Meet the Team
Biogas Industry Experts
Our core values drive everything we do.
Our commitment to safety, quality, and the pursuit of excellence is unwavering.
Benny Benson is co-founder and president of ESI. An industry pioneer, Benny has been delivering industry-leading renewable energy solutions to the biofuels market for over 25 years.
Mark Cahill brings over 35 years of diverse business experience in management, finance, operations, sales, and marketing to his role— including experience in the Aviation, Aerospace and Defense, High Tech, and traditional manufacturing industries.
Director of Business Development
Mike has decades of experience shaping deals to provide engineering and construction services to a variety of stakeholders in the renewable energy and power generation industries.
Director of RNG Operations
As Director of RNG Operations, Wayne Gustin supports ESI's RNG o&m customers nationwide. With over 20 years of experience managing, operating, and constructing RNG and LFGTE projects across the U.S., Wayne's experience spans every aspect of RNG facility operations—and optimization.
Director of O&M
Keegan Mullinnix oversees all aspects of ESI's biogas plant maintenance, repair, and operations (MRO) business, including reliability and performance monitoring and analysis; preventative maintenance and repair; and more.
Director of Project Delivery
Jim has over thirty years of experience spanning all aspects of heavy industrial engineering and construction, with an extensive background in all aspects of project delivery.
Director of HR
Amanda's background in recruiting, policy development, performance management and employee engagement make her an outstanding resource for our growing organization.
Environmental Engineering Lead
Alan Herin leads ESI's environmental compliance team and oversees all aspects of compliance, reporting, and other environmental scope for clients nationwide and abroad.
Director of Finance
Candace is a meticulous accounting manager who brings over 20 years of superior performance, accurate reporting, and budget management expertise to her role—handling finances and related operations - including business operations, management, budgets, payroll, and more.
Environmental, Health & Safety Manager
Elysia has been instrumental in leading the ESI to outstanding annual safety and incident records. Since joining ESI, Elysia has managed and overseen the safety programs and procedures for 15+ gas-to-energy facilities while also overseeing all safety programs within the ESI home office and maintenance shops.