Net Zero, or generating enough electricity on-site with renewables to offset the average annual usage, can help lead to a world where all energy is renewably generated. Unlike off-grid, the site is connected to the grid, both to draw power and share surplus generation. This fits the trend towards smaller scale distributed generation.

Net Zero has many definitions including energy and emissions, most that limit generation to renewables available on-site, such as solar and wind. Our region may include renewables such as wood and bio-diesel from off-site, while being aware of the net impact of production, and transportation.

The broadest application of the Net Zero concept is homes. The proportional amount of roof area for solar generation of typical homes is greater than for most commercial buildings. Nationally, some large housing developments are building to this goal. Existing homes can also aim for this. The first step, could be to focus on energy conservation such as improved insulation, and efficient lighting and appliances.

One challenging step is eliminating fossil fuel heating with passive and active solar heating, heat pumps, and renewable fuels such as wood, or bio-fuels for heat or to generate electricity and heat. Photovoltaics and wind can generate electricity directly on-site. One step might be to eliminate fossil fuels, and then purchase green electricity.

Links of interest.  Recently built Suncroft house in Eugene designed to reach Net Zero