Solar by proxy silver........../Battery
The economics are already very attractive. Solar has become “the cheapest form of electricity in history“, according to the International Energy Agency (IEA), since 2020. More recently, battery economics have improved dramatically in just the last two years. Following a sharp 40% fall in turnkey battery costs in 2024, 2025 saw another big fall of 31%. Previous Ember analysis has shown that falling battery costs and improving storage technologies are making round-the-clock solar electricity increasingly viable, enabling it to meet 90% of electricity demand efficiently in solar-rich countries like Mexico, and helping them become global solar superpowers. India is also one of these solar-rich countries. With access to solar and battery technologies at globally competitive prices, it can unleash this potential to meet large shares of its demand.
