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  • #16
    Any tips for simplified approaches for estimating the impact of TOU rate/period changes on PG&E? With baseline + tiers complicating the matter? Or to quantify the error margin a bit? A straight revenue based approach tells me something, but not sure how off when how my baseline is allocated is affected so much by usage.

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    • #17
      Originally posted by ltbighorn View Post
      Any tips for simplified approaches for estimating the impact of TOU rate/period changes on PG&E? With baseline + tiers complicating the matter? Or to quantify the error margin a bit? A straight revenue based approach tells me something, but not sure how off when how my baseline is allocated is affected so much by usage.
      Take this for what it's worth: From my experience, the only way to get close to accuracy in a $$ estimate based on usage is to understand and duplicate the rate tariff you will be using with a spreadsheet or other tools. Small calculation errors often produce large bottom line errors. I have not found a simple way to get reasonable accuracy. Most tools from models and others (vendors) are inaccurate, either in method or are out of date.

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      • #18
        Originally posted by ltbighorn View Post
        Any tips for simplified approaches for estimating the impact of TOU rate/period changes on PG&E? With baseline + tiers complicating the matter? Or to quantify the error margin a bit? A straight revenue based approach tells me something, but not sure how off when how my baseline is allocated is affected so much by usage.
        Are you looking at E-6? There was a detailed breakdown of how PG&E portions out the baseline allocation into the TOU periods in this post, with a few more examples later in the thread:

        https://www.solarpaneltalk.com/forum...754#post122754

        It was complicated enough that I didn't try to adapt other TOU calculators I had built, but I'd 2nd J.P.M.'s suggestion to put in the effort if you want an accurate calculation.
        CS6P-260P/SE3000 - http://tiny.cc/ed5ozx

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