Massive battery installations plus solar are already cheaper than operating an *existing* natural gas peaker plant in California. Batteries that are 50% cheaper will make that true across the U.S. That could happen by 2025 if Tesla's new battery process is successful.
Battery installations' faster response to grid demand also means they can quickly undercut remaining operating non-baseline usage, making the most polluting plants even less economically viable.
Excess storage in EVs and batteries will allow flattening the duck curve to rely even more on efficient baseload and shift renewable energy production to times of demand.
Things are going to go into overdrive faster than nearly all predictions... but still not fast enough for net zero :(