# The Hirwaun Generating Station Order 2015, Schedule 1: AUTHORISED DEVELOPMENT

Extent: E+W+S

In the County Borough of Rhondda Cynon Taf—
A nationally significant infrastructure project as defined in sections 14(1)(a) and 15 of the 2008 Act consisting of a generating station with a gross rated electrical output of up to 299MWe comprising—
Numbered work 1 development comprising the demolition of all existing buildings and structures, including foundations, hardstanding and services,
Numbered work 2A development comprising—
(a)up to 5 gas turbine generators; and
(b)up to 5 exhaust gas emission flue stacks,
Numbered work 2B development comprising—
(a)an administration building;
(b)a store;
(c)a control room/office/workshop;
(d)telemetry apparatus;
(e) three black start diesel generators where one gas turbine generator is constructed and one black start diesel generator where two, three, four or five gas turbine generators are constructed;
(f)a natural gas receiving station and gas treatment compound containing—
(i)a pipeline inspection gauge (PIG) receiving facility;
(ii)isolation valves, metering, heating, filtering, compression, pressure regulation equipment;
(iii)electricity supply kiosk; and
(iv)control and instrumentation kiosks,
(g) external fin fan cooler (where only one gas turbine generator is constructed).
Numbered work 2C development comprising a switchyard / banking compound containing up to eight transformers, switchgear building and other plant required to manage the transmission of electricity,
Numbered work 2D development comprising a construction and maintenance compound including new hardstanding,
Numbered work 2E development comprising—
(a)security infrastructure, including cameras, perimeter fencing and a gatehouse;
(b)site lighting infrastructure, including perimeter lighting columns;
(c)internal roadways, car parking, pedestrian network, cycle parking, hardstanding and water treatment trailers;
(d)site drainage, attenuation pond and waste management infrastructure;
(e)electricity, water, wastewater and telecommunications and other services;
(f)a raw / fire water tank and demineralised water storage tank;
(g)landscaping including tree planting, fencing and other boundary treatments and ecological mitigation (including bat mitigation structure);
(h)tree and hedge removal;
(i)high voltage and low voltage cabling, equipment and controls and associated telemetry and electrical protection auxiliary cabling;
(j)underground gas pipeline connection, associated telemetry and cathodic protection test / transformer rectifier unit; and
(k)other ancillary equipment,
Numbered work 2F development comprising new or modified permanent means of access to numbered work 2 including permanent road surface, drainage, gates and fencing,
Numbered work 2G development comprising the maintenance strengthening or re-laying in a new location of the existing culvert forming that part of ordinary watercourse River Camnant within the Order limits, such works subject to maintaining the existing flow rate.

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Source: https://www.legislation.gov.uk/uksi/2015/1574/schedule/1 (the official version)
Page: https://openlegislation.uk/hirwaun-generating-station-order-2015/schedule-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.