Planning for the extreme variation in occupancy was an issue the designers dealt with from the start. The home is split into a ˜Living Bar’ and a ˜Sleeping Bar.’ The Sleeping Bar is the expansion module with numerous bedrooms & bathrooms to accommodate the entire family. The Living Bar includes the living and dining areas, as well as a secondary master bedroom – all that the couple needs when the children are away. This programmatic zoning allows the Sleeping Bar to be shut down during the majority of the year to decrease energy use.
The site has a spectacular west-facing view of the water and sunset. The area of west-facing orientation of the glazing used to capture this view certainly isn’t ideal for energy performance. The narrow lot size, combined with the client’s square footage requirements and the obvious desire to be able to take in the view from the primary living space made the un-ideal orientation of the glazing unavoidable. The rest of the building envelope certainly offsets the luxury view. Silvia and Silvia of Osterville are building with double stud framing which allows a continuous layer of foam insulation (uninterrupted by studs). The geothermal system, coupled with a radiant heating system, will supply all of the heating and cooling for the year. Aside from energy efficient appliances and water heaters, ZED worked with lighting consultant Light Th!s to ensure that all of the spaces are well illuminated using energy efficient fixtures. The client also decided to minimize the home’s reliance of fossil fuels. Propane is used only for cooking. There is no natural gas.
The roof sports a large solar electric array installed by NexAmp to offset energy usage through the use of net metering. A battery back-up and energy management system from GridPoint will store electricity from the solar array to ensure the basic functions of the home through blackouts without the use of a gas-powered generator. The combination the energy efficient building envelope and systems with the solar array will allow the home to produce as much energy as it uses over the course of a year! [ ZeroEnergy Design ]