TMC is an independent, primarily volunteer organization that relies on ad revenue to cover its operating costs. Please consider whitelisting TMC on your ad blocker or making a Paypal contribution here: paypal.me/SupportTMC

In the Wild: Commercial Purchase of PowerPack

Discussion in 'Tesla Energy' started by SageBrush, Mar 27, 2016.

  1. SageBrush

    SageBrush Active Member

    Joined:
    May 7, 2015
    Messages:
    1,686
    Location:
    Colorado
    • Informative x 1
  2. Ampster

    Ampster Member

    Joined:
    Oct 5, 2012
    Messages:
    614
    Location:
    Hermosa Beach CA USA
    #2 Ampster, Mar 27, 2016
    Last edited: Mar 27, 2016
    Are you suggesting that their supplier could change their TOU rate and leave all others the same? Not likely. It sounded like the savings was from incorporating solar and reducing demand charges.
     
  3. SageBrush

    SageBrush Active Member

    Joined:
    May 7, 2015
    Messages:
    1,686
    Location:
    Colorado
    I didn't mean that the utility would change terms just for this one customer. The article says
    I gather off-peak is 12 cents a kWh
    Peak is 42 cents a kWh

    Installed PV is quite a bit less than 12 cents a kWh over the life of the system so this is not a case of utility sourced charging at night into the PP to be used by the customer during peak rate time unless the business is operating after the sunset. That is why I inferred that this is an arbitrage play -- good until the early evening rate is dropped. I'm most skeptical of that rate staying high, mostly because I expect the locals to catch on to the game and cool down their homes an hour before they leave work when the rates are low.
     
  4. Ampster

    Ampster Member

    Joined:
    Oct 5, 2012
    Messages:
    614
    Location:
    Hermosa Beach CA USA
    #4 Ampster, Mar 27, 2016
    Last edited: Mar 27, 2016
    It does look like an arbitrage play in addition to a demand charge reduction. Your scenario would be a welcome solution to the duck curve problem predicted for California as more solar is installed in the state. II think systems like these can also help solve the steep ramp up of demand in the afternoons as solar generation sunsets. No doubt there is some risk to the investor, but I think it could play out well. There is a scenario that predicts extremely low or negative rates mid day as more solar comes on. That would just shift the arbitrage period.
     
  5. SageBrush

    SageBrush Active Member

    Joined:
    May 7, 2015
    Messages:
    1,686
    Location:
    Colorado
    Ahh... I forgot about demand charges. That may well explain the investment.
     

Share This Page