it clearly states what kind of permit you need at least. Do you have an old permit that is still valid? If so, it must be valid for the same parts that now require a permit.

Table of all permits you need

At the bottom of this page, you will find an overview table for each category listing all the permits (and other attachments) you need for your technology. You can find the table for your category under Attachment overviews.

If you would like more information about environmental and planning permits, please visit the Omgevingsloket (service desk for environmental and planning permits). 

If you wish to apply for a subsidy to produce renewable electricity, you must include a transmission capacity statement from the grid operator. This must demonstrate that sufficient transmission capacity is available for the relevant location. The feed-in capacity in the transmission capacity estimate must be greater than 0. From the 2024 round of applications onwards, own use is no longer subsidised in all categories of Solar PV and wind. Ask your grid operator to prepare the transmission capacity statement for you. Because the transmission capacity of the electricity grid is subject to change, the transmission capacity statement must be issued specifically for the SDE++ 2024 round of applications. A transmission capacity statement requested for a previous round of application for the SDE+ or SDE++ scheme will not be sufficient. If you do not know who your grid operator is, consult the overview of EAN codes (‘Eancodeboek’). The transmission capacity statement is not a guarantee of transport capacity.

Grid operators

• Liander
• Enexis Netbeheer
• Stedin
• Tennet
• Coteq
• Rendo
• Westland Infra

Location with little or no feed-in supply

If you are developing a project at a location with little or no feed-in supply, please also include an explanation with your application describing the technical consequences this will have for your project.

Connection to private grid

If you wish to connect your power generation facility to a private grid (closed-distribution system grid), you and the private grid operator must request a transmission capacity estimate from your national or regional grid operator. This is the grid operator who is responsible for the transfer point to which the private grid is connected.

When drawing up the transport indication, the grid operator bases itself on the example below.

When applying for an SDE++ subsidy for wind energy over 100 kW, you must include a wind report with the feasibility study. The wind report must include a wind energy yield calculation. This is prepared by an organisation with expertise in the field of wind energy yield calculations. The average wind speed used in the wind report should be calculated based on local wind data over a period of at least 10 consecutive years. That average wind speed may not exceed the average wind speed for the location concerned as derived from the Windviewer. The Windviewer provides the average wind speed for every location in the Netherlands at every height from 20 to 260 metres. 

Small wind turbines

If your wind turbine has a capacity of less than 100 kW, you do not need to hire an expert to prepare a wind report. A simple calculation of the expected energy output is enough. Your energy supplier can prepare this calculation for you. Include the result with your application.

Do you want to apply for a subsidy for wind turbines with a height restriction? If so, please show this when you send your subsidy application. You can do this with a letter from the authority in charge, or by sending the part of the law or rules that shows there is a height restriction for your subsidy application.

For a subsidy application, you must always send a detailed drawing with the correct scale. This drawing should clearly show the solar PV system you want to install. Maps or photos that are not clear do not suffice. If installations at the planned location exist now or in the future, you must show this clearly. The drawing must also depict the direction of the installation.

Systems attached to a building

For solar PV systems attached to a building, calculate the available wall or roof surface. Remember to consider windows, skylights, and climate systems that are on or attached to the building. For solar PV on walls, you must show the exact direction of the system.

Are you placing your installation on or attached to a building? Then you must include a 'Verklaring van een constructeur' (Statement from a Structural Engineer) with your application. In this statement, the engineer confirms - based on calculations - that the roof or wall is strong enough. This is done according to the rules in the 'Besluit bouwwerken leefomgeving' (Building Works and Living Environment Decree). The statement must match the project for which you are applying for the subsidy.

Are you applying under the category ‘building-mounted with light roof adjustments or lightweight panels’? Then the engineer must also state what changes are needed to make the structure suitable. The cost of these changes must be included in the feasibility study.

Hire a structural engineer

You must hire a structural engineer to do this study and to sign it. A structural engineer is someone who can make the necessary calculations. The engineer who signs the statement must also have done the calculations.

When your application is being reviewed, we may ask you to send the calculation report. We may also contact the engineer for an explanation.

Do you have a structural engineer in your organization who performs this study? Then this person may do the calculation and sign the statement.

Minor roof modifications or lightweight solar panels

Are you applying for a grant in the 'building-integrated with minor roof modifications or lightweight solar panels' subcategory? If so, the structural engineer must also state what changes are needed to make your building suitable. The cost of these changes must be included in the feasibility study.

Do you want to apply for a sun-tracking system? Then you must add an energy yield calculation to your feasibility study. We use this calculation to determine the maximum number of full load hours. You can read more about this requirement in the 'Handleiding haalbaarheidsstudie' (Feasibility study guide).

