66. In this Chapter—
“BFR” is “the building fabric repair increase” and is the amount determined in accordance with article 74 (addition to the annual cost savings for certain qualifying actions incurring building fabric repair expenditure);
“C” is—
1.1, where the qualifying action meets the condition in article 21 (measures accompanied by a declaration from a relevant authority or participant and Secretary of State approval);
otherwise, 1;
“D” is 0.8 (being a deflator for a partial project score);
“F” is—
0.2, where the floor area of the domestic premises is less than 73m2;
0.1, where the floor area of the premises is between 73m2 and 97m2 (both inclusive); and
0, where the floor area of the premises is greater than 97m2;
“IM” is the amount determined in accordance with article 73 (addition to the annual cost savings for certain innovation measures);
“KM” is the determined cost savings for the qualifying action in question;
“OGR” is—
0.35, where the domestic premises are—
off-gas premises; and
in a rural area in Scotland or Wales;
otherwise, 0.