From Boston Logan International Airport: Exiting Logan Airport, follow the signs to Route I-93 North and the Sumner Tunnel. After exiting the tunnel stay in the left lane to take the ramp to northbound I-93.

Heading North on I-93: Follow I-93 North to I-495 South, exit 44B. Follow I-495 South 7.5 miles toward Lowell to exit 35 C-B-A. Take Route 3 North toward Nashua NH. Follow Route 3 North 5.8 miles to exit 34 Westford Road/Tyngsboro. Turn right at stop sign at end of ramp. Follow Westford Road 1.2 miles to set of lights; the Merrimack River will be directly in front of you. Turn right onto Middlesex Road. Beacon Power is 1.1 miles down on the left.

Heading South on I-93: Follow I-93 South to I-495 South, exit 44B. Follow I-495 South 7.5 miles toward Lowell to exit 35 C-B-A. Take Route 3 North toward Nashua NH. Follow Route 3 North 5.8 miles to exit 34 Westford Road/Tyngsboro. Turn right at stop sign at end of ramp. Follow Westford Road 1.2 miles to set of lights; the Merrimack River will be directly in front of you. Turn right onto Middlesex Road. Beacon Power is 1.1 miles down on the left.

Heading North on I-95/Route128: If starting out south of Route 3 (Burlington), follow I-95/Route 128 North to Route 3 North to exit 34 Westford Road/Tyngsboro. Turn right at stop sign at end of ramp. Follow Westford Road 1.2 miles to set of lights; the Merrimack River will be directly in front of you. Turn right onto Middlesex Road. Beacon Power is 1.1 miles down on the left.

If starting out north of Route 3 (Burlington), follow I-95/Route 128 North to I-93 North, exit 37B. Follow I-93 North to I-495 South, exit 44B. Follow I-495 South 7.5 miles toward Lowell to exit 35 C-B-A. Take Route 3 North toward Nashua NH. Follow Route 3 North 5.8 miles to exit 34 Westford Road/Tyngsboro. Turn right at stop sign at end of ramp. Follow Westford Road 1.2 miles to set of lights; the Merrimack River will be directly in front of you. Turn right onto Middlesex Road. Beacon Power is 1.1 miles down on the left.

Heading South on I-95/Route128: Follow I-95/Route 128 South to I-93 North. Follow I-93 North to I-495 South, exit 44B. Follow I-495 South 7.5 miles toward Lowell to exit 35 C-B-A. Take Route 3 North toward Nashua NH. Follow Route 3 North 5.8 miles to exit 34 Westford Road/Tyngsboro. Turn right at stop sign at end of ramp. Follow Westford Road 1.2 miles to set of lights; the Merrimack River will be directly in front of you. Turn right onto Middlesex Road. Beacon Power is 1.1 miles down on the left.