District Energy St. Paul is a nonprofit utility providing energy services to downtown Saint Paul. The heating and cooling network serves more than 200 buildings in the central business district and across the river to a secondary area of commercial, light industrial, and residential development. The customer base includes higher education, hospitals, Fortune 500 companies, and multi-family residential as well as hotels, entertainment, and sporting venues.
Developed as a public-private partnership, District Energy has worked closely with the City of Saint Paul, Saint Paul Port Authority, local businesses leaders, and civic partners to offer competitive energy solutions and cost-based rates that have played a critical role in development for the city.
Heating and cooling customers pay less for energy today than they did when the system started, when adjusting for inflation.
District Energy has become a showcase for energy efficiency through continued efforts to evolve, reinvent, and integrate sustainable solutions that have earned the operations a global reputation, including recognition from the United Nations Environment Programme.
District Energy is the parent company to Ever-Green Energy and has contracted the Ever-Green team to provide operations and management services for the District Energy operations.
Ever-Green has built a deep knowledge of utility and energy system management from the decades of experience with this flagship system.
Ever-Green provides comprehensive operation and management services, energy engineering, and project management, as well as business operations, finance, legal, and customer and community outreach.
|Buildings served with district heating||195|
|Single family homes||298|
|Current billed demand||177 megawatts|
|Total building area served||32.2 million square feet|
|Six gas/oil-fired boilers||194 MW|
|Combined heat and power plant||65 MW|
|Regions Hospital Plant (gas/oil-fired)||25 MW|
|Mobile boilers (temporary and/or backup)||7.5 MW|
|Solar thermal||1.2 MW|
|Piping Materials||Prefabricated steel pipe with polyurethane insulation encased in polyethylene jacket|
|Diameter||3/4-inch to 28-inch|
|Supply Temperature||Supply Temperature|
|Return Temperature||140-160 degrees F|
|Supply Pressure||180 psi|
|Buildings served with district cooling||102 buildings|
|Building Area Served||19.4 million sq. ft.|
CHILLED WATER SOURCES
|Main plant, 76 West Kellogg Boulevard|
|Seven electric chillers||15,387 tons|
|10th and Sibley Plant|
|Three electric chillers||7,000 tons|
|Chilled water storage systems||10,800 tons|
|Satellite chillers||5,000 tons|
|Piping Materials||Steel pipe wrapped in protective coating with cathodic protection|
|Diameter||3-inch to 30-inch|
|Volume of distribution system||1,115,000 gallons|
|Volume of storage system||6,700,000 gallons|
|Supply Temperature||42 degrees F|
|Return Temperature||56 degrees F|
|Supply Pressure||150 psi|
|Minimum pressure differential||15 psi|