We are in design on a new passive house for challenging site and program in north Arlington, Virginia. A steeply sloping hill falls away to the east. The house will be placed along the north side of the site to take advantage of an existing plateau in the yard. This will also give maximum solar exposure for winter solar heating and rooftop photovoltaic panels. The house will have two entrances: one to the office located at street level, and one for the main house at the terrace level. The upper entrance will also serve as the wheelchair entrance for this fully accessible home.
We will be using double wall construction with an EIFS system at the exterior. What makes this house unusual is the electrical system: the house is designed to be an energy island when the grid is down. We will use the Pika Islanding Inverter and its 15kW Harbor battery to power critical loads when the grid is down. The beauty of the Pika system is that, unlike most pv systems, the 12kW pv system (sized to achieve NZE) can continue to power the house when the grid is down. The Pika system also allows up to set up a hybrid ac-dc nanogrid within the home, taking advantage of the energy savings of direct current. To learn more about the developments in direct current, see this blog post.
Construction will begin in the fall of 2018.
- Date October 10, 2016
- Category Aging in Place, New Homes, Passive Houses