EC3(13) Winter Availability Factor
Percentage
F2004 | F2005 | F2006 | F2007 | F2008 | |
| Winter period: November 15 and February 15 | |||||
| Target | N/A | N/A | N/A | 95.75 | 96.20 |
| Actual | 94.81 | 95.08 | 96.77 | 96.24 | |
Winter Availability is a percentage rate of the hydroelectric units in the system available to generate electricity (hours available for service/total hours) during the critical peaking period of November 15 to February 15. This measure excludes generation facilities of 12 megawatts and below.
Fiscal 2007 Winter Availability at 96.24 per cent was slightly higher than target of 95.75 per cent despite several major forced outages and adverse weather the system experienced this winter. This was achieved by managing discretionary outages carefully. From the previous year, fiscal 2007 results were slightly lower than fiscal 2006 due to a series of major forced outages the system experienced this past winter (GM Shrum G6 exciter related failures, Seven Mile G1 exciter related failure, and Ruskin G3 penstock leakage). In spite of these outages, this was still the second best result in the past four years because of carefully managing discretionary outages within the critical winter period.
Last Modified: Jul 11, 2007
