 Energy World was one of several low-energy projects built in the Milton Keynes area.These included trials on a number of individual houses and the construction of 177 houses in the 1970s Pennyland project.Following the success of Energy World, 1,200 dwellings were built to the same (or better) energy standard in the rest of Shenley Lodge (known as 'the Energy Park'), and the same standard was subsequently applied Citywide.