Will you use double-sided solar panels? Then you must add an explanation to your application. In this explanation, you show how these panels give more power than normal solar panels. You can also include a datasheet of the solar panel you plan to use.

If the environmental permit or zoning plan does not clearly show that your solar park is nature-inclusive, you can still apply for a grant if you have a scientifically based certification that is widely recognised by the sector.

The certification must show that the installation:

• does not have a negative impact on plants, animals, or biodiversity;
• allows enough sunlight between the solar panels to help maintain soil and water quality; and
• includes natural landscape features and is well integrated into its surroundings.

An example of this type of certification is EcoCertified.

Table of all permits you need

At the bottom of this page, you will find an overview table for each category listing all the permits (and other attachments) you need for your technology. You can find the table for your category under Attachment overviews.

For most technologies in the renewable electricity category, you will need the following permits:

Environmental permit for a building plan activity

If you place your production installation on, in, or attached to a new building, you need a permit under the Environmental Act. For work on existing buildings, an environmental permit may also be required, for example, for a historic building or solar panels on a facade.

• A ground-based shelter for parking vehicles (a carport) is also considered a building.
• If you have obtained a right of superficies through a public tender from Rijksgronden and Rijksdaken, you only need a draft environmental permit.
• Do you think you do not need a permit for the situations above? Please send a statement from the authority that issues permits, showing that no permit is needed.

Environmental permit for an activity that pollutes the environment

If your production installation also needs a permit for an activity that pollutes the environment, include that too. 

Environmental permit for Rijkswaterstaat activity

If your production installation is on or near work by Rijkswaterstaat, such as roads, viaducts, tunnels, bridges, or dikes, you probably need this permit. This was formerly called a Wbr permit.

Environmental permit for a water activity

Your production installation might also need an environmental permit for a water activity. For example, if you apply for a subsidy for a water system, you might need this permit for your solar PV installation.

Is your connection capacity more than 40 Nm³ per hour? If so, include a feed-in declaration with a cost estimate from your grid operator with your application. In this document, the grid operator confirms that you are allowed to supply gas to the public gas grid.

Table of all permits you need

At the bottom of this page, you will find an overview table for each category listing all the permits (and other attachments) you need for your technology. You can find the table for your category under Attachment overviews.

For most technologies in the renewable gas category, you will need the following permits:

Environmental permit for a a building plan activity

If you place your production installation on, in, or attached to a new building, you need a permit under the Environmental Act. For work on existing buildings, an environmental permit may also be required, for example, for a historic building or solar panels on a facade.

• A ground-based shelter for parking vehicles (a carport) is also considered a building.
• If you have obtained a right of superficies through a public tender from Rijksgronden and Rijksdaken, you only need a draft environmental permit.
• Do you think you do not need a permit for the situations above? Please send a statement from the authority that issues permits, showing that no permit is needed.

Environmental permit for an activity that pollutes the environment

If your production installation also needs a permit for an activity that pollutes the environment, include that too.

Are you submitting an application for the category ‘Biogas digestion with CHP’? Or for a wastewater treatment plant (WWTP) category with CHP? Then you must include a transport indication from the grid operator for the electricity supply if your installation will be connected to a large-scale grid connection (more than 3 x 80 A). 

This document must show that there is enough transport capacity available at the location you are applying for. The transport indication must be issued for the application round in which you apply for the subsidy.

Connection to private grid

Are you connecting your installation to a private grid (GDS network)? Then you must request a transport indication together with the operator of the private grid from your national or regional grid operator. This refers to the grid operator responsible for the connection point of the private grid.

Do you supply heat to other parties? If so, include a letter of intent stating that they intend to purchase the heat. Add this letter to your application.

Are you applying for a biomass combustion or fermentation installation? Then you must include an energy production calculation with your feasibility study. You can read more about this requirement in the 'Handleiding haalbaarheidsstudie SDE+' (Feasibility Study Guide).

When applying for a subsidy, you must always include a detailed, to-scale drawing that clearly shows the planned production installation. Unclear maps or photos are not good enough. 

Will there be more installations at the same location? Then make this clear on the drawing. The drawing must also show the direction the installation is facing.

For installations on buildings, calculate the available roof area and take into account skylights and climate systems already on the roof.

Are you placing your production installation on or attached to a building? Then you must include een 'Verklaring van een constructeur' (Statement from a Structural Engineer) with your application.

In this form, a structural engineer gives a statement – based on a calculation – about the load-bearing capacity of the roof or wall, according to the 'Besluit bouwwerken leefomgeving' (Living environment (buildings) decree). This statement must match the project for which you are applying for a subsidy.

Signed by a structural engineer

You must have the calculation and declaration made and signed by a structural engineer. A structural engineer is someone who can make the required calculations.

