As more projects are pursuing zero net energy, the details of defining ZNE are becoming more critical, and trickier. Are we achieving net zero in terms of kilowatt hours or cost of energy? Will the metric be time dependant modeled energy performance or a full year of actual data? Is natural gas ‘allowed’ in a ZNE project if it is offset?
Net Positive Energy + Water Conference 2016
The International Living Future Institute (ILFI) recently convened its third annual Net Positive Energy + Water Conference. Hosted this year in San Diego, the event included presentations on cutting edge technologies for energy and water savings, offered case studies from certified and ongoing Net Positive projects, and addressed policy challenges for implementation.
Considerations when specifying foam insulation
Foam insulation in its various forms – polyeurethane (typically sprayed) or polyisocyanurate and polystyrene (typically rigid) – has proven its ability to improve energy efficiency and occupant comfort. With consistent R-values per inch that exceed traditional insulations like fiberglass and cellulose, and the added benefit of better air barrier functionality, foams have become increasingly popular, especially in “green” buildings.
Many Options for Net Zero Homes
As the cost of photovoltaic (PV) solar panels continues to fall, and the impacts of climate change continue to alarm, we find more homeowners pursuing Zero Net Energy (ZNE) homes, with many options for getting there. The trick is to understand a home’s energy demands upfront, to make sure there is adequate area for the PVs, and to improve energy efficiency, which helps keep the PV system ‘right-sized’.