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Project: T162700 #0428
 

Volume I: Niagara River Ice Study

Ice in the Niagara River reduces New York Power Authority’s (NYPA) and Ontario Power Generation’s (OPG) hydro generation at the Robert Moses and Sir Adam Beck power plants during most years. Continuous efforts have been made to safely control/manage the ice and reduce its impact on power generation. While ice control measures have reduced the hydropower losses, there may be opportunities for improvement.

The objective of this report is to review the ice management practices on the Niagara River to determine whether improvements to these practices are possible and if gains of generation can be achieved as a result.

Even though weather conditions play a major role in the control of ice on the Niagara River, NYPA and OPG play a significant role. These Power Entities manage the operation of the International Control Dam, the diversions of water from the river specifically for power production, the installation, removal and in-situ repair of the ice boom at the outlet of Lake Erie, and the deployment of the icebreakers.

The report addresses these issues by presenting an analysis of the main factors affecting energy losses. Additionally, this report provides a series of recommendations for possible improvements to the methods of ice control on the Niagara River falling under the control of the Power Entities. Any such alterations would be subject to FERC and IJC approval.

Volume II: St. Lawrence River Ice Study

Ice in the St. Lawrence River reduces New York Power Authority’s (NYPA) and Ontario Power Generation’s (OPG) hydro generation at the Moses-Saunders dam each year. Continuous efforts have been made to control/manage the ice and reduce its impact on power generation. While ice control measures have reduced the hydropower losses, there may be opportunities for improvement.

The objective of this report is to review the ice management practices at the St. Lawrence hydro power project to determine whether improvements to these practices are possible and if gains of generation can be achieved as a result. Even though weather conditions play a major role in the control of ice on the St. Lawrence hydro power project, the power entities still play a significant role by managing the ice boom system and by operating the Iroquois Dam in the best possible way.

The report addresses these issues by presenting an analysis of the past 20 years of ice management to identify the main factors having an impact on head losses and on energy losses, and by providing a series of recommendations for possible improvements to portions of the ice control on the St. Lawrence River which fall under the control of NYPA and OPG. Any such alterations would be subject to FERC and IJC approval.

Keywords:

River ice control, Ice hydraulics, Head losses, Ice booms, Energy losses