6 ms·
Batteries make sense on the scale of days. My coming solar installation will yield ~250% of my usage may-September and 10% of my January usage. I’d rather store
by brtkdotse 4y ago
Batteries make sense on the scale of days. My coming solar installation will yield ~250% of my usage may-September and 10% of my January usage. I’d rather store the summer excess production until winter.
- cinntaile 4y agoI guess the price of adding additional solar panels was pretty small compared to the labour and inverter costs or why is it so overdimensioned? I don't think private homes will have their own hydrogen production and storage facilities, this is more for industrial scale facilities.
- solarkraft 4y agoIn some countries you can sell your excess solar electricity at decent prices, this may have been a part of the motivation.
- brtkdotse 4y agoThat’s the case here and currently the economics are in my favor (I’ll probably be able to sell for more than I buy). That however, can change swiftly.
- simne 4y ago> I don't think private homes will have their own hydrogen production and storage facilities May be you right, but people already use compressed air storage's to store energy at private homes. Sure, they are low pressure, for safety.
- chopin 4y agoWhere? In Germany I never heard of this. How much energy can these store?
- simne 4y agoI've hear, in France air energy has wide adoption, even few decades ago, before electricity, exists compressed air ring in Paris. In Germany still exists lot of recognizable buildings, where stored methane. Some of them converted to culture/arts centers, because their specific design, not suitable for living or work (large cylinders).
- cinntaile 4y agoDo you have any examples? I know these CAES are sometimes used on an industrial scale but I haven't heard of small scale solutions for individual homes.
- simne 4y agoYou just looking wrong direction. Low pressure solutions are not shown on TV, because on highly concurrent market, need something more distinguished. But LOW pressure really easy achievable with plumbing technologies.
- cinntaile 4y agoIt would be good to have some examples, to prove that this actually exists.
- simne 4y agoAre you joking? Just visit nearest building market (supermarket) and ask, how large pressure could withstand their tubes, furniture, etc. And learn physics, your life will change for better.
- cinntaile 4y agoMy knowledge of physics is alright. Regular stores don't use pressurized air to produce electricity. They use electricity directly for obvious purposes.
- simne 4y agoYour knowledge of physics is near zero. With good knowledge you will know, that in typical auto service electricity is not used, they use pneumatic elevator, pneumatic drill machines, etc. Usually, in office environments, pressurized air created by electric compressors, but large share of mobile services use compressors powered directly from combustion engine, and every modern semitruck include compressor and could provide pressurized air in limited amounts.
- fbdab103 4y agoHaving not run the numbers, that sounds like it would never be profitable for a home installation to solar->hydrogen->storage for months->burn as needed. Lot of capital on the various required components. Edit: I guess if you wanted to go fully off-grid, this would be a useful option.
- danboarder 4y agoI also think these solar-hydrogen systems will benefit from scale as the marginal cost of production drops. Examples like the cost of producing microwave ovens, for example, have dropped from thousands to less than one hundred dollars with economies of scale. As a manufacturing sector of competing parts suppliers emerges, we will see price come down to benefit home owners.