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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.

15 of 324 comments (clear)

  1. ca needs to stop subsidies on this by WindBourne · · Score: 1, Interesting

    Seriously, they should instead focus on subsidies for energy storage.
    As to solar, they should simply require that all new buildings of 5 stories and less, have enough on-site AE to equal or exceed the average monthly energy used of the HVAC.

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  2. Curious... by kenh · · Score: 5, Interesting

    ...on those 14 days in March, electricity customers paid exactly the same price for electricity as they did the other 17 days in March, so how did that help the consumers in California?

    Likewise, customers in the state that got 'free' electricity from California also paid exactly the same rate for electricity every day in March.

    So I ask, who benefitted from all that 'free' excess solar electricity? I can tell you who suffered because of all that 'free' excess solar electricity, every consumer of electricity in California, because the utility company is required, by law, to pay a premium price for every solar generated KWh fed into their grid, whether they need it or not, whether or not they can resell it.

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    1. Re: Curious... by Anonymous Coward · · Score: 2, Interesting

      That's been going on for decades. The Enron scandal involved the energy companies making the Californian senate panic into thinking energy prices were going to skyrocket and they had better sign a long term contract "freezing" prices to a fixed rate.

      https://en.wikipedia.org/wiki/California_electricity_crisis

      "Overscheduling is a term used in describing the manipulation of capacity available for the transportation of electricity along power lines. Power lines have a defined maximum load. Lines must be booked (or scheduled) in advance for transporting bought-and-sold quantities of electricity. "Overscheduling" means a deliberate reservation of more line usage than is actually required and can create the appearance that the power lines are congested. Overscheduling was one of the building blocks of a number of scams. For example, the Death Star group of scams played on the market rules which required the state to pay "congestion fees" to alleviate congestion on major power lines. "Congestion fees" were a variety of financial incentives aimed at ensuring power providers solved the congestion problem. But in the Death Star scenario, the congestion was entirely illusory and the congestion fees would therefore simply increase profits."

      For all of this market manipulation, I'm surprised Calfornia didn't unilaterally nuke Texas.

  3. Re:energy storage by ls671 · · Score: 3, Interesting

    Well, use batteries or flywheels but those lose energy with time.

    Or maybe, spend the electricity to pump water to a sealed tank in the mountains and let the water flow down later to power a turbine when you need electricity.

    There are many ways but none is perfect...

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  4. Re:So Make Hydrogen by FatdogHaiku · · Score: 4, Interesting

    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...

    Build some desalinizing plants and run them when there is too much available power. Getting some fresh water is better than giving away power, and they WILL need the desalinizing plants in the future in any case.

    As to making hydrogen, that would be more viable with a supply of distilled water, but still not a great plan unless you can use it without storing it... maybe make hybrid natural gas for consumer use, offset buying some of the natural gas now used.

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  5. Re:So Make Hydrogen by SuricouRaven · · Score: 5, Interesting

    Water, unlike electricity, can be stored. Quite easily. You just need a big hole.

    It's not that bad an idea. The plants are not labor-intensive, they are just capital-intensive - once the pumps and membranes are in they only need monitoring and occasional replacement, it's almost entirely automated. There's also a convenient correlation: The need for fresh water is greatest in summer when days are long, and especially when cloud cover is low. Exactly the conditions in which solar is most capable. It's also very easy to run the plant at reduced capacity - they are essentially just a simple low-capacity desalinator repeated thousands of times, and each one can be turned off individually on a time scale of seconds.

    Don't think of it as a plant running a tiny percentage of the time. Think of it as a plant running at 100% capacity in summer, 80% in spring and autumn and 60% in winter. With exceptions when the sun is good for a few hours to add more water to the tanks (which need not be valley-flooding reservoirs), so it can then be scaled back down again when the clouds return.

  6. Re:They don't want it I'll take it. by djinn6 · · Score: 3, Interesting

    A lot could be fixed if we just charged residents market rate instead of a fixed rate. This way people can buy smart appliances that take advantage of when the cost of electricity is low, and they can buy or repurpose old batteries to pick up cheap power and resell it when it's expensive.

    California is a huge state with an economy larger than that of France. You need 27 Nebraska's to make 1 California. But for all of that size, CA doesn't get any more negotiating power in the federal government. With 2 Californias, we get more representatives in congress and more electoral votes. Some of the stupidity could also go away, like declaring a drought when it's been raining for a month straight in NorCal.

    The only down side is that SoCal might join Mexico.

  7. Re:energy storage by unrtst · · Score: 4, Interesting

    Assuming there is an excess energy issue, desalinate (and maybe clean) the sea water first. That kills a second bird with the same stone. You still get to re-use some of that power later, and you get more clean drinking water in a drought ridden area. win/win?

    Look for anything that costs too much due to energy use to be feasible, and do it. Ex. Open a steel mill and only run it when power is dirt cheap or free.

    This is really a very very temporary problem. Giving away power for free will quickly find uses for it. Charge up cars during the day; put batteries or flywheels in each building to offset nightly usage; run CO2 sequestration services (CCS); turn waste into oil; run recycling plants; power a railgun to put stuff into orbit; etc.

