The process of creating nuclear fusion is a particularly challenging one. It requires producing plasma at temperatures of at least 100 million degrees Celsius (180 million degrees Fahrenheit). That level of heat, seven times hotter than the very center of the sun, is considered the fusion threshold.
The Sparc reactor is the most promising development yet in not just proving that reaching the fusion threshold is possible, but actually harnessing the reaction and generating a seemingly endless supply of carbon-free energy.
One of the common ways to capture wave energy, is via a point-absorber which harvests energy from the up and down movement of waves. Australia's RMIT has designed a point-absorber with a novel counter-rotating dual turbine. The design can apparently deliver twice the efficiency of other currently available point-absorber wave technologies. https://www.rmit.edu.au/news/all-news/2021/aug/wave-energy-technology
One solution to power outages is the notion of power storage, instead of real time usage. The notion of energy storage can either be at utility scale, which includes all energy storages at the side of the utility provider, or energy storage can include behind the meter storage, which is all measures taken by households and industry to store energy or ultimately remote power systems which are supplied to remote areas that are not typically connected to the grid. Israeli companies are the leaders in innovation concerning energy storage, with expertise in hydrogen as well as mobile energy units. https://israeltrade.org.au/2021/09/23/the-future-of-storage-energy/