Gorge Area Reinforcement Project
In 2008, VELCO and Green Mountain Power (GMP) proposed to construct two new substations, and reconstruct and reconductor existing power lines to maintain reliability in northern Chittenden County .
The Gorge Area Reinforcement (GAR) Project is the second phase of a three-phase series of reliability reinforcements to the transmission and sub-transmission network in the greater Burlington area.
Needs & Benefits
The Gorge Area Reinforcement project provides a 115 kV source to the greater Burlington area. Failure of key transmission components cause low-voltage conditions, voltage instability/collapse, or thermal overloads, which could result in extended outages for the areas served by the transmission system.
Transmission utilities such as VELCO, are required to design, operate and maintain a transmission network according to national and regional reliability standards. Planning studies by VELCO and ISO-New England, New England’s bulk electric system provider, revealed that there are planning criteria violations with the system load projected to historical load growth rates.
- New South Burlington-Gorge VELCO substation(115 kV aluminum bus structure
- 4 breaker ring bus
- 2 transformers
- 2 breakers
- Control building
- New South Burlington-Gorge GMP substation (34.5 kV aluminum bus structure)
- Colchester-Gorge GMP substation expansion
- 34.5 kV ring bus
- 12 kV structures
- 1 transformer
- Line reconstruction
- 700 ft of 34.5 kV line reconstructed between new South Burlington-VELCO Gorge substation and existing Colchester-GMP Gorge substation
- 2.3 miles of 34.5 kV line reconductored between existing GMP Gorge substation and the McNeil Generation Station
VELCO’s aesthetic consultant reviewed the preliminary design plans and performed a visual analysis of the areas of the proposed Project. The findings indicated that the Project had the most potential visibility to the general public from areas between the GMP Gorge substation and the McNeil substation. A full analysis of potential aesthetic impacts and proposed landscaping mitigation measures was included with the project petition.
- Spring 2008
- Public meetings
- Summer 2008
- Regulatory & permitting process
- Fall 2009
- Construction start