No battery farm can protect a solar/wind grid from an arbitrarily extended period of bad weather. If you have N days of battery storage and the weather doesn't cooperate for N+1 days, you're in trouble.

Even a day or two of battery backup eliminates the cost advantage of solar/wind. Battery backup postpones the "range anxiety deadline" but cannot remove it. Fundamentally, solar and wind are not baseload power solutions. They are intermittent and unreliable.

Nuclear fission is the only clean baseload power source mature enough to be widely adopted. After 70 years of working with fission reactors, we know how to build and operate them at 95%+ efficiency (https://www.energy.gov/ne/articles/what-generation-capacity). Vogtle 3 and 4 have been operating at 100%.

Today there are 440 nuclear reactors operating in 32 countries.

Nuclear fission power plants are expensive to build but once built the plant can last 50 years (probably 80 years, maybe more) and the uranium fuel is very cheap, perhaps 10% of the cost of running the plant.

This is in stark contrast to natural gas, where the plant is less expensive to build, but then fuel costs rapidly accumulate. The fossil fuel is the dominant cost of running the plant. And natural gas is a poor choice if you care about greenhouse emissions.

Microsoft is paying $100/MWh for 20 years to restart an 800 MW reactor at Three Mile Island. Sam Altman owns a stake in Oklo, a small modular reactor company. Bill Gates has a huge stake in his TerraPower nuclear reactor company. Amazon recently purchased a "nuclear adjacent" data center from Talen Energy. Oracle announced that it is designing data centers with small modular nuclear reactors.

In China, 5 reactors are being built every year. 11 more were announced a few weeks ago. The United Arab Emirates (land of oil and sun) now gets 25% of its grid power from the Barakah nuclear power plant (four 1.4 GW reactors, a total of 5.6 GW).

Nuclear fission will play an important role in the future of grid energy, along with solar and wind. Many people (Germany, I'm looking at you) still fear it. Often these people are afraid of nuclear waste, despite it being extremely tiny and safely contained (https://en.wikipedia.org/wiki/Dry_cask_storage). Education will fix this.

Nuclear fission is safe, clean, secure, and reliable.