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Decade of Accomplishments


December 31, 2019

Our Decade in Review

Over the past 10 years, Gatter & Diehl has worked diligently on maintaining a more diverse and influential company by implementing the latest and most advanced energy efficient technologies. This emphasis has led to extraordinary breakthroughs that included designing one of Pennsylvania's largest public education solar array installations and winning the Pennsylvania State Governor's Award for Environmental Excellence three consecutive years.


With a keen focus on designing renewable, alternative and clean energy systems, we implement cost effective solutions for our clients while decreasing their carbon footprint. The results have directly culminated in achieving millions of dollars in Grants, Incentives, and Rebates through programs such as Act 129, Department of Community and Economic Development and others. In addition, we have designed over 25 USGBC LEED projects in the past decade which achieved either Platinum or Gold levels.


None of our accomplishments would be possible without our talented and motivated staff. We take great pride in providing our staff with numerous opportunities to have the latest education in state-of-the-art energy efficient systems through educational courses, training seminars, and conferences administered across the country. 


As we enter the next decade, we reflect on our achievements from the last 10 years and focus our efforts of improving our company for the next 10 years and beyond. As technology constantly evolves, we continue to pursue advancements in engineering, energy, and design industry to satisfy our client’s needs and promote a higher quality of life for the people we serve.

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Highlights of Projects, Specialty Services, and Other Accomplishments

  • Designed Over 500 Projects

  • Designed Over 35 Geothermal Projects

  • Designed Over 25 USGBC LEED Projects Earning Gold or Platinum Rating

  • Achieved LEED Platinum & Gold for the Carlisle Area Lamberton & Wilson Middle Schools

  • Designed Cumberland Valley School District's Solar PV Array System with over 5,000 Solar Panels

  • Designed a 160-Bore Geothermal System for the Bedford Area Middle School

  • Designed 372,000 sq. ft. of Space for Presbyterian Senior Living Long Community at Highland Utilizing Geothermal Technology

  • Designed a Micro-Turbine Tri-Generation System for Phoenix Contact USA that affected 360,000 sq. ft.

  • Designed a Solar Charging Carport Prototype for Phoenix Contact USA

  • Achieved Over $12 Million in Grants, Incentives, and Rebates

  • Presented to the United States Congress & U.S. Department of Energy

  • 3x Winner of the Pennsylvania State Governor's Award for Environmental Excellence (2014-2016)

  • Invited to Speak at the Pew Research Center

  • Recognized with the Most Successful Community Engagement Award

  • Reinstated Full Healthcare Benefits, Life insurance, Short- & Long-Term Disability Plans, & 401K Company Matching Contributions for Our Employees

  • Implemented New Gatter & Diehl Headquarters in Mechanicsburg, PA

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