The Renewable Energy Buyers Alliance is now the Clean Energy Buyers Association. Read Press Release

The LESsor Sustainable Energy Network (LESSEN) is a complimentary 3-month training program for data center and real estate owners and operators to learn how to develop a successful sustainable energy strategy and progress toward energy goals. The program creates a community of practice among attendees through ongoing engagement with experienced large-scale energy customers serving as faculty. The LESSEN training is offered through multiple online sessions covering foundational knowledge and project specific education. CEBA membership is not required for participation. Learn more about the upcoming program here.

LESSEN provides a deep-dive into the fundamental components of sustainable energy strategy, including:

Who should participate in LESSEN?

The next LESSEN season will start in Fall 2021 and provide attendees with knowledge to move forward on their own, in a demand-aggregated group, or through engagement with external consultants for tailored support.

To learn more about LESSEN or reserve your space, contact

LESSEN Faculty

LESSEN faculty are data center and commercial real estate professionals who also have extensive energy efficiency and renewable energy buying experience. Contact if you are interested in serving as faculty. 

Previous LESSEN faculty include:

Bruce Frandsen

Director, Global Renewable Energy and Cleantech

Chris Pennington

Energy Manager
Iron Mountain

Illina Frankiv

Global Energy Program Manager

Kirby Brendsel

Assistant Vice President, Sustainability & ESG

Mike Mattera

Director, Corporate Sustainability
Akamai Technologies