SDE++ subsidy

Are you planning a project in which CO2 is saved by, for example, generating renewable energy, using residual heat or capturing and storing CO2? It may be eligible for the SDE++ subsidy.

SDE++ subsidy

Until the spring of 2020, the "Sustainable Energy Production Incentive Scheme", usually abbreviated to SDE+, existed. This stimulated large-scale production of renewable energy via an operating subsidy. In the SDE++ scheme, which has existed since the fall of 2020, the abbreviation stands for "Sustainable Energy Transition Incentive Scheme. Whereas the SDE+ focused on producing renewable energy, the SDE++ focuses on reducing CO2.

This means that in addition to the production of renewable energy, the SDE++ scheme also stimulates other techniques that reduce CO2. This makes the new SDE++ scheme considerably broader than the current SDE+ scheme. This SDE scheme can thus make an important contribution to the objectives of the Climate Agreement.

In which project fase should I apply?

Download the tables with the basic amounts and phases per category of the SDE++ 2023 here.

What can Ekwadraat do for my SDE++ project?

A project can be divided into four phases. This includes the application for SDE++ subsidy. Each phase has its own activities. Ekwadraat can unburden you by carrying out (part of) the work. Feel free to contact us and ask for the possibilities.


  • Technical feasibility
    Financial feasibility
    Permit application


SDE++ application

  •  Collect and review all required documents, such as: company data project description, permits, energy consumption, investment and financing plan;
  • Preparing a feasibility study (project plan) and operating budget;
  •  Advising on application strategy;
  •  Digital submission of a complete application to RFO;
  • Answering any questions by RFO.


  • Guidance in tendering for production installation

         > Drawing up specifications, requesting tenders, assessing tenders.

  • Request for tenders from grid operator
  • Power purchase agreement (PPA) request
  • Technical due diligence for financing
  • Supervision of construction and completion inspection
  • Drawing up a measurement protocol



  •  Requesting an advance SDE++ subsidy from RVO
  • Draw up periodic measurement reports

How does the SDE++ subsidy work?

The SDE++ builds on the success of the SDE+, adding a number of new elements. The main changes are:

  • Ranking applications based on subsidy requirement per ton of CO2 emissions avoided [€/avoided ton of CO2 emissions] instead of ranking on base amount [€/kWh].
  • Adding techniques that do lead to CO2 emission reduction but do not generate renewable energy

The SDE++ subsidy has five main categories:

  • Renewable electricity:
  • Renewable heat (CHP):
  • Renewable gas:
  • CO2-reducing heat:
  • CO2-reducing generation:

An application for a production facility is made specifically for one of these categories. For example, an application for SDE++ subsidy solar panels falls under electricity.

Subsequent switching, for example between cogeneration and green gas production, is therefore not possible without a new application. The Netherlands Environmental Assessment Agency (PBL), commissioned by the Ministry of Economic Affairs, calculates the cost price per technique. The calculation is based on a reference plant where most of the projects are profitable. This cost price largely determines how much subsidy you will receive and is called the basic amount. The base amount is the subsidy amount for which you apply.

In addition, there are some terms you need to know to fully understand how the subsidy works:

  • Correction amount
  • Full load hours
  • Duration
  • Base energy price

Correction amount

The correction amount is the price you are expected to receive from the market. This amount is deducted from your base amount. The correction amount is set annually and is the same for everyone.

Full-load hours

A full-load hour is described as the length of time during which the energy source effectively produces energy at full power. A maximum number of full-load hours is determined per technique. For some techniques, at 4,000 full-load hours per year, the maximum subsidy is already reached. This saves you from having to produce year-round if you don't need to and allows you to bridge maintenance periods, for example.


The duration of the subsidy is defined per category. It is often 12 to 15 years, depending on the installation's life expectancy. In some cases, the duration of the subsidy is shorter. For instance, electricity production using industrial pallet stoves has a max duration of 8 years.

Basic energy price

The basic energy price is a bottom line price established by the RVO (Government service for Dutch entrepreneurs). If the correction amount falls below the bottom line price, this bottom line price is redacted from your subsidy. This way, the RVO prevents unnecessary budgeting.

SDE++ opening round

The subcategories that were eligible last year are listed below. Once the 2023 additions are known we will update this list.

Renewable electricity:
o Osmosis
o Hydropower
o Wind
o Solar
Renewable heat (CHP):
o Biomass (fermentation and combustion).
o Composting champost
o Geothermal (ultra)deep
o Solar thermal
Renewable gas:
o Biomass (fermentation and gasification).
Low-CO2 heat:
o Aquathermy (Thermal Energy from Surface Water and Wastewater, TEO and TEA).
o Daylight greenhouse
o Electric boiler
o Geothermal energy (shallow)
o Residual heat
o Heat pump
Low CO2 production:
o CO2 capture and storage, CCS
o Hydrogen by electrolysis

SDE beschikking

Webinar SDE++

In samenwerking met FSFE en RVO hebben we een webinar georganiseerd over de SDE++ subsidie. 
Gemist? Geen ramp, want u kunt deze terugkijken!

In welke fase moet mijn
project aangevraagd 

Download hier de tabellen van 2023!

Apply for SDE++ Subsidy? Choose Ekwadraat!


€ 626 million subsidy requested last year


404 MW of installed capacity


145 applications


5 sustainable technologies


"We have now been working together in the SDE field for about 8 years and our experiences with Ekwadraat have been good. We can therefore confidently recommend them to our clients."


jan vos fudura
Jan Vos

"Ekwadraat helped us realize solar panels on our roof. There was 30,000 euros difference between the various offers from suppliers. With Ekwadraat's independent guidance we were able to make the right choice for a supplier that suited our needs. As a result, we saved considerably on the cost of the installation."

Rick van Houten
Rick van Houten
Director Timboco Kozijntechniek

"Very nice cooperation. We had a lot of questions regarding solar energy, subsidy, applications, etc. All questions well and clearly answered. Eventually the SDE plus application was also submitted and honored."

garage bote pietersma
B. Pietersma

Leading projects

Getting started with the SDE++ subsidy

Want to know more about the SDE++? Calculate the potential subsidy? Or do you want to submit an application? Then get in touch with us.

"I will answer all your questions about the SDE++ subsidy!"