Duck Energy is building Gravity batteries to create grid scale long term energy storage. Duck Energy utilises existing mine shafts to store energy from renewable sources and then provide the energy back to the grid at high demand times in the evening or winter. This will reduce seasonal changes in energy prices for commercial and private customers.

• 0 Loss Long Term Storage Gravity batteries store energy as gravitational potential when charged this means that there is no loss due to chemical decay.

• 0 Wait Time Instance start time means that the service can react to grid demand is seconds.

• ∞ Cycles Gravity batteries can be charged and discharged without losing capacity as long as needed.

• Multi-decade Life Span With minimal upkeep and maintenance gravity batteries can have a life span of decades or longer.

Issues with Cemical bateries ¶

Common chemical batteries used in laptops, phones, and cars, require many exotic rare earth elements like Lithium to store energy. These rare earth elements require a lot of energy and to extract and process into usable batteries. They also break down over time reducing their capacity and useful life space. Gravity batteries don’t require rare earth materials or exotic chemical mixtures. Gravity batteries use the same principles as those found in grandfather clocks, where a large weight is lowered to release stored energy.