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 buyers serving as faculty. The LESSEN training is offered through multiple online sessions covering foundational knowledge and project specific education. REBA 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 supplychain@rebuyers.org

LESSEN Faculty

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

Previous LESSEN faculty include:

Bruce Frandsen

Director, Global Renewable Energy and Cleantech, Equinix

Chris Pennington

Energy Manager
Iron Mountain

Illina Frankiv

Global Energy Program Manager
WeWork

Kirby Brendsel

Assistant Vice President, Sustainability & ESG,
Welltower

Mike Mattera

Director, Corporate Sustainability
Akamai Technologies