Slashdot Mirror


California Has So Much Solar Power That Other States Are Paid To Take It (mic.com)

"On 14 days during March, Arizona utilities got a gift from California: free solar power," reported the Los Angeles Times. Mic reports: California is generating so much solar energy that it is resorting to paying other states to take the excess electricity in order to prevent overloading power lines. According to the Los Angeles Times, Arizona residents have already saved millions in 2017 thanks to California's contribution. The state, which produced little to no solar energy just 15 years ago, has made strides -- it single-handedly has nearly half of the country's solar electricity generating capacity...

When there's too much solar energy, there is a risk of the electricity grid overloading. This can result in blackouts. In times like this, California offers other states a financial incentive to take their power. But it's not as environmentally friendly as one would think. Take Arizona, for example. The state opts to put a pin in its own solar energy sources instead of fossil fuel power, which means greenhouse gas emissions aren't getting any better due to California's overproduction.

The Los Angeles Times suggests over-construction of natural gas plants created part of the problem -- Californians now pay roughly 50% more than the rest of the country for power -- but they report that power supplies could become more predictable when battery storage technologies improve.

8 of 324 comments (clear)

  1. So Make Hydrogen by Ken+McE · · Score: 4, Insightful

    So why not take that excess electricity and make hydrogen out of it?

    1. Re:So Make Hydrogen by gurps_npc · · Score: 4, Insightful

      Not cost effective on a large scale. Needs way too much storage capacity. Worse, the state often has droughts so fresh water is EXPENSIVE, while salt water has huge corrosion problems when making hydrogen.

      Basically, storing electricity is hard. It's why their has been so much investment in batteries. Its the major technological issue holding us back.

      It's why electric cars are still rare, the reason why planes need fuel, and the reason why cellphones get hot and need to be recharged every freakin day.

      --
      excitingthingstodo.blogspot.com
    2. Re:So Make Hydrogen by SEE · · Score: 1, Insightful

      Because, you know, it's a totally worthwhile capital investment to make massive desalination capacity that you run a tiny percentage of the time with no relationship to the demand for water. Tell me, are we also going to pay the workers to stand idle, or will we just expect there to be a bunch of trained unemployed people living nearby that we can hire to staff it when the power's available?

  2. ... in order to prevent overloading power lines. by angel'o'sphere · · Score: 5, Insightful

    Why are the reporters always writing such a nonsense?

    You feed power into the grid: it needs to be consumed. Or you can not feed it in.

    And: I guess the solar power was teleported to Arizona, to prevent "overloading a wire"?

    --
    Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
  3. Re:energy storage by fazig · · Score: 4, Insightful

    Pump water storage is a pretty solid technology as it can store massive amounts of potential energy. But like many things it only works properly under circumstances where you have an abundance water available and also have the space to store that water. And then again we're talking about California here, where you can get fined for wasting water during the rather frequent draughts. Well, at least that's what the internet tells me. I don't live actually there so your mileage may differ.

  4. Least worst option by sjbe · · Score: 5, Insightful

    It's harder than you think, any sort of 'storage' will be either potentially highly toxic (as in batteries), require lots of investment (like hydro) and take up lots and lots of space

    "Toxic"? As opposed to fossil fuels or uranium which are just so amazingly safe? Most batteries are recyclable (including lithium batteries) - the only issue is whether it is economical to recycle them. We're looking for the least worst option and everything indicates batteries + solar/wind are likely a major part of the least worst options. Any toxicity from batteries is easily justified in the face of the alternatives.

    Hydro simply isn't an option in most locations. It's fine where it's available but the capacity for it is limited and regional.

  5. Re: Stop burning the gas. by NEDHead · · Score: 3, Insightful

    Just for the record: The sun is still there when you think it is night time, it is just harder for you to see.

    Which is why much effort is being directed toward interconnecting disparate grids (and yes, interconnecting has its own downsides).

  6. Re:energy storage by epyT-R · · Score: 4, Insightful

    3. explain to taxpayers that solar energy is only available during the day and sunny days are more productive than cloudy ones. I realize most children innately understand this already, but politically brainwashed adults have lost their reasoning skills.