As the US pursues advancements in long-duration energy storage (LDES) technologies to help accelerate grid decarbonisation, Oregon-based sector player ESS Inc (<a href="https://www.nyse.com/quote/XNYS:GWH" target="_blank">NYSE:GWH</a>) says that more needs to be done, including when it comes to rewarding these systems adequately for the value they provide to electricity markets.