Year 2015
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Cape Light Compact
Eversource
National Grid
Unitil
Berkshire
EGMA
Liberty
Columbia
National Grid Electric
NSTAR Electric
Unitil Electric
WMECo
Berkshire Gas
Blackstone Gas
Columbia Gas
Liberty Utilities
National Grid Gas
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NSTAR
WMECO
Bay State Gas
The Berkshire Gas Company
NGRID – GAS
BlackStone Gas
New England Gas
New England Gas Company
Blackstone
Bay State
WEMCO