The engineer who signs the declaration must at least have checked the construction by calculation. During the review of your subsidy application, we may ask you to send us the calculation. We may also contact the engineer for more information about the statement.

Do you have a structural engineer in your own organization who can do this? Then they may make the calculation and sign the declaration.

You can read more about the required statement in the document 'Informatieblad toelichting verklaring van een constructeur’ (Explanation Sheet Structural Engineer’s Declaration).

A geological survey is required for geothermal energy projects. Please attach the geological survey report to your subsidy application. The TNO report 'Specificaties geologisch onderzoek voor geothermieprojecten – Rapportagevereisten SDE++ en RNES‘ (Specifications for geological surveys for geothermal energy projects – SDE+ and RNES reporting requirements) sets out the minimum requirements of the geological survey for your SDE++ subsidy application.

TNO can facilitate the geological survey. TNO has made the software package and DoubletCalc user guide available on NLOG, the Netherlands oil and gas portal. You can use DoubletCalc to calculate the P50 output. The user guide explains the method used to calculate the P50 output.

For the SDE++ scheme, the rated power output of the geothermal system must be determined with a probability of at least 50%.

Table of all permits you need

At the bottom of this page, you will find an overview table for each category listing all the permits (and other attachments) you need for your technology. You can find the table for your category under Attachment overviews.

For most technologies in the renewable heat category, you will need the following permits:

Environmental permit for a a building plan activity

If you place your production installation on, in, or attached to a new building, you need a permit under the Environmental Act. For work on existing buildings, an environmental permit may also be required, for example, for a historic building or solar panels on a facade.

• A ground-based shelter for parking vehicles (a carport) is also considered a building.
• If you have obtained a right of superficies through a public tender from Rijksgronden and Rijksdaken, you only need a draft environmental permit.
• Do you think you do not need a permit for the situations above? Please send a statement from the authority that issues permits, showing that no permit is needed.

Environmental permit for an activity that pollutes the environment for biomass and solar energy

If your production installation also needs a permit for an activity that pollutes the environment, include that too. Usually, this is part of the environmental permit for the construction activity.
 

Environmental permit for a Natura2000 activity for biomass

Does your project cause significant nitrogen emissions during the operational phase, such as biomass projects? Then include the environmental permit for Natura2000 activities with your application.
 

Permits under the Mining Act for geothermal energy

Are you applying for a geothermal project? Then include the permit for drilling the geothermal source with your application. This may be an exploration or production permit (issued before 1 July 2023), or an 'area assignment' or 'starting permit' under the new Mining Act.
 

Environmental permit for a water activity for solar energy

Your production installation might also need an environmental permit for a water activity. For example, if you apply for a subsidy for a water system, you might need this permit for your solar PV installation.

Will you supply heat to third parties? Then include a letter of intent for the offtake as an attachment with your application.

To apply for an SDE++ subsidy for PVT panels combined with a heat pump, a feasibility study is required. When submitting your subsidy application, you must always include a detailed, scaled drawing showing the requested PVT installation clearly and accurately.

Other installations on the same location

If there are other installations at the proposed location (now or in the future), this must be clearly indicated. The drawing must also show the orientation of the installation.

Installation on a roof

Will your installation be placed on a roof? Then calculate the available roof area, and take into account obstacles such as skylights and climate control equipment already present on the roof.

Are you placing your installation on or attached to a building? Then you are required to include a 'Verklaring van een constructeur' (Statement from a Structural Engineer) with your application.

In this document, a structural engineer provides a statement – based on calculations – confirming that the roof meets the load-bearing requirements according to the 'Besluit bouwwerken leefomgeving' (Building Structures Decree). The statement must match the specific project for which you are applying for the subsidy.

Signed by a structural engineer

The investigation must be carried out and signed by a structural engineer. A structural engineer is someone qualified to perform the required calculations. The structural engineer who signs the statement must have personally calculated the load-bearing capacity of the construction.

Do you have a structural engineer in your own organization? That person may perform the calculations and sign the statement.

During the assessment of your subsidy application, we may ask you to submit the actual structural calculations. We may also contact the structural engineer for clarification about the statement provided.

For more information about the roof load-bearing statement, see the documentin 'Informatieblad toelichting verklaring van een constructeur’ (Explanation Sheet Structural Engineer’s Declaration).

A geological survey is required for geothermal energy projects. Please attach the geological survey report to your subsidy application. The TNO report 'Specificaties geologisch onderzoek voor geothermieprojecten – Rapportagevereisten SDE++ en RNES‘ (Specifications for Geological Surveys for Geothermal Energy Projects – SDE+ and RNES reporting requirements) sets out the minimum requirements of the geological survey for your SDE++ subsidy application.

