Current Energy Graphs on Current Energy [RE-wrenches]

[Dean T. Newberry]

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Hi Alan,

    I have been looking at your "Supply and Demand for Electricity in 
California" Charts at http://currentenergy.lbl.gov/ca/. [Note: your 
clock seems about 15 minutes fast.]  I am a Solar PV rep and installer.
    I was up at SMA a couple of weeks ago and overheard that they had 
sold about 300MW of  grid intertie inverters in the last couple of 
years. Perhaps the CEC has accurate information on the scope of the  "PV 
Intertie Plant". Other information is that the transmission and 
distribution losses are about 30%, so the central station generator 
replacement value of the intertie inverters sold is about 428 MW mostly 
made from 11:00am until 4:30pm (my 13 systems of about 2.5kW each  are 
more focused on the peak).
    The Current Energy Today Sunday June 15th is about 27,000MW. If most 
of SMA systems are in California, then they represent about 1.6% of the 
supply during the peak.
    More interesting is the Net Import at about 6000MW, Intertied PV 
would represent about 7% of the Import supply today. My guess is that 
since that power is wheeled over longer lines and higher voltages the 
losses for that power are greater, and the PV benefit somewhat greater.
    I am wondering if there is a method of measuring or estimating the 
contribution of the State's distributed PV plant and including it on 
your chart? That begs the question of what the contribution of Cogen, 
Wind and other renewables might be. Logically it might make more sense 
to combine all renewables in a "Renewable Capacity or Supply".
    Your permission please to include your chart on my website, with 
attribution. Review at http://www.dcn.davis.ca.us/go/deant/ and click on 
the "Today's Electricity" link.

    Do you have any idea where I can get:
        * the spot price quote for peak electricity for the california 
market
        * the generation mix each hour, ie nuke, gas, oil, hydro, wind etc.
        * long term contract supply
        * and other stuff to figure out what the electrical and 
environmental benefits of renwable energy might be?

Thanks for your work on this chart and bothering with my ruminations 
late on father's day, (my kids are off to camp and other places).

cul  deant at dcn.org

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