South Street Storage

Increasing grid reliability with energy storage

South Street Storage is a Battery Energy Storage System (BESS) located next to the South Street Solar array in Middlebury, VT. It has a power capacity of 2MW and an energy capacity of 8MWh. It will provide energy management services to Green Mountain Power (GMP) which will reduce GMP’s exposure to peak demand events within the ISO-NE system over the lifespan of the project. The batteries and energy storage technology used for this project were provided by Kore Power.

Proximity to the existing solar array maximizes the value of the battery and the solar array. This strategic co-location increases the ability to charge the battery with excess energy that might be lost in the middle of the day, when electricity demand is lower and the sun is brightest. The battery can store this extra energy and utilize it at a time when electricity demand is higher and thus more valuable. This type of “load shifting” also maximizes the value of the solar array by minimizing potential production curtailment.