Industry Press Releases

Constellation contracts ABB to supply seven ENVILINE(TM) ESS to the SEPTA network

Friday, Jan 29, 2016

ABB, the leading power and automation technology group, has recently been awarded a contract by Constellation, a subsidiary of Exelon Corporation, to engineer, manufacture and commission seven ENVILINETM Energy Storage Systems (ESS) with Lithium-ion battery storage from Saft America. The ESS will provide 8.75-megawatts of frequency regulation support on the PJM electric grid and recover train braking energy on the Southeastern Pennsylvania Transportation Authority (SEPTA) train network. This contract brings ABB's installed base of commercially operating ENVILINE ESS train braking energy recovery systems to 15MW, the largest of any supplier.

"Transit authorities across North America are faced with increased energy costs and pressure to achieve sustainability objectives. ABB's ENVILINETM ESS for DC rail transportation is an effective and economical solution that addresses these issues." explains Derek Monk, General Manager, DMPC, ABB in Canada. "ABB has a long and successful presence in DC traction power and is proud to be a leader in the transformation and modernization of train networks such as that of SEPTA."

The project, which is among the first commercially deployed battery storage systems in a transit operation, requires no upfront capital investment from SEPTA and will be financed through a 20-year battery services agreement with Constellation.

"Constellation is pleased to work with ABB to bring this innovative, battery storage network online for our customer," said Gary Fromer, senior vice president of distributed energy at Constellation. "As a competitive energy supplier, we aim to provide our customers with the best long-term economic and business solutions for how their energy is produced and supplied." The design and manufacturing of the Energy Storage Systems will take place in North America and the units are scheduled for delivery before the end of 2016.


Whenever a train brakes, energy is returned to the traction line, but with an ENVILINETM Energy Storage System (ESS), this energy can be saved and re-used for acceleration. ESS is a wayside energy management system that stores and returns the braking energy, which lowers energy costs, reduces peak power demand and penalties, stabilizes the voltage for better acceleration, and provides emergency traction power.

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Link to ABB ENVILINE webpage:

About ABB

ABB ( is a leader in power and automation technologies that enable utility, industry, and transport and infrastructure customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in roughly 100 countries and employs about 140,000 people.

About Constellation

Constellation is a leading competitive retail supplier of power, natural gas and energy products and services for homes and businesses across the continental United States. Constellation's family of retail businesses serves approximately 2 million residential, public sector and business customers, including more than two-thirds of the Fortune 100. Baltimore-based Constellation is a subsidiary of Exelon Corporation (NYSE: EXC), the nation's leading competitive energy provider, with 2014 revenues of approximately $27.4 billion, and more than 32,000 megawatts of owned capacity comprising one of the nation's cleanest and lowest-cost power generation fleets. Learn more at or on Twitter at @ConstellationEG.