Utility-scale solar developers and engineering, procurement, and construction (EPC) contractors are turning to factory-built electrical balance of system (EBOS) solutions to mitigate mounting field labor costs and construction delays. Speaking at pv magazine USA Week 2026, Voltage Energy global director of engineering Jenny Levin detailed how factory-to-field assembly transforms high-risk field wiring into a standardized, plug-and-play installation model.
While solar photovoltaic modules represent the single largest equipment line item on a project site, overall installation labor accounts for up to 15% to 20% of total capital expenditure. Traditional DC field wiring requires running dedicated string lines back to combiner boxes, stripping insulation on site, and performing thousands of manual connector crimps in open field environments. On a modern utility site, these manual terminations multiply to tens or hundreds of thousands of individual connections, creating high exposure to connector mismatch, improper polarity, mechanical wire abrasion, and water intrusion.
To solve these compounding field risks, Voltage Energy utilizes custom factory-engineered harnesses and trunk bus arc...