Photovoltaic System Nears Completion

ESB’S Utility/Industrial Division is nearing completion on Pittsfield MA Ground
Mounted Photovoltaic Power System. The station is a 1.8MW solar electric power system
being constructed by E.S. Boulos (ESB), engineered by American Capital Energy (ACE),
and owned by Western Mass Electric Company (WMECo).

The Pittsfield PV Power System is comprised of 6,534 Suntech 280W solar modules.
This is one of the first PV systems in the northeast of this magnitude to be ground
mounted on a concrete ballast system. The Pittsfield PV Power System will connect into
three (3) Advanced Energy Solaron 500W Inverters. These inverters will then feed into a
new step-up transformer before being outputted onto a medium voltage utility power line.

Anticipated in service date is scheduled for December 2010.