RE: If you want some reading...24 Dec 2020 22:33
I have read the report and those cost are based on ‘RFBs’ as only lasting for 10 years when we all know that they last probably double that with minimal maintenance.
The power (kW) of the system is determined by the size of
the electrodes and the number of cells in a stack, whereas the energy storage capacity (kWh) is
determined by the concentration and volume of the electrolyte. Both energy and power can be easily
adjusted for storage from a few hours to days, depending on the application. This flexibility makes RFBs
an attractive technology for grid-scale applications where both high-power and high-energy services are
being provided by the same storage system. Sufficient data are not currently available to estimate the
life of RFB stack components, such as membranes and electrodes, with a proposed lifetime of 10 years.
There is not a substantial amount of capital cost data available for redox flow systems. Price information was primarily provided by discussions with an energy storage expert, an RFB manufacturer, and from past research conducted by PNNL.