Phillips Eco-Enterprise Center

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Large solar electric array, geothermal, extensive day-lighting, and recycled and salvaged materials on a modern office building. Extensive day-lighting strategies are employed, saving energy and improving performance with broad-spectrum natural light. Heating needs are met partially with a geothermal heat pump, which circulates fluid deep down in the earth where it either gains or loses heat depending on the original temperature.

System Components

34 kW solar PV array
Geothermal heat pump
Use of extensive passive solar strategies
Solar tracking skylights

Additional Measures

Extensive use of recycled and salvaged building materials
Extensive rainwater catchment system for future rooftop planting
Drought-resistant native plants

System Designer: Darryl Thayer
System Installer: Innovative Power Systems

Date of Installation Completion: 2004

System Cost, Payback, and Financial Incentives Utilized

$195,000 (approximately $5.73 per watt); 30-year payback

Anticipated Energy Delivery When Purchased

40,000 kWh/year or 3,500 kWh/month

Percentage of Total Energy Needs Delivered:

25% of office electric needs