Evolution in Battery Energy Densities

Evolution in Battery Energy Densities

For decades stable grid energy storage applications have often been addressed
by using either Valve-Regulated Lead-Acid (VRLA) gel tubular OPzV or flooded
OPzS batteries. Across Europe, these batteries have been incorporated into the
infrastructure of utilities, telecommunication providers, and oil and gas companies,
as well as being featured in many industrial facilities too. There are strong reasons
why they have been so popular in the past, and are thereby still widely deployed as
legacy items. Most notable of these is the long operating lifespans that they could
achieve, but also their relatively low cost and good reliability. In a modern context,
however, the drawbacks of OPzV and particularly OPzS technologies are becoming
increasingly clear - and the time has now come for implementing changes.