“We are seeking to make our 70-year-old house a net zero energy one, that is, it generates as much energy as it uses. And we’re determined to do this in a cost effective way.
To that end we installed solar water heating in 2008, which reduced our electricity consumption by one-third. The savings paid off the investment in five years.
In 2013 we installed double-glazing, LED lighting in our main living areas, and a new roof that is thermally highly efficient. We also installed 5.5 kW of photovoltaic panels on the roof at a cost $22,000.
The PVs generated 3 MW h of electricity in their first seven months, most of which was during the winter. With summer coming up, we will generate more. So over the course of the first 12 months we think we will generate more energy than we use. Moreover we’ve switched from gas to electric heating, thereby reducing our carbon footprint further.”
You can read more about what Rod is doing to reduce his transportation carbon footprint in the Climate Change section.