Gravity battery
Energy Vault, a developer of utility-scale storage technology promises to deploy gravity-based storage.
- A gravity battery is a type of electricity storage device that involves lifting (charging) and lowering (discharging) a heavy weight.
- When there is plenty of green energy, the batteries use the power to lift a heavy weight (or blocks) either high into the air or to the top of a deep shaft.
- When electricity demand picks up, the blocks are lowered one by one, releasing kinetic energy that is used to rotate a motor and generate electricity.
Greenwashing
The number of instances of greenwashing by banks and financial services companies around the world rose 70% in the past 12 months.
- Greenwashing is the practice of making brands appears more sustainable than they actually are.
- It may involve marketing strategy, misguided publicity stunts, or simply changing the packaging of an existing product while continuing to use unsustainable ingredients or practices.
- Coined by – Environmentalist Jay Westerveld
SAMPRITI-XI Exercise
- An annual joint military exercise between India and Bangladesh.