I don't see where anyone is proposing this as multiple-week storage for the whole grid? That's why you're investigating hydro storage: https://www.ess-news.co

I don't see where anyone is proposing this as multiple-week storage for the whole grid? That's why you're investigating hydro storage: https://www.ess-news.com/2025/02/11/fortum-explores-new-pumped-hydro-storage-oprtunities-in-sweden/ https://www.ess-news.com/2025/02/11/fortum-explores-new-pump...