Here are some examples of how we have combined our team’s creativity, technical expertise, and personal touch to bring facilities into the future – and create more efficient, comfortable, productive, and environmentally friendly spaces.
Case Studies


“Not only does PES offer a range of services that make a measurable difference in your bottom line, but they enjoy a well-earned reputation for delivering value-oriented service and providing cost-effective solutions to their clients’ needs. You should start the benchmarking process with people you feel comfortable with for the long term. PES can help optimize your score so you show continuous energy improvement year after year.”
Matt Sutherland
Sales Manager
Elliott-Lewis Corporation, Philadelphia, PA
Partial Client List
Municipal
City of Philadelphia Philadelphia, PA
County of Delaware Media, PA
County of Chester West Chester, PA
Newtown Township Newtown Square, PA
West Chester Borough West Chester, PA
Media Borough Media, PA
Tredyffrin Township Tredyffrin, PA
Malvern Borough Malvern, PA
City of Coatesville Coatesville, PA
Perkasie Borough Perkasie, PA
Upper Gwynedd Township North Wales, PA
Lower Gwynedd Township Spring House, PA
Radnor Township
Springfield Township
Whitemarsh Township
Schools
West Chester Area School District West Chester, PA
Downingtown Area School District Downingtown, PA
Chester County Intermediate Unit Downingtown, PA
Westtown School Westtown, PA
The Hill School Pottstown, PA
Overbrook School for the Blind Philadelphia, PA
Penn Charter School Philadelphia, PA
William Penn School District Lansdowne, PA
Garnet Valley School District Concordville, PA
Norristown Area School District Norristown, PA
Lutheran Theological Seminary Philadelphia, PA
Upper Merion Area School District King of Prussia, PA
Pottsgrove School District Pottstown, PA
Lower Merion School District Ardmore, PA
School District of Philadelphia
Institutional/Nonprofit
Masonic Village of Elizabethtown Elizabethtown, PA
PJM Interconnection Audubon, PA
Devereux Advanced Behavioral Health West Chester, PA
Delaware Valley Regional Planning Commission Philadelphia, PA
Delaware Valley Green Building Council Philadelphia, PA
Westminster Presbyterian Church West Chester, PA
Calvary United Methodist Church Philadelphia, PA
Philadelphia Gas Works Philadelphia, PA
The Reinvestment Fund Philadelphia, PA
Camphill Soltane Glenmoore, PA
Commercial/Industrial
Vertex, Inc. Berwyn, PA
GGA Construction Middletown, DE
Ballard Spahr Philadelphia, PA
Bentley Systems Exton, PA
Sikorsky Helicopter Coatesville, PA
United Technologies East Hartford, CT
Liberty Property Trust Philadelphia, PA
QVC Inc. West Chester, PA
Oliver Heating, Cooling, Plumbing & Electrical Morton, PA
Aztec Solar Wayne, PA
Delaware Valley Concrete Hatboro, PA