In this kind of discussion I think most of us would assume that "instability" means a threat to continuity of supply. High prices are hardly evidence of that.

In this kind of discussion I think most of us would assume that "instability" means a threat to continuity of supply. High prices are hardly evidence of that. I understand that balancing supply from numerous turbines is difficult, but is that a solved problem? Is there evidence of customer supply problems or not?