Replies

• 3 April at 5:01PM

  Ectophile Forumite

  6.3K Posts

  

  Forumite

  3 April at 5:01PM

  It rather depends on how you generate the hydrogen.  The cheapest method is to convert methane into hydrogen and carbon dioxide.  But that's not exactly green (because of the carbon dioxide), and you end up with less energy than was in the methane.  So it's pretty pointless.

  
  

  The alternative is electrolysis of water.  Using solar panels, you would end up with more hydrogen than you know what to do with in the summer, and nowhere near enough in winter.  So you need a massive hydrogen tank in the back garden.
  

  If it sticks, force it.
  If it breaks, well it wasn't working right anyway.

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• 3 April at 5:32PM

  lohr500 Forumite

  375 Posts

  

  Forumite

  3 April at 5:32PM

  I have zero knowledge of hydrogen production or storage. But every bone in my body says it won't be cost effective for a single user to generate and then pressurise and store enough hydrogen cost effectively to run a domestic gas fuelled boiler.
  
  If you want to look at greener alternatives to gas that are available off the shelf today, then heat pumps and biomass would seem to be the way forward, supplemented by solar, wind and battery storage.
  
  Personally, I do worry about any of the alternatives when the payback runs into much more than 10 years. I have big concerns over the longer term reliability and maintenance costs for things like wind generators, battery arrays and even heat pumps.
  Perhaps as adoption increases, capital costs will reduce.  

  1
• 3 April at 6:56PM

  mumf Forumite

  401 Posts

  

  Forumite

  3 April at 6:56PM

  Hydrogen heating on the scale that the Eco fantasists tell us will cure our energy woes ,is just that.A fantasy. 

  1
• 4 April at 1:30PM

  canaldumidi Forumite

  3.5K Posts

  

  Forumite

  4 April at 1:30PM

  Off topic (sorry) but the more I read about alternative energy sources, the costs/benefits etc, the more it seems to me the answer is to get away from single property energy use/production.

  
  

  Community systems surely are the way forward, whether based on wind, solar, heat pumps (or even hydrogen?) or a combination. But we are obsessed with individulism, and with not being exploited by our neighbours (eg using more community energy than we do).

  With all the new estates being constantly built everywhere, why is energy production and use not planned on a per estate basis instead of per property?
  

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