There are a combination of different things. Firstly, better capacity factor for onshore wind, offshore wind becoming cost competitive and the emergence of flo

There are a combination of different things. Firstly, better capacity factor for onshore wind, offshore wind becoming cost competitive and the emergence of floating offshore wind reduce a bit the intermittence, then the cost of managing it Secondly renewable is becoming so cheap that installing more than peak demand and setting up curtailment is cost competitive and reduces the intermittence and the cost of managing it. There are also solar project not optimizing for maximum production, but for producing when needed. Solar-plus-storage is becoming more and more common for new project, with cost falling. Generally all the batteries cost are in free fall while we are just at the beginning of the market expansion: massive economy of scale are on the way, with proven technologies More electrical storage are coming... Flow batteries, pumped hydro on isolated reservoir (eg Gordon Butte), liquid air, underground compressed air, stacked blocs, hydrogen... And there are many other tech in the lab at the same level development of SMR. Of course all the promising tech wont be a success or be cost competitive, but with SMR you bet on one tech, here you bet on more than a dozen tech. Virtual Power plant and Demand-response project and market are blooming (and that is a start)... This last point open a wider market for thermal storage, with existing cheap and mature technologies, and many developing project (relatively low tech) like inter seasonal heat or cold storage