Comment Re:Octopus (Score 1) 144
> I'm talking about load shifting, you're talking about base load and frequency maintenance.
And I'm saying you cannot effectively do load shifting without storage. Renewables tend to peak mid-day, especially solar, and the ability to soak up that surplus energy is dependent on actually having loads that can be dispatched at that time. We're talking about domestic energy use which is not very flexible; Okay great you can do your laundry with cheap solar electricity at 10AM but that's not helpful if you're not home at 10AM. There's very little a typical homeowner can do here unless they've invested in additional equipment. Storage batteries and water heaters are the most obvious choices and are easily scheduled to take advantage of electricity rates. Taking a half day off work to do all your household chores is a bit less practical.
> If I can shift enough of the load away from 7pm, then I don't have to turn on a coal plant in anticipation of base load need at 7pm.
That's exactly not how coal power works, and that's actually the core problem. You can't turn a coal plant on and off on a whim; it can take north of a full day to get one of those things started. This means you can't afford to turn off a coal plant from 10AM to 3PM when renewables are peaking because you won't be able to turn it back on in time for the 4PM peak demand. The coal plant stays on, and now you have to soak up the surplus energy to avoid blowing up the grid. In case you missed it, this is *exactly* the reasoning discussed in the article.
This is not about saving you, the consumer, money. If electricity is expensive to buy then that cost gets passed on to you. The only economic factor at play is the cost of curtailing renewables - curtailment also costs money and those costs CANNOT be passed on to the consumer. Utilities want to avoid curtailment and would rather give electricity away for free than absorb those costs. This point is, again, in the article.
=Smidge=