Energy-saving options

Abstract

When several energy-thrift measures are implemented simultaneously in the same building, it is probable that the overall saving will be less than the sum of those expected if implemented individually, each time starting from the present situation. The relationship between such savings and capital investment has been obtained for 90 energy-saving options in total, implemented on four hospital sites. It is concluded that the financial returns on the capital expenditure are considerably enhanced by spreading the investment over several sites, rather than by investing in the relatively high rate-of-return options on only a single site.