WEST CHESTER, Pa.--(BUSINESS WIRE)--Constellation, a leading competitive retail energy supplier, and Chester County today announced the completion of a project involving the installation of $5.9 million in energy and water conservation measures that is expected to provide $6.7 million in energy and water cost savings over a 15-year period. The conservation measures will help the County save an estimated 2.2 million kilowatt-hours in electricity and more than 18 million gallons of water every ye
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