- Burj Khalifa designer to use gravity to turn skyscrapers into batteries | The 10-year agreement is expected to result in multi-GWh of long-duration Energy Vault GESS deployments to contribute to the SADC region’s energy storage needs, which are estimated to be 25 GW/125 GWh by 2035. https://interestingengineering.com/energy/burj-khalifa-skyscrapers-to-store-energy 30 comments futurology