2 ms·
Electrolysis was never the issue. The high cost of storing hydrogen and the high level of wastage is the main problem.
by pydry 5y ago
Electrolysis was never the issue. The high cost of storing hydrogen and the high level of wastage is the main problem.
- pfdietz 5y agoHydrogen is very cheap to store, when stored underground, two orders of magnitude cheaper than storing energy in batteries (per kWh of storage capacity). As for wastage, if you are talking about round trip efficiency, that becomes relatively unimportant when renewable energy is cheap and the storage use case has few charge/discharge cycles (not daily storage, but long term, even seasonal, storage, and rare event backup, and of course supplying hydrogen to already existing industrial users of the gas.) Capital cost of electrolysers was indeed the issue, if you want to use overproduction from renewable sources to power them.