79:. Increased power demand necessitated a second generating station, SAB 2, to be constructed in 1954. SAB 2 derives its water supply from two diversion tunnels, each about 9 kilometres (5.6 mi) in length. In 1958, a reservoir and the SAB Pump Station were constructed in order to make better use of available water by storing it during periods of low demand and using it in periods of greater demand in order to maximize the efficiency of the stations in regards to electricity supply and demand.
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264:(OPG) and the Ontario Government officially placed the new Niagara tunnel into service with a formal opening ceremony and tour. The OPG reported that the project will be financially rewarding despite being completed four years later than planned and about $ 500M over its originally estimated cost. OPG's president and CEO Tom Mitchell stated: "This was a large, complex project that will serve Ontario for more than 100 years".
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The new 10.2 kilometres (6.3 mi) long tunnel is 12.7 metres (42 ft) in diameter, or about four storeys in height, and allows an additional diversion of a distant part of the
Niagara River to reach the SAB plant complex at a rate of about 500 cubic metres (18,000 cu ft) of water
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The tunnel project was completed at a total cost $ 100 million lower than its revised $ 1.6 billion budget, and with an in-service date of 9 March 2013. The operational start-of-service date was nine months sooner than the project's revised schedule that was drawn up in 2009 due to unexpected and
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to the SAB complex. The bored tunnel was subsequently lined with an impervious membrane and a concrete lining, pre-stressed by high pressure grouting. The massive undertaking created about 1.6 million cubic metres of rock and debris, and was designed for a minimum 90-year life span.
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per second, a flow rate that can fill an
Olympic-sized swimming pool in seconds. The Ontario Government considers the Niagara Tunnel Project and the Sir Adam Beck complex as integral to its efforts to close all of the province's coal-fired generating plants as part of its
157:, and was the world's largest hard-rock tunnel boring machine as of 2006. The TBM operated as deep as 140 metres (460 ft) below ground level to avoid the machine's vibrations being felt at surface level. The design-build contractor for the project was the
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Due to slower than projected boring progress caused by constant tunnel roof over-breaks, the project completion date was extended to at least
December 2013, with a revised total projected cost of $ 1.6 billion.
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The project's new 12.7 metres (42 ft) diameter, 10.2 kilometres (6.3 mi) long tunnel was officially placed into service on 21 March 2013, helping to increase the generating complex's
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First constructed in 1922, the initial Sir Adam Beck power generating station, now abbreviated as SAB 1, derived its water supply from a hydro canal connected to the
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117:, stated that "This project is a source of pride as an engineering feat and as a practical solution for meeting Ontario's energy needs through clean sources".
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The
Niagara Tunnel Project was selected by International Water Power & Dam Construction as the North American Project of the Year for 2013.
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The new tunnel will provide enough additional water to the Sir Adam Beck generating complex to produce power for approximately 160,000 homes.
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The HP 471-316 TBM was driven by 15 electric motors totaling about 4.7 megawatts of power (6,375 horsepower), built by the
Robbins Company of
86:(OPG), which owns and operates the SAB complex, completed a series of major upgrades at the SAB 2 plant, increasing its potential generating
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141:. The TBM machine bored a tunnel about 10.2 kilometres (6.3 mi) long and about 14.4 metres (47 feet) in diameter under the
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Water Now
Flowing Through Newly Completed Niagara Tunnel Project will generate 100 plus years of renewable electricity
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Boring by the Hatch Mott MacDonald
Engineering Company started on 15 September 2006 at the north end, located at
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The
Niagara Tunnel Project's intake point (near Upper Rapids Boulevard) under construction in 2010.
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Hatch Ltd, Owners
Engineering Team with Hatch Mott MacDonald for Ontario Power Generation
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Niagara Tunnel
Completion Important Piece for Ontario's Hydroelectric Power Supply
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Water delivered by the major new tunnel complements other upgrades to the
557:, Season 8, Episode 17, 15 March 2011. Retrieved from the CBC.ca website
406:, Ontario Power Generation website, March 2013. Retrieved 11 April 2013.
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Morrison Hershfield Lead Consulting Engineer for outside works
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North American Project of the Year – Niagara tunnel project
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difficult geological conditions encountered in the soft
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and ended on 31 March 2011 at the south end, located at
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387:, NiagaraFrontier.com website, updated November 2012.
137:(TBM), affectionately named "Big Becky" in honour of
514:International Water Power & Dam Construction –
109:Upon the project's formal opening the Honourable
50:Sir Adam Beck Hydroelectric Generating Stations
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417:Niagara Tunnel Now In-Service, 21 March 2013
404:21 March 2013: Niagara Tunnel Now In-Service
133:The Niagara Tunnel was constructed using a
52:, resulting in more efficient use of the
462:, OPG News Release, 21 March 2013 (PDF).
430:"NIAGARA TUNNEL PROJECT - Niagara Falls"
623:Energy infrastructure completed in 2013
603:Hydroelectric power stations in Ontario
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385:Niagara Tunnel Project Technical Facts
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262:Ontario Power Generation Corporation
443:Niagara Tunnel Project (2005-2013)
272:during the tunnel boring process.
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537:Ontario Power Generation website
532:Official Niagara Tunnel web page
351:Ontario Green Energy Act of 2009
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346:List of energy storage projects
618:2013 establishments in Ontario
552:Niagara Tunnel Project on the
445:, NiagaraFrontier.com website.
143:City of Niagara Falls, Ontario
104:clean and green energy program
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497:Big Becky's running late: OPG
256:Completion and commissioning
518:. Retrieved September 2013.
419:. Retrieved September 2013.
415:Ontario Power Generation –
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628:Tunnels completed in 2013
579:43.0696444°N 79.0593806°W
270:Queenston Shale Formation
228:43.0696444°N 79.0593806°W
129:Construction work in 2010
608:Ontario Power Generation
477:RenewableEnergyWorld.com
356:Ontario Power Generation
239:Niagara Tunnel south end
199:Niagara Tunnel north end
84:Ontario Power Generation
584:43.0696444; -79.0593806
326:Renewable energy portal
233:43.0696444; -79.0593806
188:43.140333°N 79.062278°W
82:Between 1996 and 2005,
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39:Niagara Falls, Ontario
37:generation complex in
28:Niagara Tunnel Project
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260:On 21 March 2013 the
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135:Tunnel Boring Machine
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613:Engineering projects
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554:Rick Mercer Report
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115:Minister of Energy
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495:Larocque, Corey.
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145:, from the
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597:Categories
367:References
341:Hydropower
237: (
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163:Strabag AG
71:Background
92:megawatts
65:megawatts
282:See also
159:Austrian
90:by 194
63:by 150
43:Canada
26:The
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