The energy tax exemption applies to the generation or storage of renewable energy, not to regular consumption.

Does your connection only have generation or storage?
Does your connection only have generation or storage? And therefore no regular consumption? If so, you can claim a refund of the energy tax on the consumption of your generation/storage system, as it falls entirely under exempt consumption.

Do you have both a power generation system and a battery connected to your main power supply?
If so, you are not eligible for an energy tax exemption.

The Tax and Customs Administration maintains that the energy tax exemption for batteries expires as soon as multiple electricity flows converge behind the main connection, for example, in a combination of solar panels and a battery. In that case, as a customer, you must be able to demonstrate to the Tax and Customs Administration exactly how the electricity flows through the system and that there is no mixing. According to the Tax Authority, this is virtually impossible to demonstrate in practice, and the exemption is not accepted. For this reason, we operate as follows: do you have a combination of systems with a battery connected to a single connection point? If so, you can no longer apply for an exemption for the battery and generation.