NH SB439

Authorizes municipalities to permit data centers in commercial and industrial zoning districts, subject to local land use regulations

Prohibits data centers within 2,640 feet of passenger rail stations or high-capacity transit facilities

Requires applicants to obtain written confirmation from the electric utility that adequate electrical capacity will be available within 2 years of construction

Limits noise from data centers within 300 feet of residential districts to no more than 5 percent above ambient noise levels, requiring a noise study by a qualified acoustical engineer

Mandates specific design standards including 150-foot setbacks for mechanical equipment, 30-foot perimeter landscape buffers with canopy trees, architectural variations on building facades over 100 feet, and 6-foot sidewalks with landscaped strips along street frontages