A vanadium redox flow battery (VRFB), is reportedly very competitive to lithium-ion battery options when looking at grid-scale storage. Why? They are apparently more easily scaled-up, can release charge over a far-more extended period of time (10 - 18 hours) and can reportedly be charged and discharged an unlimited number of times with no capacity degradation - meaning they last decades. Oh - any they also don't catch on fire as easily as lithium-ion batteries either.
Tibber is the world's first fully digital energy company selling wholesale renewable energy to customers. They can also connect all your smart devices and automatically optimise your energy consumption for you. You can also control your consumption yourself via the app, whilst receiving real-time and forecasted wholesale pricing information. Perhaps most interestingly, Tibber is an energy company that wants you to reduce the amount of energy you consume - ideally by at least 20% - why? Because the "greenest energy is the energy you don't use".