The first 4 paragraphs I can agree with.
But the last paragraphs, don't worry, good news, solar+storage is now the cheapest form of electricity, even in "cold" climates (winter sun stronger closer to poles), but even the left has a hard time announcing it because they are so fixated on climate and felt for so long that "it shouldn't be about the money" when it was expensive and needed work to drop prices that now they can't wake up and see the numbers are in their FAVOR.
Wind is tied with coal and falling. Plus storage on site before it enters the grid, wind is even cheaper than coal. Coal is only going UP in price to meet tighter pollution controls.
Nuclear is "cheap" only at generation level, but could never survive without government self insurance and waste storage because the private market would never insure it. If PI would, it wouldn't be cost effective for insurance or waste storage nor could the storage be certified safe forever by a private company that can walk away.
Nuclear only happened because of cold war nuke defense research trickle down to private industry, so the whole thing is totally subsidized.
This paints fossil and nuke (and hydrogen) into a corner where it belongs, not because it's not "liberal" but because when you follow the money ALL the way upstream, they don't work.
Don't worry, there will be plenty of natural gas plants to feather in and out of renewable/storage baseload. Storage isn't just batteries which are dropping in price, there's mechanical storage, ice, etc. It's very interesting. And V2G/V2H is storage AND backup power.
Efficiency saves 75% of all energy that's currently wasted - the same as removing 75% of all power plants (or not building new ones). But it's going to take a long time and a lot of attrition to get there so no worries. PassiveHouse is THE building standard to go for, even in commercial buildings, not LEED, because it's easy. PH reduced 90% of HVAC cost for only 5% more construction costs.
Rocky Mountain Institute is neither liberal nor conservative. Maybe it's a little "libertarian" but basically focuses on TRUE costs of energy to reduce GHG and fee/bates to reward the good and punish the bad on a 1:1 ratio when possible.