> I see you've "rebutted" the DOE price survey by pointing to a blogger as your source.
Yes, I quoted me. A professional in the PV field.
The DOE report in question is based on numbers that are approximately five years old. That's how long it takes them to put reports together. In the last five years, the price of PV has fallen seven times. When you divide by seven, you get my number.
But what's really telling is that the post in question shows you how to do this calculation yourself using up-to-date numbers. But clearly you didn't bother to use the two minutes it takes. Are you really that lazy, or just don't want to admit you might be wrong?
> You don't need any energy storage as long as your base power can supply all your needs. Period
Incorrect, trivially so. If your base load power cannot throttle, when you can't use it all you need to dump it. There are a limited number of places you can do this, and when they run out you have to shut down the plants.
Nuclear is a good example. Most reactors can throttle about 15 to 25% within a 24 hour period, and somewhat less than that on a day-to-day basis. Yet daily power use varies at least 50% practically everywhere. So if you had a 100% nuclear base load supply, you'd have to find somewhere to dump about 30% of it every day.
And that really is like dumping 30% of your money into the turbines, which is precisely why fission represents a fairly small percentage of most supplies, including here in Ontario which has one of the highest penetrations at a little over 50%. If we go any higher, we have to start dumping power. France has pushed this to 75% through a fascinating system of rotating fuelling, but even then they've had to shut down parts of the network during heat waves.
Natural gas is a wonderful dispatchable source, as is hydro and to somewhat less extent, coal. A grid consisting of as much PV, wind and hydro you can make, with NG filling the rest, appears to be the future in North America at least. Such a system is sustainable, low cost, and much lower carbon than the one we had five years ago. And it's not just "nice to have", it's the fact on the ground: coal and nuclear plants are being turned off as I write this, while NG, PV and wind compete for title of "fastest installed".