Watson Generating Station

Mass. Electric Construction Co. (MEC) and a team of six contractors were given limited notice to proceed on the construction of the new 116MW Thomas A. Watson Generating Station in December 2007. MEC was the prime electrical subcontractor for the $10.2 Million Engineer-Procure-Construct (EPC) contract.

The project consisted of the installation of two new 50MW, gas turbine Rolls Royce Generators, connected to two new, 70MVA transformers (GSU’s), which feed the power grid at 115KV. The new station was built on two acres of land adjacent to the existing Potter II Power Plant, in Braintree, MA. The turbines and GSU’s were supplied by the owner, and were delivered to the job site in July 2008. 

MEC’s portion of the contract included the installation of: 

• 15KV switches
• Service Station Transformers 
• MV starters for gas compressors
• (4) 480V switchgear Motor Control Centers
• EEE structure to house the electrical equipment
• All conduit and wiring (extensively in ductbanks)
• Ancillary electrical equipment