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>One battery breakthrough will obsolete this Maybe this is the battery breakthrough. Further gas storage of energy is cheaper than battery storage (with a fix
by benj111 3y ago
>One battery breakthrough will obsolete this
Maybe this is the battery breakthrough.
Further gas storage of energy is cheaper than battery storage (with a fixed cost for actually burning the stuff)
Are batteries ever going to get to the point of being viable for storing a week's worth of energy? A month's worth?
In a lot of the world that's what you'll need to do. Solar isn't going to cover that European January where there's no wind.
- awestroke 3y agoHydrogen storage is hard to do cheaply
- pfdietz 3y agoThe cost of an underground cavern for hydrogen storage is as little as $1 per kWh of storage capacity. So in an application where the charge/discharge power is small compared to the amount of energy you want to store, hydrogen will be among the cheapest storage options, far better than batteries.
- suoduandao3 3y agoMethane storage is cheaper than batteries, but hydrogen molecules are so small that the cost of storing it is actually pretty high.
- pfdietz 3y agoThe cost of capturing the carbon to make the methane ruins your idea.
- suoduandao3 3y agonot my idea, I prefer batteries. But Methane storage would be above hydrogen storage in my hierarchy of things I'd allocate capital to. I can see why I sounded in favour of methane over batteries but I was just acknowledging the OP's point about dollers/joule stored. Batteries have plenty of other advantages that I think put them ahead despite that figure.
- pfdietz 3y agoI don't see why you'd prefer methane storage. You're straining mightily (capturing CO2, synthesizing methane) in order to save on storage caverns, which are cheap.
- suoduandao3 3y agoI wasn't aware hydrogen storage in salt caverns was a thing, I had been thinking of a 'metal tanks' solution similar to gas stations which I know leads to major issues with corrosion.