UMMS Solar Installation


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UMMS: Innovation in Healthcare & Solar Energy

Together with Constellation and BithEnergy, the University of Maryland Medical System (UMMS) is taking advantage of solar energy that allows it to serve as a role model for the adoption of clean, sustainable, renewable energy. The solar power is generated from a 3.66-megawatt DC, grid-connected generation project located in Somerset County,Md. 

The electricity generate​d by the solar installation is purchased by UMMS under a 20-year power purchase agreement.  As part of its purchase agreement, UMMS receives Solar Renewable Energy Credits that help satisfy Maryland’s Renewable Energy Portfolio Standard requirements.  

Project Overview

  • ​3.657 MW (DC) ground mounted solar installation
  • 15,540 Yingli polycrystalline photovoltaic solar panels
  • 25 acres of land used for the installation
  • 4,744,000 kilowatt-hours of electricity anticipated to be generated annually
  • 20-year Power Purchase Agreement
  • Full commissioned and serving UMMS as of February 2013
  • Varying amounts of Solar Renewable Energy Credits provided to UMMS

UMMS and Solar

​UMMS is a 12-hospital system with academic, community and specialty service missions reaching every part of the state and beyond with roughly 120,000 annual patient admissions. UMMS is a national and regional referral center for trauma, cancer care, neurocare, cardiac care, women's and children's health and physical rehabilitation. It also has one of the nation's largest kidney transplant programs, as well as scores of other programs that improve the physical and mental health of thousands of people daily.

"Making a positive difference in the communities that we serve goes beyond delivering excellent health care; we must also be good stewards of our environment and resources," said Robert A. Cherncik, president and chief executive officer of UMMS. "The generation of solar energy, coupled with renewable energy credits, not only makes good business sense but exemplifies our commitment to innovation."

Environmental Benefits

The creation of solar energy from this project is expected to save more than 3,347 metric tons of carbon dioxide per year, which is equivalent to 697 passenger vehicles' emissions annually.

Over the contract's 20-year term, this solar installation is expected to save more than 66,940 tons of carbon dioxide, which is the equivalent of:
  • ​13,946 passenger vehicles removed from the road
  • Emissions from the consumption of 155,674 barrels of oil
  • Emissions from the electricity use of 10,021 home annually

Power Purchase Agreement

By financing this project through a 20-year power purchase agreement, Constellation required no upfront capital from UMMS while UMMS was able to keep its power costs fixed at lower than projected market rates.

Constellation built, owns, operates and maintains the solar installation.​ 


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These materials are provided by Constellation NewEnergy, Inc., Constellation Energy Power Choice, LLC, Constellation Energy Gas Choice, LLC, Constellation Energy Services, Inc., Constellation Energy Services – Natural Gas, LLC, or BGE Home Products & Services, LLC (d/b/a BGE Home, Constellation Electric and Constellation Home in Maryland and d/b/a Constellation Home in Pennsylvania and Texas), each a subsidiary of Exelon Corporation. Exelon Corporation also owns Baltimore Gas and Electric Company (BGE), ComEd and PECO energy companies. BGE Home Products & Services, LLC, is not the same company as BGE, the regulated utility. The prices of Constellation are not regulated by any state Public Utility Commission. You do not have to buy Constellation electricity, natural gas or any other products to receive the same quality regulated service from your local utility. Brand names and product names are trademarks or service marks of their respective holders. All rights reserved. Errors and omissions excepted.

Electricity or Gas Supplier License #s: CT DPUC Docket No.99-11-14 07-03-08, 06-02-17; GA PSC License Docket #: 22253, GM-33; IL #s 11-0394, 10-0540, 02-0489; 10-0129, 07-0279, MD License #s IR-228, IR-1853, IR-311, IR-327, IR-500; MA License #CS-045; MI Case #U-14066, U-13660; NJ License #ESL-0016, ESL-0066; GSL-0074; OH #s 00-003E(7); 02-021G(6); PA#s A-125050, A-110036, A-110186; Washington D.C. Supplier License Docket EA01-5, EA-06-5-4, #GA-2012-12, GA-11-5