Who Is SPS?

Sustainable Performance Solutions LLC (SPS) is a South Florida-based engineering firm whose practice is limited to energy and sustainability consulting. The firm provides all levels of energy audits; general energy efficiency and sustainability studies; energy modeling; assistance with Green Globes, LEED®, Energy Star, Florida Water Star certifications and EO 13514 compliance for federal facilities; and high performance building commissioning services.

The firm’s principal, Lawrence (Larry) Clark, previously served as Director of Corporate Business Development at Hill York – at that time, Florida’s largest independently-owned mechanical contractor -- and was actively engaged with its Hygreen Energy Solutions group from launch in early 2008 until he formed SPS in September 2010. His previous experience includes such diverse assignments as president, vice president, and regional manager at MEPCO (formerly the Dunham Division of Dunham-Bush); and regional manager at Vapor Power, when it was part of Westinghouse Air Brake. Clark is a graduate engineer (B.S.E.E.), a certified Green Globes Professional, a LEED® AP with O+M specialty credential, a Certified Commercial Energy Auditor; a Florida Water Star Certifier; a Qualified Commissioning Process Provider (QCxP); and a Certified Guiding Principles Compliance Professional.


Clark is the author of more than two dozen HVAC and energy related articles, is a frequent presenter and lecturer on a variety of green building topics, and is on the faculty of Lorman Education Services. He also writes the semi monthly “Clark’s Remarks” blog for HPAC Engineering and is a member of various professional organizations including ASHRAE, IEEE and USGBC South Florida (2011-2012 chair of Broward Green Schools Committee, 2014-2015 Chapter Advocacy chair, and current member of Board of Directors). In addition, he serves on the BOMA Florida Energy Committee, HPAC Engineering’s Editorial Advisory Board, and the Smart Growth Partnership Board of Directors. Clark previously served on- the Green Building Certification Institute (GBCI) Education Review Team, served six years on the City of Pompano Beach Recycling & Solid Waste Advisory Committee, and presently serves on the City of Fort Lauderdale Sustainability
Advisory Board.


  • LEED Charrette Facilitator
  • Green Globes Professional
  • Certified Energy Auditor (Commercial)
  • Florida Water Star Commercial and Institutional Certifier
  • QCxP
  • Guiding Principles Compliance Professional
  • Certified County Business Enterprise (CBE), Broward County, Florida
  • Certified Small Business Enterprise (SBE), Broward County, Florida
  • Federally-Certified Veteran-Owned Small Business
  • Certificate of Authorization, Florida Board of Professional Engineers
  • Licensed CAM CE Provider, Florida Department of Business and Professional Regulation

INSURANCE: $2,000,000+ PRIMARY NAICS: 541690 CAGE: 68NU4 D-U-N-S: 946147837
CONTACT INFORMATION: info@SustainFlorida.com or phone 570-854-1199


Revised 2-1-16