Natural or legal persons, in one or more of the following capacities, shall be entitled to register with the Balancing Service Providers Registry kept by the HETS Operator, as long as they are able to provide Balancing Services:

a) Producers, holders of a Production License or a relevant Exemption, as long as they own a power generating unit with a valid production license, which is located on the mainland or on the interconnected islands and has an installed capacity of over 5 MW,

RES Producers, holders of a Production License or a RES Producer Certificate or a relevant Exemption, for RES Units with Market Participation Obligation, as long as they own a RES unit and they are not represented by a RES Aggregator,

c) Auto-producers,

d) RES Aggregators, holders of a RES Aggregator License for RES Units with Market Participation Obligation

e) Demand Response Aggregators, holders of a relevant license, and

f) consumers who provide Demand Response Services if they are not represented by a Demand Response Aggregator.

Registration with the Balancing Service Providers Registry is mandatory for producers under item (a).

For the purposes of registration in the Balancing Service Providers Registry, the terms and conditions described in the ‘Terms and Conditions of Balancing Service Providers’ must be satisfied, as approved by decision of the Regulatory Authority for Waste, Energy, and Water subsequent to a recommendation from the HETS Operator, in accordance with paragraph 4 of Article 18 of Law 4425/2016.

On registration in the Balancing Service Providers Registry, the natural or legal persons as per paragraph 1 of this Article (Balancing Service Providers) shall conclude a Balancing Service Contract with the HETS Operator, the content of which shall be in alignment with the provisions of this Rulebook.  The Balancing Service Contract is deemed as concluded between the parties upon registration with the Balancing Service Providers Registry and shall not be subject to any further formalities.

Natural or legal persons, in one or more of the following capacities, are obliged to be registered with the Balance Responsible Party Registry kept by the HETS Operator:

a) Producers, holders of a Production License or a relevant Exemption, as long as they own a power generating unit with a valid production license, which is located on the mainland or on the interconnected islands and has an installed capacity of over 5MW,

b) RES Producers, holders of a Production License or a RES Producer Certificate or a relevant Exemption, for RES Units with Market Participation Obligation, as long as they own a RES unit and they are not represented by a RES Aggregator,

c) Auto-producers,

d) RES Aggregators, holders of a RES Aggregator License for RES Units with Market Participation Obligation, including Last Resort RES Aggregators.

e) Demand Response Aggregators, holders of a relevant license,

f) Consumers, who provide Demand Response Services, if they are not represented by a Demand Response Aggregator.

g) Suppliers, holders of a Supply License, including Suppliers of Last Resort and Default Suppliers,

h) Self-Supplied customers,

i) Traders, holders of a Trading License, and

j) DAPEEP, which is the Operator of the RES Units Portfolio without Market Participation Obligation.

To register in the Balance Responsible Parties Registry, the terms and conditions foreseen by the ‘Terms and Conditions for Balance Responsible Parties’, as approved by decision of the RAEWW subsequent to the recommendations of the HETS Operator, must be met in accordance with paragraph 4 of Article 18 of Law 4425/2016.

On registration in the Balance Responsible Parties Registry, the natural or legal persons as per paragraph 4 of this Article (Balance Responsible Parties) shall conclude a Balance Responsible Parties Contract with the HETS Operator, the content of which shall be in alignment with the provisions of this Rulebook.  The Balance Responsible Party Contract shall be deemed to have been entered into by the parties upon registration with the Balance Responsible Parties Registry and shall not be subject to any further formalities.