# The Environmental Authorisations (Scotland) Regulations 2018, Paragraph 4: Aggregation


A combination formed by two or more new medium combustion plants is considered to be a single medium combustion plant for the purposes of this schedule and their rated thermal input are added together for the purpose of calculating the total rated thermal input of the plant, where—
(a) the waste gases of the plants are discharged through a common stack, or
(b) in the opinion of SEPA, the waste gases of the plant could be discharged through a common stack, taking into account technical and economic factors.

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Source: https://www.legislation.gov.uk/ssi/2018/219/schedule/27/paragraph/4 (the official version)
Page: https://openlegislation.uk/environmental-authorisations-scotland-regulations-2018/schedule-27/paragraph-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.