Site Quality

Site quality for commissioning

Guaranteed compensation in accordance with EEG 2017

According to EEG 2017, determining the site quality for commissioning is mandatory in order to establish the compensation level for your wind turbine. This assessment must be submitted to the grid operator so that payment can be made through the tendering system. A regular review is then required every five years.

As a DAkkS-accredited testing laboratory, we can prepare this report for you, ensuring it is compliant with standards and recognised.

Our accreditation

Calculation basis & procedure

Our calculations are carried out strictly in accordance with Technical Guideline 6 (TR6) and Technical Guideline 5 (TR5) of the German Association for Wind Energy (FGW e.V.). As no actual yield data is available at the time of commissioning, we simulate an operating period of five years.

The calculation is based on two pillars:

Reference yield: The legally defined comparative value for your system type.
Site-specific yield: This is derived from your wind assessment. We factor in the projected gross energy yield, park efficiency and losses resulting from permitting requirements (e.g. noise reduction measures).
The result: A validated percentage value (site quality), which ensures your precise classification within the EEG (German Renewable Energy Sources Act) feed-in tariff categories.

Secure your compensation with 4cast.

We provide the network operator with accredited proof that is precise, delivered on time and 100% compliant with TR6.

Inquire directly

Once you have placed your order, please send us all the necessary information, as well as the wind measurement and yield data.

We assess site quality in accordance with the precise specifications of TR6. To ensure maximum accuracy, we use site-specific wind models and validated methods.

All results are summarised in a clear and concise PDF.

We will send you the document as soon as it is ready.

EEG-Evolution

Introduction

EEG 2000

The first Renewable Energy Sources Act (EEG) introduced the two-stage reference yield procedure. The aim was to create a fairer system by making locations with weaker winds economically viable.

Remuneration

Initial remuneration

In the original model, the ratio of the actual yield to the reference yield determined how long the initial remuneration would be increased for. The worse the location was in comparison to the reference location, the longer the operator received the higher subsidy rate. Therefore, the reference yield set the pace for the duration of the subsidy.

System change

EEG 2017

With the introduction of the tendering system, the change to a single-stage procedure took place. Funding is now no longer spread over time, but adjusted according to the amount. The reference yield remains the anchor, but now serves to determine correction factors.

Site quality

Today

The reference yield is now essential for calculating site quality. It is the mathematical constant that determines the surcharge value that a project receives. Regardless of the remuneration model, the physical definition of the reference site remains the technical basis for assessment.

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