Delta Achieves Sustainability Using Its Own Products at Corporate Headquarters

Delta Achieves Sustainability Using Its Own Products at Corporate Headquarters

This piece was originally published in the April 2016 issue of ei, the magazine of the electroindustry.

By Joe Oberle, Vice President, Corporate Development, Delta Products Corporation

The building uses a 616-kW rooftop solar system capable of producing more than 1,000 Mwh annually. Photos courtesy of Delta Products Corporation.
The building uses a 616-kW rooftop solar system capable of producing more than 1,000 Mwh annually. Photos courtesy of Delta Products Corporation.

When Delta Products Corporation opened its new Americas headquarters in Fremont, California, in October 2015, the state-of-the-art, 180,000-square-foot facility met LEED[1] Platinum and net-zero standards while incorporating many of Delta’s own technologies to achieve an elite level of sustainability.

The new facility is built on a 15.5-acre campus and has three structures, including an office building, warehouse, and lobby. To meet net-zero criteria, the complex is powered by a 616-kW solar system using the company’s own solar inverters that have an energy conversion efficiency of up to 98.5 percent. It expects to generate more than 1,000 MWh of electricity per year. Additionally, the headquarters boasts a geothermal heating and cooling system that reduces HVAC energy consumption by 60 percent compared to traditional systems.

The facility’s geothermal heating and cooling system uses a ground source heat pump connected to a loop field of pipes located up to 30 feet underground. The pipes cover an area greater than five football fields. Heat is transferred to or from the ground to boost efficiency and achieve the 60-percent reduction in energy consumption compared to traditional HVAC systems. The ground-source heat pump loops into the building’s bidirectional radiant floor and ceiling tubes embedded in the concrete slabs. In total, there are more than 92 miles of pipe circulating 12,000 gallons of water.

According to Bruce Cheng, Delta’s founder and honorary chairman, all of Delta’s new buildings around the world have been built to high standards of sustainability since 2005.

“In the past 10 years, we have commissioned the construction and renovation of 21 green buildings,” he said. “This aligns with the company’s mission to provide innovative, clean, and energy-efficient solutions for a better tomorrow.”

On the campus, there are also 19 7-kW electric vehicle (EV) charging stations and a site management system with features that include delay timers for off-peak EV charging, radio-frequency identification (RFID) card readers for user identification, and wired and wireless network communication capabilities for back-office integration. There is also a 50-kW duel-standard DC fast charger, capable of providing a full charge in less than 30 minutes for passenger EVs.

More than 92 miles of pipe circulate 12,000 gallons of water throughout the facility.
More than 92 miles of pipe circulate 12,000 gallons of water throughout the facility.

Other Delta products and solutions include

  • photovoltaic inverters,
  • energy-saving variable frequency drives,
  • industrial automation products,
  • datacenter infrastructure solutions, and
  • wireless outdoor LED lighting.

In addition to optimizing energy usage, the facility features a 140,000-gallon rainwater harvesting system for irrigation, while the uncollected rainwater will be directed to a bioswale. Moreover, 20 percent of the building materials are reclaimed.

Prior to joining Delta, Mr. Oberle was a general manager at General Electric for 25 years, working in lighting technologies and transportation.


[1] LEED (Leadership in Energy and Environmental Design) is a third-party certification program developed by the U.S. Green Building Council.

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