Not mysterious, just slow and expensive.

  Across the world, according to BNEF, the cost of grid scale battery packs has fallen another 45 per cent in 2025 following a 40 per cent fall in 2024. The UK-based energy think tank Ember has now also reached the same conclusion, underlying its unexpected impact on solar power.

citing: https://ember-energy.org/latest-insights/global-electricity-... and similar reports.

Resource prices for batteries did spike at various times in the past, this had more to do with opening and then closing a lot of production sites by mining companies than with any real meaningful supply issue.

Urban grid scal battery parks are on the rise globally, industrial parks have always had special status and can still concentrate modern efficient peaker turbines and buffer storage to bridge, if applicable, and use any general daytime excess.