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Interesting.
The maths with the article certainly doesn't add up, and if all you want out is electricity then its a bit weak.
But if you could store safely a more serious amount of hydrogen and use it for electricity and heat in winter, you could possibly make a really serious dent in your energy bills.
My problems with PV cells at the moment are basically
they produce small quantities of electricity when electricity is needed least (ie in full sun in the summer, mostly) They don't contribute to any reduction in capacity because France, for example, still needs to produce in the region of 110 GW in the early evening of December weekends. PV cells don't contribute to this. And if you have capacity to generate large quantities of electricity, it makes no economic sense not to use it.
I pay, through my bills, so that electricity (that I can buy unlimited quantities of at 10 cts/KWh) is purchased at sometimes 40 cts per KWh.
Over the entire life of the system, I seriously doubt the efficiency. When the panels, all the kit and all the rest are taken into account, is the pay back in electricity significantly greater than the energy input to get the system fabricated and installed and kept operational?
My main objection is that the money and effort expended would almost certainly be better used increasing insulation, and installing energy efficient kit, which would actually result in a lower electricity consumption and thus could facilitate a reduction in capacity. You then take this ability and close the least efficient/most polluting power plants. That's the way to do it! |
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26-11-2019 04:11:55
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