Here's the latest:
Another large variation was in the frequency and energy volume of manual actions, such as nuclear unit maneuvers or import transaction curtailments, for surplus baseload generation conditions. In Q1 2012, there were 73 GWh of curtailments versus 32 GWh in Q1 of 2011. The rise in manual action is a result of lower minimum demands as well as a growing portfolio of baseload generation. The ability to dispatch renewable resources may help mitigate the need for these actions moving forward.
|The IESO 18 month outlook now graphs some curtailment actions|
As it does now - with those curtailments having risen 128% in the first quarter of 2012 over Q1 of 2011.