FAQs

Net metering is the offsetting of the energy transmitted to the Grid from a power station against the energy absorbed in the consumption facility of the self-generator. This concept refers to a power station installed within the same area, or an area adjacent to the consumption facility, which is connected to the distribution network through the same supply connection. In net metering, energy doesn’t have to be simultaneously generated and consumed – if the generation is less than the consumption, consumers only pay the difference.

The basic terms and conditions for installing power stations with net metering are:

• The existence of an active permanent electricity supply registered in the self-generator’s name, which will supply power to his or her consumption facility.
• Only one consumption meter – i.e. the meter supplying power to the consumption facility – can be assigned to each power station.
• Power stations must be installed in the same area of consumption facility, or to an area adjacent to the consumption facility to which it will be assigned.
• Interested parties must be legally qualified to use of the area of installation of their power stations.
• Prospective photovoltaic system owners must be free of unpaid debts relevant to electricity bills towards their Suppliers. In the opposite case, they must be parties to a debt settlement scheme.
• The connection supply of self-generators must not be subject to the provisions of the Environmental Residential Tariff (according to Ministerial Resolution no.YPEN/YPRG/26359/4101, published in the Official Government Gazette (FEK) of the Hellenic Republic B/1936/30.5.2018). In the opposite case, self-generators will be automatically removed from this tariff once their power stations become activated.

No. In net metering, each consumption meter is assigned to a single power station, i.e. a supply connection number. Assignment to more than one consumption meter is allowed only in the framework of virtual net metering.

A Net Metering Agreement is entered into between a Supplier and a self-generator for an effective period of 25 years, beginning from the date when the supply of a power station becomes activated. In case of change of Supplier after activation of the power station, the Net Metering Agreement with the previous Supplier will automatically be terminated and the self-generator will enter into a new Net Metering Agreement with the new Supplier for the remaining term of the 25-year period. The same applies for transition of an operating PV station installed in the framework of the Special Programme for Development of Photovoltaic Stations in buildings (according to the provisions of FEK B/1079/2009) subject to the regime of self-generation with net metering.

The metering of electricity generated from the power plant, as well as the electricity transmitted into and extracted from the electricity grid is done simultaneously by HEDNO, in accordance with the existing metering cycle that governs the consumption facility of a self-generator.

The Supplier finalizes the net metering procedure in the bills of actual consumption of electricity, based on the metering details provided by HEDNO according to each metering cycle. In any case of inability to receive indications at the date of scheduled metering, due to any reason, the offsetting process will take place after the next regular metering.

Regulated charges are calculated according to the following modes:

• The SLPE tariff is calculated based on the energy absorbed (A) multiplied by the respective unit tariff.
• The variable parts of the Tariffs for System and Network Use (energy tariff) are calculated based on the energy absorbed multiplied by the respective unit tariff.
• The PU tariff is calculated on the basis of total consumed energy (K = A+P–E) multiplied by the respective unit tariff. In cases of bills with different tariff time zones, the total energy generated and transmitted will be used for calculating PUs that correspond solely to the consumption within the regular tariff zone (day consumption).