DDH Energy Consulting Concord, NH
Energy Efficiency Investments Merrimack, NH
Energy LB Resources Nashua, NH
GDS Associates Manchester, NH
Innovative Natural Resources Solutions Concord, Antrim, NH
NLS Group Concord, NH
Nobis Engineering Concord, NH 
Normandeau Associates Portsmouth, NH
Reno Energy Consulting Derry, NH
Standard Power of America Nashua, NH
SGC Engineering
TRC Solutions Portsmouth, Manchester, NH
VHB Bedford, NH
Waldron Engineering & Construction Exeter, NH