BURLINGTON ELECTRIC DEPARTMENT’S WRITTEN ASSESSMENT
OF THE RISKS AND BENEFITS OF THE PROPOSED EAST AVENUE LOOP PROJECT
Project Summary
On May 29, 2008, the Vermont
Public Service Board (“PSB”) issued to Vermont Electric Power Company, Inc. and Vermont Transco,
LLC (“VELCO”), the City of Burlington Electric Light Department (“BED”)
and Green Mountain Power Corporation (“Green Mountain Power”) (collectively,
the “Petitioners”) a certificate of public good (“CPG”) for the
so-called East Avenue Loop Project (the “EAL Project” or “Project”), finding
that its construction will promote the general good of the State of
Vermont. The Project consists of the following
components:
1. Replacement of
the existing 4.8-mile 115 kV line in the 150 foot VELCO right-of-way between
VELCO’s Essex substation and its East Avenue substation with two new 115 kV
lines;
2. Expansion of the
existing East Avenue substation adjacent to Centennial Field to 110’ x 376.5’
to accommodate new equipment, including three transformers, four circuit
breakers, and a new control house;
3. Installation of a
new 1.5-mile 34.5 kV line from the East Avenue substation to the BED
substation at the McNeil Generating Station, with most of the new line to be
installed underground from Centennial Road to just west of Colchester Avenue,
and along the existing underground conduit on Riverside Avenue until Intervale
Road; and
4. Construction of a
new substation within the existing BED
McNeil substation, which will accommodate an existing transformer to be
relocated from BED’s Lake
Street
substation, a new 15 kV metal enclosed modular substation, and three circuit
breakers.
The Project will also allow the removal of several BED
13.8 kV circuits connected to BED’s Lake
Street
substation, including the overhead lines that span the Burlington
Waterfront Park.
Pursuant to
30 V.S.A. §248(c), BED is required to
provide Burlington voters with a written assessment of the risks and benefits
of the proposed EAL Project which were identified by the PSB
in the CPG, and any other risks and benefits that may be identified by BED. A complete copy of the PSB’s
Order and CPG is available for inspection and copying at the Office of the City
Clerk/Treasurer and Burlington Electric Department.
Need for the Project
As identified
by the PSB, “The
present electric sub-transmission and distribution network in the EAL Chittenden
County area cannot provide adequate and reliable electric service
to the customers served in that area. Under the present system configuration
and loads, significant amounts of Chittenden County’s electric load --
including critical facilities like Fletcher Allen Health Care, the University
of Vermont and its research facilities, the City of Burlington water and
wastewater processing facilities, and the City of Burlington downtown
commercial core -- may be lost under a number of single contingency scenarios,
including loss of the single East Avenue substation 115/34.5 kV transformer or
loss of the single 115 kV K-25 line that is the sole radial connection between
the East Avenue and Essex substations. The East Avenue Loop Project addresses these serious reliability problems (emphasis supplied).
The Project will provide a redundant delivery supply point to East Avenue so that power is not instantaneously lost for failure of
critical facilities, and will also provide necessary reinforcement to the
sub-transmission and distribution network in this area.”
Environmental Risks
As with
construction of any electric transmission project, there are environmental and
aesthetic risks associated with the EAL Project. As part of the PSB
proceedings the Petitioners entered into agreements with the Vermont Department
of Public Service, the Vermont Agency of Natural Resources, Winooski Valley
Park District and the City of South Burlington, and the Vermont Agency of Commerce and Community Development Division
of Historic Preservation, to address each of these party’s concerns with the
Project. VELCO also entered into an
agreement with the University of Vermont
to address its concerns. As a result of
these agreements, all parties supported the PSB’s
issuance of a CPG for the Project. In
addition, these agreements and the evidence submitted by Petitioners allowed
the Board to find that the Project “will not have an undue adverse effect on
aesthetics, historic sites and water purity, the natural environments and the
public health and safety.” The PSB
also concluded that “[t]he electric and magnetic fields (“EMF”) produced by the
Project will not have an undue adverse effect on the public health or safety.”
Section 248 Criteria
Before issuing a CPG, section 248 of Title 30 of the
Vermont Statutes requires the Board to find that construction of the EAL
Project meets nine (9) separate criteria.
In addition to the findings discussed above, the Board found as follows:
1. “The Project
will not interfere with the orderly development of the region, with due
consideration having been given to the recommendations of the municipal and
regional planning commissions, the recommendations of municipal legislative
bodies, and the land conservation measures contained in the plan of any
affected municipality.”
2. “The Project is required to meet the present
and future demand for services which could not otherwise be provided in a more
cost effective manner through energy conservation programs and measures and
energy efficiency and load management measures.”
3. “The Project will not adversely affect system
stability and reliability; in fact, the Project will enhance system stability
and reliability.”
4. “The Project will result in economic and
social benefits to the state of Vermont and its residents. . . . The Project
will improve the reliability of the electric transmission system serving all of
Chittenden County, including the City of Burlington, by removing critical loads
from single contingency exposure.”
5. “The Project will not have an undue adverse
effect on aesthetics, historic sites and water purity, the natural environment,
and the public health and safety.”
6. “The Project is
consistent with the principles for resource selection expressed in the
Integrated Resource Plan (“IRP”) of . . . BED.”
7. “The Project complies with the electric
energy plan approved by the Department [of Public Service] under 30 V.S.A. §
202.”
8. “No
element of the Project is located within the vicinity of the water bodies
designated by the Vermont Water Resources Board as Outstanding Resource Waters,
and therefore the Project will not have any effect on Outstanding Resource
Waters.”
9. “The proposed Project can be served
economically by existing or planned transmission facilities without undue
adverse effect on Vermont utilities or customers.”
Project Costs
The total cost of the EAL project is
estimated at $43,484,000 for all project elements. The VELCO portions of the Project are
considered “pool transmission facilities,” or PTF, and are eligible for
regional cost treatment. VELCO has
received approval from ISO New England, Inc., the operator of the bulk
transmission system in New England, for treatment of $25,141,670 of the
Project’s costs as PTF, meaning Vermont’s share of those costs will be
approximately $1.27 million. The total
costs of BED’s portion of the Project are estimated at $7.8
million. BED intends to pay its share of
the Project with proceeds from the revenue bonds Burlington voters overwhelmingly
approved in March 2008.
Burlington Benefits
In addition to the benefits outlined above, the Project
will allow BED to underground or relocate
its distribution lines on the waterfront, resulting in an aesthetic improvement
in this area. The EAL Project also puts
an underlying transmission system in place that will allow GMP
to remove its waterfront lines after construction of phase II, which is
projected to occur in year 2010. BED
also will relocate its distribution circuit from the Centennial Woods Natural
Area to University Road and will abandon this right of way, allowing this area
to return to a natural state. VELCO
intends to abandon its second 150 foot, unused power line easement at
Centennial Woods. Additionally, the
Project will allow BED to avoid paying
transmission charges to GMP for BED’s
share of McNeil power, which presently costs ratepayers approximately $340,000
per year.