Thanks for the comment, you make some great points :) by the way, you should look into non-electrical power storage - pumped storage is the most common, 99% of electrical storage is pumped storage. Essentially, a volume of water is pumped from a low basin to a high basin, converting electrical energy into gravitational potential energy. Then when energy demands exceed supply, the water is allowed to flow back down, and the flow is used to turn a generator, converting the kinetic energy into electrical energy. It’s approximately 80% efficient. It’s less responsive than on-grid electrolytic batteries but all you need is water and simple materials, it’s easy to maintain and has a much longer duty cycle than lithium ion or sealed lead electrolytic batteries and even capacitors - which are too expensive for real on-grid storage solutions, and the benefits of capacitors (high current) aren’t really needed or even desirable for the grid.