1. Welcome to Religious Forums, a friendly forum to discuss all religions in a friendly surrounding.

    Your voice is missing! You will need to register to get access to the following site features:
    • Reply to discussions and create your own threads.
    • Our modern chat room. No add-ons or extensions required, just login and start chatting!
    • Access to private conversations with other members.

    We hope to see you as a part of our community soon!

Solar is now the cheapest form of energy

Discussion in 'Science and Technology' started by Stevicus, Oct 25, 2020.

  1. Stevicus

    Stevicus Veteran Member
    Premium Member

    Joined:
    Sep 26, 2011
    Messages:
    15,229
    Ratings:
    +8,321
    Religion:
    Agnostic
    Solar Is Cheapest Energy: Renewable Energy vs. Fossil Fuels Cost


    It's expected that there will be more demand for solar energy in the decades to come.

    Cost was always the biggest barrier to solar, as the start-up costs made it too expensive, which is why gas and coal were generally favored.

     
    • Informative Informative x 6
    • Like Like x 1
  2. Revoltingest

    Revoltingest I have the kavorka
    Premium Member

    Joined:
    Mar 25, 2010
    Messages:
    173,949
    Ratings:
    +55,895
    Religion:
    Bokononism & Atheism
    It's more complex that cost/kilowatt.
    Sure, sure, I'm going 100% photovoltaic at me home,
    but it's not continuously available. I use DTE's gas,
    coal, & nuke sources for night power. (It's 100% cuz
    I trade excess daytime generation for it.)
    And for back-up, I have a 20kw Generac. It cost me
    $2k (great deal), as opposed to $10k for solar battery
    back-up.
     
    • Informative Informative x 2
  3. Stevicus

    Stevicus Veteran Member
    Premium Member

    Joined:
    Sep 26, 2011
    Messages:
    15,229
    Ratings:
    +8,321
    Religion:
    Agnostic
    Can the excess power from solar be stored in the solar battery?
     
  4. Revoltingest

    Revoltingest I have the kavorka
    Premium Member

    Joined:
    Mar 25, 2010
    Messages:
    173,949
    Ratings:
    +55,895
    Religion:
    Bokononism & Atheism
    Yes, to a limited extent.
    Wouldn't last long if a power outage during winter,
    with its low-in-the-sky light, & snow covered panels.
     
  5. Twilight Hue

    Twilight Hue The gentle embrace of twilight has become my guide

    Joined:
    Mar 7, 2009
    Messages:
    30,975
    Ratings:
    +12,350
    Religion:
    Philosophical Buddhism
    The only problem is the lifespan of the panel before it needs replacing. I do like solar tech though, but it's not ready to compete right now but I see its getting there.
     
    • Like Like x 1
  6. Twilight Hue

    Twilight Hue The gentle embrace of twilight has become my guide

    Joined:
    Mar 7, 2009
    Messages:
    30,975
    Ratings:
    +12,350
    Religion:
    Philosophical Buddhism
    I wish Tesla achieved his vision. I can picture solar powered aircraft above the clouds with a tesla coil on it. Imagine the possibilities!
     
  7. Revoltingest

    Revoltingest I have the kavorka
    Premium Member

    Joined:
    Mar 25, 2010
    Messages:
    173,949
    Ratings:
    +55,895
    Religion:
    Bokononism & Atheism
    And a Jacob's ladder to be cool.
    [​IMG]
     
  8. Stevicus

    Stevicus Veteran Member
    Premium Member

    Joined:
    Sep 26, 2011
    Messages:
    15,229
    Ratings:
    +8,321
    Religion:
    Agnostic
    I often wondered why batteries can't last longer. Back in the 80s, I had a walkman, and I was having to buy batteries almost every other week. Now, if I fail to plug in my cellphone for even one day, the battery will die. It's even worse with my laptop; it goes dead after a few hours without plugging it in.

    It seems that longer-lasting batteries are as elusive to technologists as warp drive.
     
  9. exchemist

    exchemist Well-Known Member

    Joined:
    Apr 24, 2018
    Messages:
    9,612
    Ratings:
    +8,552
    Religion:
    RC (culturally at least)
    Yes this is the good news we have been expecting. What we need next is to see the cost of electricity storage coming down too, since solar can't produce all round the clock, unlike fossil fuel sources. The limit to installation of solar will probably come when the daytime price for its electricity becomes too low to be viable, due to the huge number of solar installations already in place. Options can be batteries, pumped storage, or conversion to hydrogen via electrolysis.
     
