Sustainable Infrastructure Solutions

Frederick-Winchester Service Authority - Anaerobic Digesters

An Innovative Approach to Wastewater Treatment and Water Resource Recovery Solutions


ESG's team of experts and its innovative project delivery solutions help utilities and municipalities facing the challenge of wastewater treatment plant asset renewal achieve their objectives within existing financial constraints. What differentiates ESG is how we take the time to fully understand the goals our customers are trying to achieve, with a focus on developing solutions that minimize costs, streamline schedules, and achieve efficiencies.

ESG’s streamlined, goals-oriented project development process drives a focus on systems and solutions that make sense, rather than spending time reviewing the universe of technical options. In many cases, the customer’s staff has already had discussions concerning many of the suitable technologies, and staff time can now be more effectively used for identifying issues, goals and for decision-making. 

Frederick-Winchester Service Authority - Opequon Water Reclamation Facility Piney Creek Wastewater Treatment Plant - Anaerobic Digester
Opequon Water Reclamation Facility - Receiving Station Town of Niskayuna Wastewater Treatment Plant

ESG also uses a combined financial-technical model that allows our customers to see the impact of various technical solutions on the treatment goals, debt service, annual cash flow (operations and income), and the introduction of potential waste streams. The ability to combine real-time financial evaluations, both Cap-ex and Op-ex, with technical models showing changes in biosolids production, gas production and recycle streams, allows for an efficient evaluation of alternatives and configurations to meet project goals and metrics.

ESG also provides its customers a revenue guarantee to ensure that projects are financially viable, which minimizes risk for customers. For organics acquisition, ESG provides contracts ensuring that organics will be at the facility in the quantity and at the quality and cost that the customer specifies.   

Our Industry Organizations


Beckley Sanitary Board - Piney Creek Wastewater Treatment Plant

Beckley Sanitary Board

Beckley, West Virginia
Town of Niskayuna Wastewater Treatment Plant - During Construction

Town of Niskayuna, New York

Niskayuna, New York
City of Montpelier - Water Resource Recovery Facility

City of Montpelier

Montpelier, Vermont

Frederick-Winchester Service Authority, Virginia

The Frederick Winchester Service Authority’s (FWSA) $47 million energy performance contract with Energy Systems Group (ESG) included the design and construction of comprehensive energy efficiency and infrastructure improvements at its Opequon Water Reclamation Facility. The 12.6 million gallon per day enhanced nutrient removal facility has very strict nitrogen and phosphorus removal requirements necessary to help preserve the well-being of the Chesapeake Bay. The project created a new revenue stream for FWSA through high strength waste acceptance that has helped to stabilize rates for customers, and it has promoted economic development in the City of Winchester and Frederick County area.


Town of Niskayuna, New York

The Town of Niskayuna, New York partnered with Energy Systems Group (ESG), a leading energy services provider, to serve as the prime contractor of a multiyear project that included improvements to its 3 million gallons per day (MGD) wastewater treatment plant. In addition to meeting New York State Department of Environmental Conservation (NYSDEC) wet weather management obligations, the plant improvements will expand the plant’s treatment capacity to 3.5 MGD, positioning Niskayuna for future economic growth.



Stay up-to-date with the latest ESG Sustainable Infrastructure Solutions News, Articles, and Interviews at

©2023 All rights reserved. Energy Systems Group, LLC

Contact Us

9877 Eastgate Court
Newburgh, Indiana 47630