TNO can facilitate the geological survey. TNO has made the software package and DoubletCalc user guide available on NLOG, the Netherlands oil and gas portal. You can use DoubletCalc to calculate the P50 output. The user guide explains the method used to calculate the P50 output.

For the SDE++ scheme, the rated power output of the geothermal system must be determined with a probability of at least 50%.

With your application, you must include a map showing the intended pipeline route. On this map, clearly indicate:

• the pipeline diameters
• the pipeline length from the connection point (where the residual heat is extracted) to the end user of the residual heat.

Table of all permits you need

At the bottom of this page, you will find an overview table for each category listing all the permits (and other attachments) you need for your technology. You can find the table for your category under Attachment overviews.

For most technologies in the low-carbon heat category, you will need the following permits:

Environmental permit for a a building plan activity

If you place your production installation on, in, or attached to a new building, you need a permit under the Environmental Act. For work on existing buildings, an environmental permit may also be required, for example, for a historic building or solar panels on a facade.

• A ground-based shelter for parking vehicles (a carport) is also considered a building.
• If you have obtained a right of superficies through a public tender from Rijksgronden and Rijksdaken, you only need a draft environmental permit.
• Do you think you do not need a permit for the situations above? Please send a statement from the authority that issues permits, showing that no permit is needed.

Environmental permit for an activity that pollutes the environment (not for geothermal energy)

If your production installation also needs a permit for an activity that pollutes the environment, include that too. 

Environmental permit for Rijkswaterstaat activity for solar energy

If your production installation is on or near work by Rijkswaterstaat, such as roads, viaducts, tunnels, bridges, or dikes, you probably need this permit. This was formerly called a Wbr permit.

Permits under the Mining Act for geothermal energy

Are you applying for a geothermal project? Then include the permit for drilling the geothermal source with your application. This may be an exploration or production permit (issued before 1 July 2023), or an 'area assignment' or 'starting permit' under the new Mining Act.

Environmental permit for a water activity for aquathermal energy and solar energy

Your production installation might need an environmental permit for a water activity.

If you are not responsible for the transport and storage yourself, you must include one or more capacity availability statements with your CCS subsidy application. These statements must come from the party or parties that will handle the transport or permanent storage of the captured CO₂. This ensures that the requested capacity can actually be stored. To support your project, you must use the 'Modelverklaring transportcapaciteit' (Model statement on transport and storage capacity).

In the feasibility study, you must explain how you will deliver the captured CO₂ to the greenhouse sector. For this, include documents such as the specification sheets of the CO₂ capture installation and a description of the process in which the CO₂ is released and captured. Also add a map showing the planned pipeline route or transport route from CO₂ capture to CO₂ delivery. In addition, state whether you, as the applicant, will transport the CO₂ yourself or if a third party will do this for you.

Table of all permits you need

At the bottom of this page, you will find an overview table for each category listing all the permits (and other attachments) you need for your technology. You can find the table for your category under Attachment overviews.

For most technologies in the low-carbon production category, you will need the following permits:

Environmental permit for a a building plan activity (not for CCS and CCU)

If you place your production installation on, in, or attached to a new building, you need a permit under the Environmental Act. For work on existing buildings, an environmental permit may also be required, for example, for a historic building or solar panels on a facade.

• A ground-based shelter for parking vehicles (a carport) is also considered a building.
• If you have obtained a right of superficies through a public tender from Rijksgronden and Rijksdaken, you only need a draft environmental permit.
• Do you think you do not need a permit for the situations above? Please send a statement from the authority that issues permits, showing that no permit is needed.

Environmental permit for an activity that pollutes the environment

If your production installation also needs a permit for an activity that pollutes the environment, include that too.

CCS: different permit requirements

Different permit requirements apply to CCS projects.

If you already have the permits for your installation, include the complete permits with your grant application.

If you do not yet have the permits, you must at least include the complete permit application for the environmental part of the environmental permit. This applies to components that must be new under the scheme, such as the capture, purification, or liquefaction installation.

If the CO₂ will be transported in liquid form, you must also include the complete permit application for at least the environmental part of the new liquefaction installation.

To monitor the progress of your project, you must submit the complete permit application for the storage sites to the Ministry of Economic Affairs and Climate within one year after your grant is awarded. You must also send us the complete environmental permit for the capture, purification, or liquefaction installation no later than 3 years after the grant is awarded.

CCU: different permit requirements

You must include the complete permit application for the environmental part of the environmental permit. This applies to components that must be new under the scheme, such as the capture, purification, or liquefaction installation.

If the CO₂ will be transported in liquid form, you must also include the complete permit application for at least the environmental part of the new liquefaction installation.