But traditionally when people talk about 'baseload' gas they mean CCGTs and 'peaking' gas they mean OCGTs. It's not about ability to throttle but capital cost v

But traditionally when people talk about 'baseload' gas they mean CCGTs and 'peaking' gas they mean OCGTs. It's not about ability to throttle but capital cost vs efficiency. The good reason not to build an OCGT if you're going to use it for baseload generation is that it's quite a bit less efficient than a CCGT. And the good reason not to build a CCGT for peaking use is that you probably won't recover the additional capital cost (because efficiency for a CCGT won't exceed an OCGT for several hours after startup).