Dear all,

our project will get a biogas CHP plant and we are also targeting EAc6 (Green Power) with exemplary performance. The green power supply contract is running since 1th January 2013.
Our problem is that the biogas CHP plant will not start operating until next winter. Until then, the building is heated by ordinary gas-fired boilers as an interim solution. So the onsite renewable energy supply will start approximately one year after the green power supply contract.

Can any problems in certification occur due to this delay?

Many thanks.