    • Like Like x 1
  10. exchemist

    exchemist Well-Known Member

    Joined:
    Apr 24, 2018
    Messages:
    9,612
    Ratings:
    +8,552
    Religion:
    RC (culturally at least)
    What use is a Tesla coil on a plane?
     
  11. Revoltingest

    Revoltingest I have the kavorka
    Premium Member

    Joined:
    Mar 25, 2010
    Messages:
    173,949
    Ratings:
    +55,895
    Religion:
    Bokononism & Atheism
    Aye, battery storage density leaves much to be desired.
    But your problems sound severe. My iPhone can go
    several days without recharging. Consider your power
    management strategy.
     
    • Like Like x 1
  12. Twilight Hue

    Twilight Hue The gentle embrace of twilight has become my guide

    Joined:
    Mar 7, 2009
    Messages:
    30,975
    Ratings:
    +12,350
    Religion:
    Philosophical Buddhism
    I know they degrade over time. Too bad there isn't a universal battery that retains charge but dosent degrade as quickly.

    I stay with rechargeable batteries for most of my needs. At least it reduces battery waste and is cheaper i think.
     
    • Like Like x 1
  13. Twilight Hue

    Twilight Hue The gentle embrace of twilight has become my guide

    Joined:
    Mar 7, 2009
    Messages:
    30,975
    Ratings:
    +12,350
    Religion:
    Philosophical Buddhism
    I dunno but it sounds cool!
     
  14. Twilight Hue

    Twilight Hue The gentle embrace of twilight has become my guide

    Joined:
    Mar 7, 2009
    Messages:
    30,975
    Ratings:
    +12,350
    Religion:
    Philosophical Buddhism
    It would be great to see a return to steam power using alternative energy.

    I wonder if solar panel(s) could be used to heat up a boiler to run a steam engine?
     
  15. Revoltingest

    Revoltingest I have the kavorka
    Premium Member

    Joined:
    Mar 25, 2010
    Messages:
    173,949
    Ratings:
    +55,895
    Religion:
    Bokononism & Atheism
    Also useful....
    - Infrastructure capable of sending power from an area with an
    excess of energy to one in need. This is happening in Eurostan.
    - Power plants capable of rapid ramp up & ramp down of generation,
    eg, natural gas fired plants. These would handle intermittent demand.
    - Conservation measures.
     
    • Useful Useful x 1
  16. exchemist

    exchemist Well-Known Member

    Joined:
    Apr 24, 2018
    Messages:
    9,612
    Ratings:
    +8,552
    Religion:
    RC (culturally at least)
    You can do it as a curiosity, but it is of no commercial interest.

    Because of Carnot cycle limitations, no heat engine can in practice convert more than about 60% of the heat input into mechanical work or electricity. An electrical solar panel converts solar light directly into electricity and is not bound by this limitation.
     
  17. Vinayaka

    Vinayaka devotee
    Premium Member

    Joined:
    Feb 10, 2011
    Messages:
    31,068
    Ratings:
    +15,187
    Religion:
    Saivite Hindu
    Already been done. Article was in 2013, I don't know where that technolgy is now.

    Solar Power From Giant Mirrors Flows Into California's Grid
     
    • Informative Informative x 1
  18. exchemist

    exchemist Well-Known Member

    Joined:
    Apr 24, 2018
    Messages:
    9,612
    Ratings:
    +8,552
    Religion:
    RC (culturally at least)
    Indeed. But even in Eurostan it gets dark all at once practically (spans only 2 time zones). You've got a better chance in the US with 5 time zones by sending electricity across the continent, but there's clearly a lot of capital and maintenance cost tied up in the grid system, so you have a trade-off between grid investment and maintenance vs. storage closer to the point of generation.
     
  19. Revoltingest

    Revoltingest I have the kavorka
    Premium Member

    Joined:
    Mar 25, 2010
    Messages:
    173,949
    Ratings:
    +55,895
    Religion:
    Bokononism & Atheism
    Sharing wind, tidal, & solar energy smooths things out.
    That North Sea is quite the powerhouse.
     
  20. exchemist

    exchemist Well-Known Member

    Joined:
    Apr 24, 2018
    Messages:
    9,612
    Ratings:
    +8,552
    Religion:
    RC (culturally at least)
    Interesting. However I think with the cost of solar panels coming down, this will prove to be a technological dead end. And it only works where you have pretty intense sunshine.
     
Loading...