After spending so long developing a design based on many sustainability features, receiving the cost estimate focused our attention on the project budget. Some trimming was needed to produce an affordable design that didn't sacrifice the original aim of building a state of the art green home.
Just because a house design can be designed to reach the maximum energy rating of 10 Stars, does that mean we should aim for 10 Stars in our designs? We attended a talk by Tim Adams from F2 Design to find out the answer.
Installing solar cells and then fitting a battery storage system might be worth a few greenie points, but is the extra cost justified on a purely economic analysis? Not yet maybe, but current trends indicate that time isn't too far in the future.