43. In article 27, in paragraph (1)—
(a)in sub-paragraph (d), omit “or the installation of a connection to a district heating system that delivers heat generated wholly or partly from mains gas,”;
(b)for sub-paragraphs (e) and (f) substitute—
“(e)where the measure is the installation of an electric storage heater, but is not a repair—
(i)the measure has a responsiveness rating equal to, or greater than, 0.8 when assessed against the Standard Assessment Procedure; and
(ii)the measure—
(aa)replaces an electric heating system at on-gas premises;
(bb)is installed at on-gas premises where one or more electric storage heaters are already installed;
(cc)is installed at on-gas premises which, immediately prior to the installation of the measure, have neither an efficient heating system nor an inefficient heating system; or
(dd)is installed at off-gas premises;
(f)where the measure is the installation of an electric heating system, but is not a repair—
(i)the measure has a responsiveness rating equal to, or greater than, 0.8 when assessed against the Standard Assessment Procedure; and
(ii)the measure—
(aa)replaces an electric heating system at on-gas premises;
(bb)is installed at on-gas premises where one or more electric storage heaters are already installed;
(cc)is installed at on-gas premises which, immediately prior to the installation of the measure, have neither an efficient heating system nor an inefficient heating system; or
(dd)is installed at off-gas premises;”;
(c)in sub-paragraph (i), for “includes the installation of equipment for the direct conversion of sunlight into electricity” substitute “includes the installation of equipment for the generation of electricity by renewable means”.