Check out LPPFusion, they are researching an energy source that could be 10 or more times cheaper than other sources (on a wholesale basis), safe, reliable, and sustainable. Their technology could have other useful applications such as in one-sided X-Ray scanning (e.g. of transport infrastructure for preventative maintenance), cheaper desalination, and maybe even for converting to motive power such as with space or air travel. Additionally, generator units are planned to be a MW size, making them suitable for distributed energy and further lowering the cost of electricity to the end user.
I’m currently researching them with an interest to help out financially and professionally.