Battery backed renewable power is competing primarily with natural gas in being able to absorb and release power. They have to last 10-20 years. Batteries heat

Battery backed renewable power is competing primarily with natural gas in being able to absorb and release power. They have to last 10-20 years. Batteries heat up when you charge or discharge them, which causes lifetime decrease and efficiency losses. If these capacitors have lower internal resistance (and it sounds like they do) and last reliably for 10 years... yeah, I can see these being a next generation alternative to battery based storage at the grid level. If they can manufacture them in a rectangular plate kind of form factor like a cell phone battery, I imagine there could be a huge benefit there. I think people would pay a premium to be able to charge their phone to last for 10 hours in 12 minutes (50C charging rate). This is exciting. That they're in production and being tested by outside partners is a huge validation point that this is real.