Big Green Zero Team
Big Green Zero is an energy efficiency engineering team. We provide the Big Green Zero Energy Assessment™ to reduce energy bills in businesses and commercial buildings.
Our goal is to reduce energy cost by 20 - 40%, with little or no capital investment. And, where appropriate, to integrate energy efficiency and clean, renewable solar power to make a grid utility bill a Big Green Zero.
Robert Roth, Ph.D.
Bob Roth is co-founder and CEO of Big Green Zero, energy efficiency consultants. Big Green Zero provides energy assessments that reduce commercial energy bills and is developing the next generation of do it yourself energy efficiency tools.
Jim Burpee, CEM
Jim Burpee is a co-founder and Chief Engineer of Big Green Zero. Jim has played a lead role in developing Big Green Zero's unique energy assessment methods and supporting software. Jim is pioneering new and better methods for helping commercial and residential energy customers achieve a small, green energy bill.
Brian A. Spencer, AIA IAA PAACH
As Big Green Zero’s Principal Architect, Brian Spencer is advancing the integration of sustainable energy into the philosophy and practice of sustainable architecture. This integration is supporting BGZ clients in their efforts to create healthier, more productive environments and to achieve small, green energy bills.
Clarisoft Technologies
Big Green Zero has partnered with Clarisoft Technologies to build the online Big Green Zero Energy Assessment.
The 
Clarisoft team innovates software, custom websites, social media platforms, mobile applications and enterprise-level platforms for clients ranging from startups to Fortune 500 companies.
Bogdan Bucura, CEO of Clarisoft Technologies is serving as Big Green Zero's interim Chief Technology Officer.