Enabling a flexible future for ERCOT

Creating the largest merchant battery system in the world

Wärtsilä delivered two major interconnected energy storage systems in South Texas totalling 200 MW.

Called “Madero and Ignacio,” the combined facilities add much needed year-round reliable operational ramping capacity to Texas’ grid. They can react instantaneously to sustain electricity output and keep the lights on when power generation fails or cannot respond quickly enough to rapidly changing conditions.