To make solar power viable, we need a solution for overnight energy storage.
Batteries are complicated.
Do you know what isn't? Water go up. 
To make solar power viable, we need a solution for overnight energy storage.
Batteries are complicated.
Do you know what isn't? Water go up.
That link isn't working for me:
Edit: is it this one? https://youtu.be/oCv3ygvEjFo
I found a YouTube link in your comment. Here are links to the same video on alternative frontends that protect your privacy: