Winooski 1-high res

The Project facility is located at lower Winooski Falls on the Winooski River ten miles upstream of its confluence with Lake Champlain, between the city of Winooski, on the north bank, and the city of Burlington, on the south bank. This run-of-river facility has a refurbished spillway with crest gates abutting a historic timber crib dam that dates from 1876.  The dam is on the National Register of Historic Places as part of the Winooski Falls Mill District. There are two plant species listed by the state as threatened and endangered in the vicinity of the project that were the subject of mitigation and protection activities at the time of the facility’s construction. The applicant also constructed fish passage facilities and a riverside park and trail as part of the project.

Project Name Winooski One
LIHI Certificate Number 16
LIHI Effective and
Expiration Dates
July 29, 2014
July 29, 2019
Owner Burlington Electric
State Vermont
Location Located at the lower Winooski Falls on the Winooski River, ten miles upstream of its confluence with Lake Champlain.
Installed Capacity 7,400 KW
Average Annual Generation 30,000 MWh
Facility Type Run-of-river
FERC No. 2756

The Project, constructed in 1991-93, consists of a 200-foot-long, 35-foot-high concrete dam situated immediately downstream and abutting the timber-crib dam surmounted by a 100-foot-long, eight-foot-high bascule gate with crest elevation of 136 feet NGVD; a 36-foot-long bascule gate located at the right abutment; a 5.7 acre reservoir; a 70-foot-long intake powerhouse containing one 6.5 MW turbine generator; a 45-foot-wide, 125-foot-long tailrace; a fish trap facility; a riverside park; an underground transmission cable; and an access road.  Project owner Winooski One Partners leases the site and water rights from the City of Burlington. The City of Burlington has the option to buy the facility in the 20th year of the license; the license is held jointly by Winooski One Partners and the city.

Certification Benefits

The clean energy benefits of the Winooski One facility are the generation of more than 30 million kWh of electricity per year.  Based on current U.S. EPA data for typical household electricity demand, that annual generation is enough to supply electricity to more than 2,600 homes. In addition to these energy benefits, the Winooski One facility provides important ecological and recreational benefits to the Winooski River by maintaining natural flow variability below its dam that protects fish habitat in the facility’s bypassed reach, by operating a fish lift to enable upstream fish passage for lake trout, salmon and steelhead, and by constructing a riverside park that provides access to the river.

Certification History

August 27, 2014: The LIHI Governing Board has determined that the Winooski One Project continues to meet the LIHI Certification Criteria, with an effective certification date of July 29, 2014. It is a five year term that will expire on July 29, 2019.

April 17, 2014: The Low Impact Hydropower Institute has received an application for recertification of the Winooski One Project. The current term is scheduled to expire on July 29, 2014. The 2014 application can be found in the “Files” section below.

November 19, 2009: LIHI’s Governing Board has determined that the Winooski One Hydroelectric Project continues to meet the Certification Criteria, and has been recertified for a five year term, effective July 29, 2009 and expiring July 29, 2014.

June 1, 2009: The Winooski One Partnership has filed an application to re-certify the Winooski One Hydroelectric Project, located in the cities of Burlington and Winooski in Chittenden County, Vermont. The original certification is set to expire July 29, 2009.

October 21, 2004: The Winooski One Project has been certified as low impact for a five year term, effective July 29, 2004 and expiring July 29, 2009.


Files: