Renewables are simply cheaper. Over 90% of newly built renewable projects already beat fossil fuels on cost, and wind and solar are now the cheapest form of energy in human history. Solar costs have fallen 87% since 2010, and battery storage costs have dropped 93% in the same window.
The price of renewable energy also stays stable, unlike that of coal, oil and gas. Sun and wind are free and unowned - they don't rely on chokepoints, tankers or pipelines, so once built, renewables keep prices low and steady for good. Fossil fuel prices can and do fluctuate wildly: when the Iran conflict escalated, oil prices soared past US$100 a barrel almost overnight, as roughly a fifth of global oil shipped through the Strait of Hormuz. This was a shock felt in fuel and food prices worldwide within days.
As long as our energy systems depend on coal, oil and gas, household bills stay hostage to volatile energy markets. Renewable energy is as much a cost of living solution, as it is a climate solution.