Significant savings in CO2 emissions can be won from fabric upgrades, and improved forms of heating. An increase in the number of building retrofits and installations of energy efficient plant such as biomass boilers or CCHPs must be the aim if the UK is serious in meeting its commitment to CO2 reduction at both the domestic and EU level. A way of achieving this increase, which will need to be significant, would be to tap into the vast funds under management by institutional investors who are required to invest those funds to optimise its monetary return, taking into account the level of risk.

The aim of the research is to identify the enabling conditions that would need to exist to attract institutional investment in energy efficiency at scale. The UK Green Investment Bank has invested £50m into three energy efficiency funds, requiring each fund manager to match the amount by attracting investment from institutional investors. It is these funds that have been analysed as a single Green Investment Bank case study. Embedded units of analysis are on two levels with the individual funds being the first, and the institutional investors investing in those funds as the second. A hybrid deductive and inductive qualitative approach to the research was taken employing thematic analysis.

The findings of the research reported here indicate that the emerging key enabling conditions that would make energy efficiency an attractive proposition are firstly, the way energy efficiency investments are classified in terms of an investment asset class, secondly the contractual structure of the individual transactions made by the funds, and finally, the experience and familiarity of the fund manager.