March 12, 2026
National Grid's South Commack Upgrade Project nears its final phase in Spring 2027, boosting energy reliability for Commack residents. Work on New Highway promises safer power without service interruptions.
With Long Island facing winter storms like the recent high winds battering Suffolk County, National Grid's **South Commack Upgrade Project** is set to deliver stronger energy reliability just in time. The project at the facility on **New Highway**, east of **Commack Road** between **Commack Road** and **Harned Road** in Commack, NY, moves into its **final phase in Spring 2027**, promising improved service for local homes and businesses like those along nearby **Viterbo Avenue**.
Phase 1 kicked off February 18, 2025, with excavations using vacuum trucks and heavy equipment, wrapping up by Fall 2025. No work is planned for 2026. Phase 2 starts Spring 2027 and ends Fall 2027, marking the final push to upgrade infrastructure within the fenced National Grid station. All phases run Monday-Friday, 8:30 a.m. to 4:30 p.m., though extended hours may apply due to outdoor complexities.
This upgrade reinforces the local energy system for safer, more reliable power, especially in heating season. No service interruptions or street work will affect residents near **Commack Road** shops or **New Highway** traffic. National Grid stresses safety: stay out of work zones and watch for signs. Noise from excavators and cranes may occur during digs. Meanwhile, Commack schools are also navigating their own long-term planning challenges, reflecting how the community continues to invest in its future on multiple fronts.
Reach the project team at 631-213-2009 or Box.LIprojects@nationalgrid.com. Check ngrid.com/southcommack for maps, updates, and timelines. Commack families can count on this boost to handle peak demands without worry.
Stay ahead of Long Island developments—explore more on LI Daily's Development Projects for updates on construction shaping our towns, including the recent retail expansion bringing Sephora to full occupancy at Mayfair Shopping Center in Commack and ongoing Suffolk County bridge upgrades delivering a $7.3M safety boost across the region.
