Avalanche Energy, a small startup building a small nuclear fusion reactor, just notched a technical milestone that might bring this elusive technology closer to commercial generation of low-carbon power. “The next big milestone we’re hopefully announcing in a year or two is that we are able to densify this plasma not only at the right energy, but at densities where it’s interesting for energy generation,” he added.  SolarHow the rooftop solar industry is adapting to California's new rulebookEnergy efficiencyAirbnb will help some hosts pay for new heat pumpsSolarGoogle’s latest climate plan? Skip grid backlog, mimic community solar Energy storageTesla's battery-storage sales are growing way faster than EV sales