Solar Satellite Power
The idea has been around for many decades, but now that we have the tech to do it, we really should. This article from adAstra clearly explains the benefits and general how-to of putting such things into orbit.
However, this is a centralized source of energy–receivers could be damaged somehow and put off-line, leaving hundreds of thousands or even millions of people without energy at a time. But the situation we’re in at the moment demands this undertaking as a means to get us off foreign (as well as polluting) sources of energy. Once we get an SSP up, we’ll have the infrastructure in place to build more at a cheaper cost and reap incredible rewards. But we’ll still need to increase the efficiency of homemade energy such as solar, wind, heat differentials, and others. Such decentralized systems are mandatory for resilient systems, something our energy supply should be since it is the core of every industrious society.