Pennies in the wind
The NEF report largely focuses on micro-generation - household or community scale generation, such as small wind or solar projects, or CHP boilers. Key to the spread of these technologies is the simple fact that they can pay for themselves in a few years, and then be cash-generative as you sell excess generation back to the grid.
The case is charmingly illustrated by the islanders of Gigha, who bought their island in 2002 and have now installed three second-hand wind turbines named Faith, Hope and Charity. The Guardian report quotes the no-less-charmingly named spokesman, Willie McSporran: "You just hear a little swish as the blade passes overhead. You can speak beside them as you would normally ... . When you hear the noise, it's saying pennies, pennies. It's making money for the community all the time."