The University of Pennsylvania is the top Green Power user in higher education, and the Chicago public school system is the top user among K-12 systems, the U.S. Environmental Protection Agency says.

The EPA released its latest Green Power Partnership rankings earlier this month—the top 20 K-12 school systems, and the top 20 colleges and universities. Six universities report annual green power use of more than 100 million kilowatt hours.

“The combined green power use of these organizations amounts to more than 1.7 billion kilowatt-hours of green power annually, which is equivalent to avoiding the carbon dioxide emissions from the electricity use of more than 182,000 average American homes annually,” the EPA says of the top higher-education institutions.

The top colleges and universities:

  • University of Pennsylvania, Philadelphia, 200,194,600 kilowatt hours
  • University of Oklahoma, Norman, 153,878,040 kilowatt hours
  • Ohio State University, Columbus, 141,000,000 kilowatt hours
  • Carnegie Mellon University, Pittsburgh, 116,015,000 kilowatt hours
  • Georgetown University, Washington, D.C., 113,751,000 kilowatt hours
  • Oklahoma State University, Stillwater, 110,000,000 kilowatt hours
  • Northwestern University, Evanston, Ill., 96,019,800 kilowatt hours
  • University of Utah, Salt Lake City, 93,374,904 kilowatt hours
  • Drexel University, Philadelphia, 84,268,000 kilowatt hours
  • University of Tennessee, Knoxville, 80,020,000 kilowatt hours
  • University at Buffalo, Buffalo, N.Y., 77,365,000 kilowatt hours
  • University of Wisconsin, Madison, 69,772,834 kilowatt hours
  • Apollo Group/University of Phoenix kilowatt hours
  • City University of New York, 64,000,000 kilowatt hours
  • American University, Washington, D.C., 55,033,500 kilowatt hours
  • Texas A&M University, College Station, 45,900,000 kilowatt hours
  • Catholic University of America, Washington, D.C., 43,000,000 kilowatt hours
  • Western Washington University, Bellingham, Wash., 40,000,000 kilowatt hours
  • Quinnipiac University, Hamden, Conn., 40,000,000 kilowatt hours
  • University of St. Thomas, St. Paul, Minn., 32,871,000 kilowatt hours

At the K-12 level, the Chicago school system is far and away the leader in green power use among those participating in the partnership. The district’s annualized total of 107 million kilowatt hours is more than five times that of the next-largest user.

The top K-12 school systems:

  • Chicago district, 107,709,620 kilowatt hours
  • Austin (Texas) district, 20,080,000 kilowatt hours
  • Round Rock (Texas) district, 15,567,000 kilowatt hours
  • Taft School, Watertown, Conn., 4,503,000 kilowatt hours
  • Sidwell Friends School, Washington, D.C., 4,237,446 kilowatt hours
  • Arlington County (Va.) district, 3,072,000 kilowatt hours
  • The Chapin School, New York City, 2,888,000 kilowatt hours
  • The Hotchkiss School, Lakeville, Conn. 2,400,000 kilowatt hours
  • The Bullis School, Potomac, Md., 2,313,404 kilowatt hours
  • The Dalton School, New York City, 2,100,000 100 kilowatt hours
  • Euphemia L Haynes Public Charter School (Georgia Ave.), Washington, D.C. 2,058,767 kilowatt hours
  • Lake Travis (Texas) district, 1,956, 000 kilowatt hours
  • Lycee Francais of New York, New York City, 1,918,273 kilowatt hours
  • Spence School, New York Cityi, 1,890,000 kilowatt hours
  • Euphemia L Haynes Public Charter School (Kansas Ave.), Washington, D.C., 1,863,726 kilowatt hours
  • Norwood School, Bethesda, Md., 1,794,400 kilowatt hours
  • Harmony Public Schools (charter group), Houston, 1,736,341 kilowatt hours
  • Spirit Lake (Iowa) district, 1,569,585 kilowatt hours
  • Maret School, Washington, D.C., 1,500,000 kilowatt hours
  • The Brearley School, New York City 1,392,660 kilowatt hours