A California State Lottery District Office in Santa Fe Springs retrofitted its building to target zero net energy. The state added daylighting, increased the efficiency of the building envelope, and installed a rooftop photovoltaic system. And the design team added prismatic-lens skylights and solar tubes—as well as interior glass walls and exterior glass curtain walls—to provide even, natural light. The team also improved the building envelope using insulation and window glazing to save energy and allow for a smaller HVAC system. The HVAC system uses a variable air volume system and intelligent controls to adjust frequency and volume of air released to avoid overheating and overcooling. In the office lobby, a dashboard shows real-time energy data to encourage staff and visitors to save energy.
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