Storing Renewable Electricity

One of the problems of using renewables (solar and wind) to generate electricity, is that the sun doesn't always shine and the wind doesn't always blow. So what to do with any excess electricity produced  at times of peak generation? One solution is to create a large Liquid Air Battery like the one being constructed  near Manchester in the UK (https://www.theguardian.com/environment/2020/jun/18/worlds-biggest-liquid-air-battery-starts-construction-in-uk). Any excess electricity (which could overwhelm the grid) is used to liquefy gases in the air. These are then stored in tanks. When the energy is needed again, the liquid is allowed to return to the gas phase and used to drive turbines to generate electricity. The Manchester construction will be the world's largest to date and be capable to powering thousands of homes. It is scheduled to be in operation by 2022. This type of development should facilitate moving away from using hydrocarbons or nuclear to power electricity generation.