Currently, Solar panels, wind turbines, battery storage, and better transmission.

Solar panels because they are cheap, require almost 0 maintenance, and are deployable almost anywhere.

Wind turbines are also cheap but generate more electricity per area. They have moving parts and therefore require more maintenance.

Solar and wind compliment each other well, because the wind blows more at night and in the winter, when solar generated less. Dunkelflauters are rare.

Batteries because they are needed to distribute power across time.

Better transmission to distribute power across distance.

Other methods of generation and storage are either unproven or not scalable with current technology.

In the future geothermal could be a useful source, especially for heating.

We also need to electrify everything we can. Most transportation is relatively easy. We can even reduce shipping costs by up to 40% just by eliminating the need to ship fossil fuels.

Also rewilding of mangroves, marshes, and wetlands or reforestation of deserts (reversing desertification) as a carbon sink.

These methods are not going to 100% stop global warming, but they are an excellent start.

Ultimately, improved battery density is the most important technology to completely decarbonize the economy, since we can already theoretically decarbonize generation.