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McDonough Electric solar interconnect New Hampshire
Division · Renewable Energy

The interconnect is where
solar meets the grid.

McDonough Electric builds the infrastructure that connects renewable energy to the grid — 34.5kV solar interconnects, BESS integration, MV collection systems, and fiber backbone for utility-scale and community solar projects across New England.

34.5kV
Solar interconnect voltage class
ISO-NE
Queue experience NH and ME
BESS
Battery energy storage infrastructure
MV
Collection system construction
NH+ME
Northern NE renewable focus
The utility contractor renewable developers actually need.
Not just a line crew.

Solar developers and EPCs need a contractor who understands the utility interconnection process, medium-voltage construction standards, and the field engineering judgment to solve problems that arise between design and construction.

McDonough Electric brings all of it. Our northern NH operations are positioned directly in the active ISO-NE interconnection queue for solar and storage projects in New Hampshire and Maine.

Case Study · 34.5kV Solar Interconnect

Gilford, NH Solar Interconnect

Eversource NH · 34.5kV · Construction Complete · 2025-2026

The original engineering specification called for a horizontal switch configuration. When equipment was delivered, it arrived as a vertical switch — a deviation that would have caused schedule-killing delays for most contractors.

Ryan McDonough developed a field engineering solution on-site: reroute the switch to a dedicated riser pole, relocate the recloser to an adjacent pole, and reconfigure the framing to accommodate the vertical equipment — all within Eversource NH interconnect specifications.

Eversource approved the solution. Zero schedule impact.

Client
Eversource NH
Voltage Class
34.5kV
Location
Gilford, NH
Status
Commissioning Phase
Field Engineering
Ryan McDonough
Impact
Zero schedule deviation
Gilford NH solar interconnect 1
Gilford NH solar interconnect 2
Gilford NH solar interconnect 3
BESS Infrastructure
Battery Energy Storage. Built to Utility Standards.
BESS infrastructure 1
BESS Enclosures + Solar Array
BESS infrastructure 2
Interconnect Hardware Detail
BESS infrastructure 3
Recloser + Interconnect + Solar
Scope of Work
Renewable Energy Services
34.5kV Solar Interconnects
  • Interconnect switch installation
  • Recloser and protection equipment
  • Overhead conductor and framing
  • Riser pole construction
  • Cutout and arrester installation
  • Field engineering support
BESS Infrastructure
  • GOAB switch installation
  • Recloser installation
  • Overhead conductor
  • Framing and hardware
  • Utility-grade specifications
  • Testing coordination
MV Collection Systems
  • Underground MV cable
  • Overhead MV collection
  • Combiner and collection points
  • Pad-mount equipment
  • Underground duct bank
  • Utility interconnection
Utility Coordination
  • Eversource NH experience
  • CMP service territory
  • ISO-NE queue knowledge
  • Spec deviation resolution
  • Utility approval management
  • Construction to commissioning
SCADA Fiber Integration
  • SCADA communications fiber
  • Control building fiber
  • Splice and termination
  • Fiber to substation
  • Integrated MV and fiber scope
  • Single contractor delivery
Field Engineering
  • On-site spec problem solving
  • Utility-compliant solutions
  • Equipment substitution management
  • No schedule impact approach
  • Coordination with EPC
  • Documentation for utility approval
Renewable energy project
in the ISO-NE queue?
Northern NH and ME operations. 34.5kV interconnect experience. Talk to Ryan directly.
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