Cost of energy vs cost of capacity.

Intermittent renewables (solar and wind) can produce extremely cheap energy. Meaning when it’s making energy, depending on the region, it can be dirt cheap.

But cost of capacity is what matters. Electricity needs to be produced and delivered in the instant it is consumed 24/7, 365. Cost of capacity therefore is the cost to produce that electricity in the instant it is demanded over the 8,760 hours in a year.

By their nature, intermittent renewables can’t do that, so other technologies are needed to supplement the supply.

Homeowners with solar isn’t the best way to test the accuracy of the articles claims. Utility resource planners or regional transmission markets would be better.