    Going directly back to the water pumping example, it's used because it's easy and well understood, but you could lift anything up and let it fall back down. Ship rocks up the side of a mountain on a conveyor belt or mining carts or whatever, and let them generate power on their way back down at night.

    I suspect that the real truth is that it's not really excessive. There's a temporary imbalance, and they've found a sort of pressure relief. Later, they'll put that to use more effectively. Hopefully, no one builds a long term business around the prospect of this monetarily free energy.

  8. Re:So Make Hydrogen by FatdogHaiku · · Score: 4, Interesting

    Actually, I think one of the issues with melting polar ice is a decrease in salinity that slows the circulation of the oceans. It used to be that cold salty water dropped to the ocean floor at the poles and drove an underwater river that circled the globe, http://oceanservice.noaa.gov/facts/conveyor.html. That is now slowing, too much warmer fresh water from ice melting (no matter why). Less winter sea ice forming means less salt adding to the process.
    Also, people are actively harvesting sea salt today in California... not sure why... lot of algae from the looks of it.
    San Francisco Bay @ Coyote Creek... I don't think I want that on my salad...

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    You have the right to remain sentient. If you give up the right to remain sentient, you will be elected to public office
  9. Re:energy storage by thegarbz · · Score: 3, Interesting

    That kills a second bird with the same stone

    No. You aimed it in the right direction but the stone deflected off the first bird and left the second alone, and it turns out the first bird was stone resistant.
    Deslainating is incredibly energy intensive. You won't be desalinating water and then pumping it into storage only to later make electricity from it. You may as well just heat up some large resistor banks to burn off the power or shut down the solar panels. Also desal plants are expensive to make and are not suited to batch processes. So not only will the scheme not work, but you'll pay a lot of money to not see it work too.

    Look for anything that costs too much due to energy use to be feasible, and do it. Ex. Open a steel mill and only run it when power is dirt cheap or free.

    Oh my god NO!. That's far worse than the desal example. When power goes out at a steel mill it becomes a multi-million dollar event where you have the privilege of replacing a lot of damaged equipment. You can't batch run a steel mill. You can't even safely shut them down without doing any damage.

    Some of your latter examples make more sense. Especially the ones which deal with storage or one shot (pun intended) energy users.

  10. Re:energy storage by thegarbz · · Score: 5, Interesting

    Other than nuclear there are really no consistent sources of energy. We make them consistent due to engineering in of storage, feed surge and levelling, and careful planning ahead.

    Removing the engineered storage component of only solar is dishonest. Remind me again what the USA stores in fossil fuels to ensure stable supply in the market? 700million barrels of oil or something like that, not to mention the amount laying in tankfarms around the country. I know the local coal power plant has a quite small footprint compared to the mountain of coal reserves they have laying beside it to sure if there's a supply issue it won't affect operation. This is quite the opposite for solar where the battery storage system fits in a shipping container for a solar grid covering an entire football field.

  11. Re:worst idea going or useful way out? by Ken+McE · · Score: 3, Interesting

    Fuel Cells are just not cost effective at this time. According to NREL, they will be, around 2025. Until then, they are a joke.

    In regard to portable fuels cells, specifically cars, there is a problem that there are only 36 places in all of the continental US where you can tank up -

    (https://www.afdc.energy.gov/fuels/hydrogen_locations.html)

    Which makes it hard to sell a hydrogen car, because there is no demand and there is no demand because there are no stations, which both feed into slowing development of better cells, because there's no market.

    One way to punch out of this mess is for California to start making hydrogen, and give small hydrogen fueling pumps to any gas station that will take one, and now it becomes possible to sell cars, leading to a possible way forwards.

    I myself looked into buying the Honda Civic GX, a from-the-factory natural gas vehicle. The problem was that I could never go farther than half a tank from my house (where I would put in my own pump) because there was no place to reliably buy fuel.

    I realize that the technology is still limited, but CA. is spending money to give away power, why not do something useful at home with it? According to the comments above, there would be some use for a few combined desalination/electrolysis plants which would be able to make Hydrogen, Oxygen, potable water, and delicious algae rich salt as needed.

  12. Re:energy storage by apoc.famine · · Score: 3, Interesting

    I recently read about a cool inverted version of this. You put bigass balloons in the ocean down a hundred feet, and use the excess energy to inflate them. When you want your energy back, you are using the pressure from the water to drive the air out and run a turbine. I think it's in testing somewhere, Spain perhaps?

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  13. Re:energy storage by LesFerg · · Score: 3, Interesting
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    If I had a DeLorean... I would probably only drive it from time to time.
  14. Re:Storage is not the solution by GLMDesigns · · Score: 1, Interesting

    "The problem is that California exists in a capitalist economic system."

    Ha ha ha ha ha

    lol

    this is so foolish on so many levels.

    The key one is that even a completely communistic system NEEDS to have the information that is provided from purchases and sales. Von Mises wrote about this in the 1920s. The Soviets realized this as a key unsolvable problem in the 1970s and that was revealed after the collapse of the USSR in the 1990s

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