U.S. District Energy Services Market Characterization · 2018. 2. 14. · February 2018 U.S. Energy...
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U.S. District Energy Services Market Characterization
February 2018
Independent Statistics & Analysis
www.eia.gov
U.S. Department of Energy
Washington, DC 20585
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U.S. Energy Information Administration | U.S District Energy Services Market Characterization i
This report was prepared by the U.S. Energy Information Administration (EIA), the statistical and
analytical agency within the U.S. Department of Energy. By law, EIA’s data, analyses, and forecasts are
independent of approval by any other officer or employee of the United States Government. The views
in this report therefore should not be construed as representing those of the U.S. Department of Energy
or other federal agencies.
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February 2018
U.S. Energy Information Administration | U.S District Energy Services Market Characterization 1
U.S. District Energy Services Market Characterization In a district energy system, a central plant or plants produce steam, hot water, or chilled water, which is
then pumped through a network of insulated pipes to provide space heating, cooling, and/or hot water
for nearby connected customer buildings. The U.S. Energy Information Administration (EIA) contracted
this report from ICF L.L.C. to inform modeling and analysis of domestic district energy systems.
District energy allows customers to save space and expenses by avoiding individual installation,
operation, and maintenance of in‐building heating, cooling, and water‐heating equipment. Using
economies of scale, district energy systems often distribute heat generated by combined heat and
power (CHP) systems to use thermal energy that is produced more efficiently. District energy systems
are more commonly found in commercial clusters of buildings such as colleges, hospitals, downtowns,
healthcare, and government campuses.
ICF worked with the International District Energy Association’s (IDEA) database of 660 existing district
energy systems operating in the United States. In 2012, an estimated 5.5 billion square feet of heating
floorspace and 1.9 billion square feet of cooling floorspace were serviced by district energy. District
energy characteristics are provided by Census division (Table 1) and by fuel type (Table 2).
Table 1. Share of U.S. district energy by Census division
Census division
Heating gross square footage
served
Cooling gross square footage
served
New England 350,911,392 95,141,891
Middle Atlantic 1,497,478,221 200,603,217
East North Central 991,553,018 395,790,579
West North Central 570,177,893 158,611,465
South Atlantic 813,768,087 288,977,364
East South Central 158,622,454 94,156,827
West South Central 359,938,693 316,360,508
Mountain 188,521,265 117,605,771
Pacific 520,343,083 210,321,556
Total 5,451,314,105 1,877,569,178
* Note that heating and cooling gross square footage overlap for many systems, so the regional amounts are not additive.
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February 2018
U.S. Energy Information Administration | U.S District Energy Services Market Characterization 2
Table 2. Share of U.S. district energy fuel use by fuel type
Fuel Non‐CHP heating
(MMBtu) Non‐CHP cooling
(MMBtu) CHP
(MMBtu) Total (MMBtu) Percent of
total fuel use
Coal 58,998,023 0 97,000,378 155,998,401 16%
Electricity 0 14,238,482 0 14,238,482 1%
Natural gas 372,251,735 6,049,694 342,242,633 720,544,063 74%
Oil 11,160,227 13,135 13,980,363 25,153,725 3%
Other (Biomass) 19,729,303 0 42,209,336 61,938,639 6%
Total 462,139,288 20,301,311 495,432,710 977,873,309 100%
When referencing the contract report, it should be cited as a report by ICF L.L.C. and the International
District Energy Association prepared for the U.S. Energy Information Administration.
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February 2018
U.S. Energy Information Administration | U.S District Energy Services Market Characterization 3
APPENDIX
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*Note that many district energy systems provide both heating and cooling services to the same buildings,
therefore the GSFs for heating and cooling in the table above contain some overlap and are not additive.
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This slide is intended to show background data on market share.
