The real problem with renewables.

The problem with renewable energy is not always energy production because the wind always blows & the sun will always shine. Renewables are also scalable depending on the amount of energy you need. The problem with renewables is storing the energy. On a cloudy day, photovoltaics still work & need that energy to be stored. There have been lots of breakthroughs in making industrial scale batteries for power production. Many battery manufacturering methods involve child labour & polluting the environment for indigenous communities while some batteries can be manufactured with simple salt. Also, with renewables, I'm of the belief that batteries are used more frequently than with coal, hydrogen & nuclear. This causes batteries to lose efficiency over time. Some batteries are created in consideration of this problem & can be easily recycled without much pollutants. For industrial needs, a battery for renewable energy needs; 1) to be resilient for long term use, 2) made with abundant, easily found materials [e. g. iron, carbon, sodium] & 3) should be easily recyclable for future use.