Solar roof

Discussion in 'Prime Fuel Economy & EV Range' started by citiprius, Dec 2, 2018.

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  1. citiprius

    citiprius Active Member

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    I really think it should be available in the USA market :(


     
  2. axle2152

    axle2152 Active Member

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    I wonder how much power the solar roof generates. I just don't think given the large capacity of the HV battery that the solar roof would justify the added cost. If they would give some specs as to how much the panel can make...say 50 watt hours, then someone like me might go oh wow 50 watt hours, that would add a few miles of EV range over the course of a day at work.
     
  3. bisco

    bisco cookie crumbler

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    agreed, a lot of money for a little gain. more gimmicky than anything else. i don't think we'll ever see it in n/a.
     
  4. Tideland Prius

    Tideland Prius Moderator of the North
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    180W

    Some new information on the non-US bound solar roof | PriusChat
     
  5. Marinna

    Marinna Junior Member

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    So assuming your electricity bill is $0.15/KW, you have to spend $3000 for something that will take 20000 hours to break even... and it will only take you 44.4 hours of direct sunlight to full charge your car for 25 miles, which is about 4 days in the best possible scenario. Nice...
     
    #5 Marinna, Jan 3, 2019
    Last edited: Jan 4, 2019
  6. bisco

    bisco cookie crumbler

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    every little bit helps in japan. here? we waste more electricity than they use
     
  7. Bill Norton

    Bill Norton Senior Member

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    Yeah, a 180 watt solar panel for $3000 is outrageous. Save you dollars and get a decent home solar system.

    Also the implementation seems strange.
    Why have a secondary battery collect that measly 180 watts, store it, and then send it to the main HV battery pack?
    You have more charge/discharge inefficiency with that extra step.
     
  8. Tideland Prius

    Tideland Prius Moderator of the North
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    Toyota estimates about 1,000km (620 miles) a year on solar. Obviously it depends on how much sunshine you get per year.

    It’ll work in Japan since the car is parkedduring the weekday and they take the train to work. So that means they can drive on the weekend on solar power and charge during the week.

    It doesn’t work that effectively in the US where we drive everyday so we may just get a few miles per day of solar powered miles.
     
  9. bisco

    bisco cookie crumbler

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    an island might be a great place
     
  10. Marinna

    Marinna Junior Member

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    It is not effective anywhere. 620 miles is roughly one full tank of gas (11.3 gallon), even double the California gas price it at most worth $80. It will take 37 years to start saving money. Most solar panel has a 20 something years life cycle, let alone the life cycle of a car. Why bother?
     
  11. Tideland Prius

    Tideland Prius Moderator of the North
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    Because you have to start somewhere?

    My solar panel is working fine (granted my car is only 9.5 years old, so almost halfway through its life)