References:
https://www.eia.gov/consumption/commercial/data/2012/bc/cfm/b34.php
https://www.eia.gov/consumption/commercial/data/2012/bc/cfm/b35.php
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Middle East growth: https://www.gminsights.com/industry-analysis/middle-east-district-cooling-market
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Hartford Constitution Plaza: http://www.scrapmonster.com/company/hartford-steam-co/45876
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• Cleveland: http://www.corix.com/cleveland-thermal/district-energy
• Minneapolis: http://www.nrg.com/business/large-business/thermal/projects/minneapolis/
• St Paul: http://www.districtenergy.com/
• Toronto: http://enwave.com/locations/toronto/
• Comfortlink, Baltimore (purchased by Veolia): http://www.environmentalleader.com/2010/02/veolia-
buys-comfort-link-enters-ice-thermal-storage-biz/; https://www.veolianorthamerica.com/en/case-
studies/baltimore-md-district-heating-and-cooling
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• American College and University Presidents’ Climate Commitment: http://secondnature.org/wp-
content/uploads/Carbon-Commitment_Charter-Signatories.pdf
• UMass Amherst:
http://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1001&context=csi&_ga=2.51931179.380859
945.1515006481-747043175.1515006481
• Princeton: https://facilities.princeton.edu/node/1471;
https://www.princeton.edu/news/2011/02/02/princeton-install-powerful-solar-collector-field
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District cooling systems provide chilled water service to customer buildings for air conditioning. This allows
the customer to have a flatter load profile year round and to substantially reduce peak power demand from
onsite equipment like chillers and cooling tower pumps and fans. Cutting demand for expensive peak
power during high summer load condition reduces strain on the local power grid and improves system
reliability and load factor for the local electricity provider. District cooling systems are also able to provide
cooling via thermal storage, heat-based chilling, or renewable cooling sources like lakes, oceans, or rivers
that would otherwise not be feasible on an individual building basis.
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Trends with a plus sign are considered to be positive (+)
Trends with a minus sign are considered to be negative (-)
Trends with a plus and minus signs are neutral (+/-)
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• MA Green Communities Act: https://malegislature.gov/Laws/SessionLaws/Acts/2008/Chapter169
• Alternative Portfolio Standard: https://www.mass.gov/service-details/program-summaries
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• HEAT Act: https://www.congress.gov/bill/115th-congress/senate-bill/1711/text?r=1
• Grid Storage Act: https://www.govtrack.us/congress/bills/115/s1851
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• Treatment of District or Campus Thermal Energy in LEEDV2 and LEED 2009 – Design & Construction:
https://www.usgbc.org/sites/default/files/DES%20Guidance.pdf
• CHP- Equipped District Energy: A Winning Strategy for LEED® and PEER:
https://www.epa.gov/sites/production/files/2017-01/documents/chp-equipped-district-energy.pdf
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• Assumptions for oil and coal are based on relative positioning compared to natural gas in US DOE
EERE Energy Tip sheet #15 “Benchmark the Fuel Cost of Steam Generation:”
https://energy.gov/eere/amo/tip-sheets-system
• Assumptions for biomass are based on input from IDEA interviews with engineering firms.
• Assumptions for heating distribution losses in 2012 are based on EPA Energy Star Portfolio Manager
Technical Reference on Source Energy:
https://portfoliomanager.energystar.gov/pdf/reference/Source%20Energy.pdf
• Estimates on distribution system improvements over time are based on interviews with engineering
firms and district energy system operators.
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Magnetic bearing chiller compressors: https://energy.gov/eere/femp/magnetic-bearing-chiller-compressors
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Industry-reported data on annual additions of customer building space since 2005 shows continued growth.
Average annual growth (2012 – 2016) = 37.2 million sq ft. or approximately 0.65% growth per year.
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• Projections of gross square footage are based on an estimated average annual increase in square
footage using data reported to IDEA during the most recent five year period (2012-2016), which
resulted in 37.2 million square feet of average growth overall.
• With that estimate and an estimate of the total square footage served in 2012, we derive a baseline
growth rate of 0.65% per year to use as the starting point for projections.
• Next, we estimate total square footage steam heating, hot water, and cooling capacity in the year 2012
and apply estimated percent annual increases for ten year periods up to 2020, 2030, 2040, and 2050
based on trends for steam, hot water, and cooling capacity identified by ICF and IDEA in conversations
with district energy stakeholders.
