PART 1Introduction

“Generating CMU”4.

(1)

A “generating CMU” is—

(a)

an existing generating unit which meets the conditions in paragraph (2);

(b)

a prospective generating unit which, when commissioned, will meet the conditions in paragraph (2);

(c)

a combination of two or more existing generating units which meet the conditions in paragraph (3); or

(d)

a combination of two or more prospective generating units which, when all of the generating units have been commissioned, will meet the conditions in paragraph (3).

(2)

The conditions referred to in paragraph (1)(a) and (b) are that—

(a)

the generating unit provides electricity;

(b)

the generating unit is capable of being controlled independently from any other generating unit;

(c)

the net output of the generating unit is measured by one or more half hourly meters in accordance with capacity market rules; and

(d)

the generating unit has a connection capacity not less than the minimum capacity threshold.

(3)

The conditions referred to in paragraph (1)(c) and (d) are that—

(a)

the generating units meet at least one of Conditions 1 to 4 in paragraph (4);

(b)

the generating units are all of the same type and owned by the same person;

(c)

subject to paragraph (5), each generating unit is capable of being controlled independently from any other generating unit not forming part of the generating CMU;

(d)

the net output of all the generating units is measured by one or more half hourly meters in accordance with capacity market rules; and

(e)

the aggregate connection capacity of all the generating units is not less than the minimum capacity threshold.

(4)

For the purposes of paragraph (3)(a)—

(a)

Condition 1 is that the generating units all form part of a single registered trading unit;

(b)

Condition 2 is that—

(i)

the generating units are all connected to the total system at the same boundary point; and

(ii)

none of the generating units form part of a registered trading unit;

(c)

Condition 3 is that—

(i)

the generating units have an aggregate connection capacity not exceeding 50 MW; and

(ii)

none of the generating units form part of a registered trading unit;

(d)

Condition 4 is that—

(i)

the generating units are all hydro generating units which are registered as a single BM unit under the Balancing and Settlement Code; and

(ii)

there are not more than 10 such generating units.

(5)

The condition in paragraph (3)(c) does not apply where the generating units meet Condition 4 in paragraph (4).

(6)

In paragraph (1)(b) and (d), references to a prospective generating unit being commissioned are to be treated, in the case of a unit falling within paragraph (b) of the definition of “prospective generating unit” in paragraph (8), as references to the unit being recommissioned following an improvements programme.

(7)

For the purposes of paragraph (3)(b), generating units are of the same type if—

(a)

they are all CMRS distribution units;

(b)

they are all non-CMRS distribution units; or

(c)

they are all transmission units.

(8)

In this regulation—

“boundary point” means any point at which any plant or apparatus not forming part of the total system is connected to the total system;

“CMRS distribution unit” means a generating unit which exports electricity to a distribution network, where the metering system of that generating unit is registered in the central meter registration service;

“existing generating unit” means a generating unit that has been commissioned;

“hydro generating unit” means a generating unit driven by water, other than one driven by tidal flows, waves, ocean currents or geothermal sources;

“non-CMRS distribution unit” means a generating unit which exports electricity to a distribution network, which is not a CMRS distribution unit;

“prospective generating unit” means a generating unit or proposed generating unit that—

(a)

has not been commissioned; or

(b)

is to be subject to an improvements programme and has not been recommissioned following that improvements programme;

“registered trading unit” means a trading unit, other than a base trading unit, registered in accordance with the Balancing and Settlement Code; and

“transmission unit” means a generating unit which exports electricity to the GB transmission system.

(9)

In this regulation the following expressions have the same meanings as in the Balancing and Settlement Code as it was in force on 1st April 2014—

  • “base trading unit”;

  • “BM unit”;

  • “central meter registration service”;

  • “metering system”; and

  • “trading unit”.