Northern Power Lands CHP Contract for Post Office

[] Northern Power Systems has been awarded a US$3.1 million contract by Honeywell to provide a turnkey on-site combined heat and power (CHP) system for the United States Postal Service (USPS) Margaret L. Sellers Processing and Distribution Center (P&DC) in San Diego, California. The facility is the main mail handling facility for the San Diego district and supports more than 40 post offices within the performance cluster. The CHP system will be the first co-generation system installed under the energy savings performance contract between Honeywell and the USPS that covers the Southern California USPS sites. The system will also be the first of its kind at a USPS distribution center. The turnkey CHP system will provide 1.5 MW of electricity in normal operation; an amount equal to 85 percent of the Sellers facility’s forecasted power requirements. Recovered heat from the engine’s exhaust system will be used as input thermal energy for a 300-ton absorption chiller, which will, in turn, provide cooled water to the facility’s heating, ventilation, and air conditioning (HVAC) system. The new chiller will replace the facility’s existing natural gas-fired absorption chiller and eliminate the need to purchase over 165,000 therms of natural gas annually. In total, the Honeywell-led work is expected to deliver $4.1 million in energy savings per year. It also will allow the Postal Service to reduce annual energy consumption by almost 30 million kilowatt hours (kWh) — enough energy to power almost 4,000 homes for a year.
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