Wednesday, January 29, 2014

Electrical storage from PV - GE blog posting

28 Jan 2014: There's an interesting posting about electrical storage on the Good Energy blog.  It's going to be one of the next big things because the primary criticisms of renewable energy is intermittency. There are methods which require large civil engineering works (such as pumping to mountain lakes), but how does the domestic householder do this?
  Will Vooght's article discusses this and mentions research at Harvard that points a way to the future. Read more at: http://www.goodenergy.co.uk/blog/articles/2014/01/28/the-truth-about-renewable-energy-storage
  GE have partnered with a British firm Moixa, using funding from DECC,  the Dept of Energy and Climate Change, to develop better storage solutions for domestic users. The ideal is to charge up the storage during the peak generating hours of your PV roof, and then have backup power for lightly powered night use, e.g. lighting - works best if it is 12v.
   It is something I have been wanting to do, with the extra PV panel on the house extension. My effort in 2012 to build a battery out of NiCad Cells didn't work. The cells behaved unreliably. The other problem is that an inverter is a power drain, and it is more efficient to run 12Vdc devices than to try to convert it to 240Vac. I might have to 'bit the bullet' and get a deep charge Lead Acid battery to get the PV panel working.

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