Energy measurements for this project are gross figures, before any renewably generated power is taken into account.
- We assume we want a 5% return on our investment in energy-saving solutions
- We assume a price of 8p/kWh for Tranquility’s calculations
- In all cases we try to understand the complete energy balance of any option
- Where possible we should try to minimise the total environmental cost
To create a true zero carbon building, all energy must be generated from a renewable or a zero carbon source – preferably onsite, but the more energy efficient the building is, the less energy needs to be generated. Plans are afoot to make the Tranquility model ‘negative’ carbon (better than zero carbon). We think we can achieve this by lifting the premium build cost by less than 1% more, to 6.5%.
©Tranquility Houses 2010