3 ms·
Batteries are used in lieu of pumped energy storage for several purposes: - emergency use: it's much faster than even the fastest pump sets which can switch ov
by burntrelish1273 9y ago
Batteries are used in lieu of pumped energy storage for several purposes:
- emergency use: it's much faster than even the fastest pump sets which can switch over in seconds
- load smoothing to avoid spooling up/down expensive peakers too much
- daily energy arbitrage by downstream / middle consumers to buy off peak and use at peak in time-of-use billed electrical services
- store solar energy for night use
129 MWh is enough for a medium-sized town or charging several hundred Teslas.
Really though, the focus shouldn't be on huge, central systems. The savings and grid resilience is realized with many few MWh systems spread to local substation-level. This has the potential to smooth out the load to be more/less constant and makes large-scale demand more predictable.
- sitkack 9y agoThe other advantage of substation level energy storage is in not having to upgrade the feed circuits. Design for average consumption not peak. Storage and renewables make the edges of the network resilient.
- jburgess777 9y agoUK Power networks recently completed a 2 year trial of a 6MW/10MWh battery system which was installed as an alternative to adding a 3rd circuit to meet future peak demand of a town. At the end of the trial they produced a projected business case for future deployments of: Conventional reinforcement (another circuit): £5.1M Future Net Method Cost (battery): £1.6M This data is from figure 8 of "SNS Close down report v1.0". This report and other information about the trial can be found at: http://innovation.ukpowernetworks.co.uk/innovation/en/Projects/tier-2-projects/Smarter-Network-Storage-(SNS)/ http://innovation.ukpowernetworks.co.uk/innovation/en/Projec...