following figures are derived from an actual
working installation at the home of one of our Trustees. The
panels were installed and commissioned on July 4th 2010.
amount generated over 12 months 2,925 kw X 21p = £614.25
Amount used by householder 1950 kw saving 13.7p per kw = £
returned to the national Grid 1312 kw X 3p = £ 43.88
amount of effective income generated = £928.28
cost of installing the panels (3.84kw capacity) was £15,000,
as you can see from the figures above the rate of return on
capital invested will be approximately 6.45%. With current
Annuity rates hovering around the 5-6% mark, this would seem
to be a much better prospect.
allowance of 21p per kw paid by the government is guaranteed
for 25 years from the date of installation and will be increased
by the same amount as the increase in the RPI each year. Should
the RPI fall, the allowance will not be reduced.