Member States shall determine historical activity levels of each new entrant and its sub-installations as follows:

(a) the product-related historical activity level shall be, for each product for which a product benchmark has been determined as referred to in Annex I to this Regulation or pursuant to Article 24 of Directive 2003/87/EC, the activity level of the first calendar year after the calendar year where the start of normal operation occurs for the production of this product of the sub-installation concerned;

(b) the heat-related historical activity level shall be the activity level of the first calendar year after the calendar year where the start of normal operation occurs for the import from an installation covered by the EU ETS, other than installations covered by the EU ETS only for the purposes of Articles 14 and 15 of Directive 2003/87/EC, production, or both, of measurable heat consumed within the installation's boundaries for the production of products, for the production of mechanical energy other than used for the production of electricity, for heating or cooling with the exception of the consumption for the production of electricity, or exported to an installation or other entity not covered by the EU ETS with the exception of the export for the production of electricity