我們迅速研發生產能源的環保方案，但能源轉型的最大挑戰之一，是儲存。風能和太陽能的缺點是容易受天氣影響，導致產量不穩定。世界各地的能源儲存專家與電池先驅，都在尋找大量及長期儲存環保能源的方法，例如研發快速充電電池、以玄武岩和鹽儲存熱能，還有用鐵粉作為能源載體，又或者建造巨型磚塔，透過將水泥塊升降，來儲存和分配能源等。

We are rapidly developing ways to generate energy sustainably, but one of the biggest challenges of energy transition is storage. Efficient and effective storage is essential if we are to be able to manage peaks and troughs in wind and solar energy. All over the world, storage techies and battery pioneers are searching for ways to store sustainably generated energy. From the development of fast batteries to storing heat in basalt and salt. And from using iron powder to carry energy, to constructing enormous towers of blocks that lift concrete blocks to store and distribute energy.