Senior Market Advisor
Southern California Gas Company
Southern California Gas Company (SoCalGas), Brookfield Residential Properties, and the Los Angeles Department of Water and Power (LADWP) partnered to demonstrate a commercial near-Zero Net Energy (near-ZNE) project (The Resort) in Playa Vista, California.
This case study presents the two-year test results following up a previous publication (Shiau & Wang 2017). The results indicate that the energy efficiency and environmental benefits of a high performance and LEED Platinum® building can be further enhanced by incorporating a variety of energy efficiency measures and self-generation, including combined heat and power (CHP) and photovoltaics (PV.)
The Resort is a 25,000 square-foot resident club with fitness rooms and ancillary outdoor swimming pools. It is LEED certified 2009 Platinum® for New Construction and features passive ventilation, green roofs, variable refrigerant heat pumps, natural gas fired water heaters, space and pool heaters.
The facility has onsite generation including a 62.5 kW PV system for assigned loads. A 75kW combined heat and power serves the remaining loads, which are separately metered.The CHP generation output to the grid is limited.
The facility’s calculated operating Time Dependent Valuation (TDV) of all actual and aggregated loads exceeded the modeled 2010 compliance TDV, suggesting that current ZNE initiatives should consider campus-based solutions for buildings with significant operating process loads to include onsite generation credits from both CHP and PV.
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