a

FR is the estimated flow rate; and

• “flow rate”, in relation to biomethane, means—

  $$\frac{\text{B}}{\text{H}}$$

  where—

  1. a

     B is the amount of eligible biomethane in kWh for which periodic support payments have been received; and

  2. b

     H is the total number of hours in the period commencing with the first day of the first quarterly period in which that biomethane was injected and ending on the last day of the last quarterly period in which that biomethane was injected;

• “installation capacity” means—

  1. a

     in the case of a CHP system to which regulation 9(2)(b) or 9A applies, the capacity determined by the formula—

     $$\frac{\text{x}}{\text{y}}\times \text{P}$$

     where—

     1. i

        x is the total installed peak heat output capacity of all the combustion units to which regulation 9(2)(b) or 9A applies which use the same source of energy;

     2. ii

        y is the total installed peak heat output capacity of all the combustion units forming part of the CHP system; and

     3. iii

        P is the total installed peak heat output capacity of the CHP system; or

     1. a

        for any other plant, except where otherwise specified, the total installed peak heat output capacity of the plant;

• “properly insulated” means—

  1. a

     in respect of piping which is situated below the ground, insulated in accordance with—

     1. i

        BS EN 253 (2009)3;

     2. ii

        BS EN 15632:2 and 3 (2010) and 15632:4 (2009)4; or

     3. iii

        BS EN 15698:1 (2009)5; or

  2. b

     in respect of piping which is situated above the ground, insulated so that the relevant maximum permissible heat losses set out in BS 5422:20096 are not exceeded;

• “quarterly period” means, except where otherwise specified, the first, second, third or fourth quarter of any year commencing with, or with the anniversary of—

  1. a

     in relation to an accredited RHI installation, the tariff start date for that installation;

  2. b

     in relation to a producer of biomethane who is registered in relation to any original biomethane or additional biomethane, the tariff start date for the original biomethane;

• “waste” has the meaning given in Article 3(1) of Directive 2008/98/EC of the European Parliament and of the Council on waste7 and includes excreta produced by animals;

• “additional biomethane” has the meaning given in regulation 43A(5);

• “eligible biomethane” has the meaning given in regulation 42(2);

• “estimated additional biomethane spend” in relation to an assessment date and any additional biomethane registered on a particular date in respect of which a relevant producer has received a periodic support payment means—

  $$\text{A}\times \text{B}\times \text{C}$$

  where—

  1. a

     A is the flow rate for all additional biomethane registered on that particular date;

  2. b

     B is the number of hours in the 12 month period commencing with the assessment date; and

  3. c

     C is the relevant initial tariff or subsequent tariff calculated in accordance with regulations 37 to 37D;

• “estimated original biomethane spend” in relation to an assessment date and any original biomethane in respect of which a relevant producer has received a periodic support payment means—

  $$\text{A}\times \text{B}\times \text{C}$$

  where—

  1. a

     A is the flow rate for all original biomethane;

  2. b

     B is the number of hours in the 12 month period commencing with the assessment date; and

  3. c

     C is the relevant initial tariff or subsequent tariff calculated in accordance with regulations 37 to 37D;

• “fourth relevant date” means the date of coming into force of the Renewable Heat Incentive Scheme (Amendment) Regulations 2015;

• “maximum additional capacity” has the meaning given in regulation 43A(5);

• “original biomethane” means biomethane which is produced by a relevant producer and which falls within that producer’s maximum initial capacity;