CHP declaration of conformity: the final permit
The approval process for decentralized generation units (CHP) consists of two stages:
- Plant certificate (planning phase)
- Declaration of conformity (after commissioning)
Part one takes place in the planning phase and confirms that the electrical planning meets all the guidelines for grid connection. After commissioning, the CHP must prove this in practice and as part of a test procedure.
The declaration of conformity confirms that your plant meets all technical guidelines in practice. You are only allowed to permanently feed in electricity with this proof.
What is checked?
- Requirements of all unit certificates
- Requirements of all component certificates
- Specifications from the plant certificate Type A, Type B or Type C
(e.g. functioning of control and protection devices, parameters of the generation units, size of the operating equipment)
When must the declaration of conformity be available?
The deadlines are set by the technical guidelines VDE-AR-N 4110 (medium voltage), VDE-AR-N 4120 (high voltage) and VDE-AR-N 4130 (extra-high voltage):
- First generation unit (CHP unit): no later than 12 months after commissioning
- Entire generation plant (CHP): no later than 6 months after commissioning
What preparation is needed?
In addition to the plant certificate, a commissioning declaration is required.
The associated documentation must be submitted to the respective grid operator within two weeks of commissioning the last generation unit (CHP unit). The connection user themselves or a qualified body commissioned by them takes care of this. This can be, for example, the electrical planner or the plant constructor.
How long is the declaration of conformity valid?
The declaration of conformity is valid indefinitely.
Note: Technical guidelines may change. Operators should regularly check their plant to ensure compliance with current standards.
➡ Questions about the declaration of conformity? Contact us: buero@ge-cert.de
The MKH Greenergy Cert GmbH team will be happy to answer any questions you may have.
+49 40 880 991 820
buero@ge-cert.de