Solar energy developed with the highest standards

The Belleville Landfill Project is among the nation's largest solar energy facilities to be developed on a capped landfill. Together, with Republic Services and HeartLand Conservancy, AES is reimagining what it means to develop renewable energy. 

About the Belleville Landfill Project


  • Capacity: 13.28 MW
  • Location: Belleville, Illinois 
  • Land use: Repurposing Republic Services' capped Belleville landfill facility into a renewable energy solution 
  • Impact: AES employed approximately 120 local workers over the course of construction, 50% of those workers were from local Union Labor organizations 
    • Enough energy generated to power the equivalent of 2,167 homes with electricity for one year 
      • AES will contribute approximately $1.2 M in local property taxes over the project's lifetime

Featured speakers

Joshua Mayer

Joshua Mayer 

Manager, Project Development at AES Clean Energy

Joshua Mayer has been working at AES for seven years in business development and project development, with a focus on community solar, solar plus battery storage and landfill-sited solar project opportunities. His efforts to develop the Belleville landfill solar project in collaboration with Republic Services began in late 2017. Prior to AES, Josh spent several years working in international development as a Peace Corps volunteer in Ecuador and as a sustainable agriculture consultant in Nicaragua. He graduated with a BS and MS in International Business from Aalto University in Helsinki, Finland.

Kim OBryan

Kim O'Bryan

Director of Development & Events, HeartLands Conservancy

Kim is responsible for HeartLands’ events, membership program, corporate partnerships and fundraising. She has a background in marketing and advertising, and has served on numerous committees and boards throughout southwestern Illinois.


Brian Martz

Director of Renewable Energy Development, Republic Services

Brian Martz is Director of Renewable Energy Development for Republic Services. Martz first joined the company in 2003 as an Environmental Manager in Birmingham, AL, with Allied Waste, which merged with Republic Services in 2008. He spent 10 years in the Engineering Department, advancing to Director of Engineering. He moved into his current role in Business Development in 2016. Martz holds a bachelor’s degree in civil engineering from Lehigh University and an MBA from Georgia Tech. He serves on the Environmental Research and Education Foundation Research Council and the Leadership Advisory Board of the Coalition for Renewable Natural Gas, and coaches his sons in basketball and flag football.