Are you referring to California? IIRC the prices are driven by several factors, including expensive payouts for wildfire damage, but there isn't anything suggesting that renewables is a major factor. And rolling blackouts haven't been a thing since 2020. That might have been arguably related to renewables since they were experiencing abnormally hot climate change related heat waves that were extending into the evening hours and driving high air conditioning load beyond the time solar was prepared to handle it. I believe that in the meantime they've installed quite a number of batteries, which is why it is not a problem now.

Although "Getting rid of cheaper electricity generation would make the electricity cheaper" is genuinely an actual right wing talking point in the UK it doesn't make any sense. The reason it's a talking point is that they're funded by billionaires who'd reap the rewards from new fossil fuel licensing. They know they can't deliver, but what they learned from Brexit is that their supporters aren't too smart and simple messages, even if nonsensical, resonate well with those voters. "Drill baby drill" is simple. Wrong, but simple.

Right now in a dark and not very windy UK w/ 10GW of gas burners running the spot price for electricity here is almost £150 per MWh, but at 10am it was sunny with a brisk wind and sure enough that spot price was about £25 per MWh. Gee, I wonder whether the wind and sun are cheaper...