XPost: alt.california, alt.politics.republicans, talk.politics.guns   
   From: muratlanne@gmail.com   
      
   "Jim Wilkins"  wrote in message news:vmgspb$1272v$1@dont-email.me...   
      
   “I don’t think it’s as much of a story of regulation as it is economic   
   efficiency,” said Jay Turner, professor of environmental science at   
   Wellesley College. “The price of batteries and renewable generation has   
   fallen so much that batteries and solar and wind, when put together, are   
   so cost-competitive.”   
      
   -------------------------------------------------   
   The battery depreciation cost per KWH discharged is a major factor. For   
   lead-acid it could be $0.20 or more per KWH, making "free" solar as   
   expensive as grid power. $100 / 500 = $0.20.  Lithium, especially LiFeP04   
   rated for thousands of cycles, promises storage costs in the range of $0.05   
   per KWH.   
      
   https://www.amazon.com/LiFePO4-4000-15000-Lifetime-Application-T   
   olling/dp/B0BJ78JZ2B/ref=asc_df_B0BJ78JZ2B?   
   $200 / 4000 = $0.05.   
      
   --------------------------------   
   4000 daily cycles at 100% DOD is almost 11 years, beyond the claimed 10 year   
   lifespan. If the battery performs as specified the longer life at lower DOD   
   may not be useful.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)