Green projects - particularly sustainable energy sources and clean technology - include multiple technologies, at different stages of maturity, and require different types of financing vehicle. Most pension funds are more interested in lower risk investments which provide a steady, inflation adjusted income stream - with green bonds consequently gaining interest as an asset class, particularly - though not only - with the SRI universe of institutional investors. Yet, despite the interest in these instruments, pension funds‟ asset allocation to such green investments remains low. This is partly due to a lack of.