The entities participating in the Balancing Market shall be categorized into Balancing Service Entities and Balance Responsible Entities. The Balancing Service Entities shall be represented by Balancing Service Providers, while the Balance Responsible Entities shall be represented by the Contracted Balance Responsible Parties.

The Balancing Service Entities shall be entitled to provide Balancing Energy and/or Balancing Capacity and shall include the following categories:

a) Dispatchable Generating Unit,

b) Dispatchable RES Units Portfolio,

c) Dispatchable Load Portfolio.

The Dispatchable RES Units Portfolios are categorised into Non-Intermittent RES Units Generation Portfolios with no technology distinction and Intermittent RES Generation Units Portfolios, based on the technology of the facilities. RES Units that are in Commissioning Operation status are not eligible to participate in Dispatchable RES Units Portfolio.

The Dispatchable RES Units Portfolios and the Dispatchable Load Portfolios have a minimum allocated capacity of 1 MW. The following are registered in the HETS Operator Registry in separate portfolios:

a) Dispatchable Load,

b) Dispatchable Non-Intermittent RES Generation Units,

c) Dispatchable Intermittent RES Generation Units with wind farms,

d) Dispatchable Intermittent RES Generation Units with photovoltaics,

e) Dispatchable Intermittent RES Generation Units with small hydroelectric plants.

Contracted Generating Units are also included among the Entities, but are not referred to in paragraph 2 of this Article since they do not participate in the Balancing Market procedures. The Contracted Generating Units shall provide additional services in any situation that may lead to the load and/or reserve requirements not being covered during the Integrated Scheduling Process (ISP), following conclusion of a relevant contract, as stipulated in the HETS Grid Code.

Balance Responsible Entities are those entities that assume responsibility for imbalances created and include the Balancing Service Entities referred to in paragraph 2 of this Article as well as the following entities:

a) Non-Dispatchable RES Units Portfolio, 

b) Load Portfolio,

c) RES Units Portfolio without Market Participation Obligation,

d) Import Portfolios and Export Portfolios, excluding the Cross-Border Physical Deliveries corresponding to imports and exports under the coupled interconnection within the framework of the Single Day-Ahead Market Coupling (SDAC), Intraday Auctions, and Continuous Intraday Trading, as calculated in the results of the Single Day-Ahead Market Coupling, Intraday Auctions, and Continuous Intraday Trading, respectively.

Cross-Border Physical Deliveries corresponding to imports and exports through coupled interconnections within the framework of Single Day-Ahead Market Coupling, Intraday Auctions, and Continuous Intraday Trading, as calculated in the corresponding results of the Single Day-Ahead Market Coupling, Intraday Auctions, and Continuous Intraday Trading, respectively, shall be declared to the HETS Operator in accordance with the provisions of the HETS Grid Code and the contract concluded between the HETS Operator and the Shipping Agent.