100% agree acceleration of battery technology should be the number one priority. First there are several solutions that have proven prototype performance. How to accelerate the progress. Money and coordination of lab efforts. I plan to write up some of the details but the short vision is ramping up production and proving industry standards will be met takes many versions and many types of testing. All of that can be accelerated. In addition firms working in the same area (solid state batteries,or flow batteries or Si anodes or Na Batteries are each making discoveries. They need an incentive to share the process and combine the best practices from all. Essentially increase R&D budgets, purchase the current technology or define terms for cross technology. Bring the promising Tech to market in 5 years instead of 10. There is more but bottom line there is a path to batteries with 10% of the cost.
As to storage over months or weeks that is a separate effort but should also be accelerated.