• In general, trends reflect modest growth in square footage served by district energy, with a gradual
transition from steam to hot water heating systems and a steady increase in cooling capacity.
• For more information on the technology developments, improvements in operations and maintenance,
end-use sector growth, and the policy landscape that informed these forecasts, see earlier section,
“Trends Impacting the District Energy Market.”
• *Note that the majority of cooling square footage is in shared systems (87%) and includes some of the
same space as steam heating. Our estimate of total square footage includes total steam heating and
hot water square footage and an estimate of square footage used ONLY for cooling to avoid double
counting of square footage in shared systems.
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For more information on the technology trends and improvements in operations and maintenance that
informed these forecasts, see earlier section, “Trends Impacting the District Energy Market.”
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For more information on the technology trends and improvements in operations and maintenance that
informed these forecasts, see earlier section, “Trends Impacting the District Energy Market.”
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• Shands: http://relaymagazine.org/gru-serves-shands-cancer-center-reliable-microgrid
• Shipyard: http://www.ameresco.com/portfolio-item/portsmouth-naval-shipyard/
• Princeton: https://facilities.princeton.edu/news/the-princeton-energy-plant
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Enwave Seattle: http://enwaveseattle.com/
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• Campus Solar: http://www.energydigital.com/top-10/top-10-which-campuses-take-cake-solar-energy
• Princeton: https://facilities.princeton.edu/news/the-princeton-energy-plant
• MIT: http://web.mit.edu/facilities/environmental/beep.html#renewables;
http://web.mit.edu/facilities/about/maint-util/utilities/index.html
• ASU: https://wikivisually.com/wiki/Az_state_university; https://asunow.asu.edu/content/sun-devils-soak-
solar-power
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• UMass Amherst Solar Hot Water: https://www.umass.edu/sustainability/climate-change-
energy/solar/central-heating-plants-solar-hot-water-system
• DE St. Paul: http://www.districtenergy.com/technologies/solar-thermal/
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Ball State: http://cms.bsu.edu/about/geothermal; http://www.districtenergy-
digital.org/districtenergy/2017q4?search_term=ball%20state&doc_id=-
1&search_term=ball%20state&pg=16#pg16
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Detroit Thermal MSW: http://detroitthermal.com/renewable-energy/
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• TwentyNine Palms: http://greenfleet.dodlive.mil/files/2010/04/29-Palms.pdf
• TwentyNine Palms: http://www.decengineers.com/dec-projects/military/project-4/
• Hudson Yards: https://www.smartcitiesdive.com/ex/sustainablecitiescollective/planning-smarter-cities-
developing-district-energy/158906/
• Hudson Yards: https://thermaxprofetherm.wordpress.com/2016/05/16/thermaxs-chiller-heaters-for-new-
yorks-hudson-yards-redevelopment-project/
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• Rochester: https://www.emcorbetlem.com/case-studies/rochester-district-heating
• Princeton: http://www.sofame.com/home.htm
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• Stanford:
https://www.districtenergy.org/HigherLogic/System/DownloadDocumentFile.ashx?DocumentFileKey=f4
d12883-8cd0-62fd-5860-24f29c94819d&forceDialog=0
• U Rochester:
• https://www.facilities.rochester.edu/central_utilities/
• http://www.urecon.com/documents/pdfs/projects/IDEA_UofR.pdf
• http://www.fvbenergy.com/projects/university-of-rochester-system-expansion-and-conversion/
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• Veolia: Veolia Energy Baltimore owns and operates over 15 miles of steam distribution piping that
serves over 250 commercial, government, institutional, and hospitality customers.
• Rowan: Crews removed and disposed of all existing insulation from the steam, condensate, and drip
piping prior to measurement, manufacture, and installation of RICs.
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Temple: https://insulation.org/io/articles/insulation-passes-the-test-at-temple-university/
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Amazon: https://dbdh.dk/district-energy-and-amazons-hq2-decision/
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