Additional info on Ontario's wind:

http://www.ieso.ca/imoweb/pubs/marketReports/ORO_Report-2007-2-2.pdf

Wind
Approximately 475 MW of wind-powered generation is currently installed at five locations around the province, with several more projects to be completed within the next couple of years. By the end of 2009, approximately 630 MW of
new wind power facilities will be connected to the IESO-controlled grid while an additional 460 MW of embedded wind power generation is scheduled to come in service through the OPA’s Renewable Energy Standard Offer Program.
Wind power has demonstrated a positive contribution to overall energy supply, despite its intermittent operation. In fact, the annual wind contribution increased from 410 gigawatt hours (GWh) in 2006 to more than 920 GWh in
the first 11 months of 2007. The annual energy capacity factor for these wind farms for the period March 2006 through October 2007 averaged 27 per cent, with monthly average capacity factors reaching a monthly low of 14 per cent and a high of 43 per cent.

The intermittent nature of wind power will continue to pose challenges to the reliability of the system. The IESO is proactively engaged in addressing wind-power related operational and forecasting challenges through enhanced
stakeholdering activities. Since the last publication of the ORO, the IESO’s Wind Integration Standing Committee has developed recommendations and implemented decisions on priority operational and forecasting issues. Additionally,
it is exploring a new wind forecasting method and associated capacity contribution for use in resource adequacy models that support future Outlooks.

Adding in the total Name Plate Capacity of 475 Mw into my chart:

MW % Contribution % of name plate
Feb-28 42 0.19% 8.8%
Feb-29 325 1.53% 68.4%
Mar-01 158 0.94% 33.3%
Mar-02 330 1.95% 69.5%
Mar-03 338 1.95% 71.2%
Mar-04 78 0.37% 16.4%

The complete daily output from wind can be found here
http://www.ieso.ca/imoweb/pubs/marketReports/download/HourlyWindGen_2008...

I compiled the data from
http://www.ieso.ca/imoweb/pubs/marketReports/download/HourlyWindGen_2008...
To get the number of hits per hour for each percent of name plate for all the wind output from 1-Mar-06 to 26-feb-08, 17,473 measurements.

I get this graph

This shows clearly where the ouput from windturbines spends its time as a percent of the Name Plate. 30% of the hourly hits is above the 27% capacity factor. 70% of the time the hourly output is below 27%. 50% of the time the output is at 13% of Name Plate or less. 5% of the time there is no output at all. 90% of the hits are at or below 50% Name Plate.