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More wind energy was installed in 2020 than any other energy source

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Re: More wind energy was installed in 2020 than any other energy source

#131
post #62

Earlier quoted context omitted.

I guess one solution is smart devices and processess that can be optimized to load whwn there is peak power. Some industrial processess, such as smelting, crushing, etc can be incentivized to do that. At domestic levels, its more difficult

One easy one is charging electric cars. If they can be plugged in both at work and at home, there's a huge opportunity to charge when there's excess production.

I can imagine settings where you can define when to charge e.g. "Charge to 20%, then only at peak excess energy times", like how people set the dryer to go overnight when there's excess energy

Re: More wind energy was installed in 2020 than any other energy source

#132

Earlier quoted context omitted.

The LCOE of unsubsidized newbuilt renewables are currently getting below the marginal cost of existing nuclear and fossil infrastructure. https://www.lazard.com/media/451446/grphx_lcoe-07-07.jpg From: https://www.lazard.com/perspective/levelized-cost-of-energy-...

This assumes that for some reason you don’t need electricity at night

It also assumes that your fossil power plants are free.

Re: More wind energy was installed in 2020 than any other energy source

#133
post #110
post #86

Earlier quoted context omitted.

> Personally, I hope that hydro pumped storage in artificial underground cavities will become mainstream one day. That would have massive (environmental and financial) costs. https://youtu.be/JSgd-QhLHRI Is a great video discussing the practicality and finances involved in hydro pumped storage.

Have you missed the underground part? Ideally both reservoirs would be kept underground, thus minimizing environmental impact and water loss to an absolute minimum. I agree that such storage would require huge CapEx, but on the bright side OpEx will be relatively small. And no need to bother with recycling of megatonnes of batteries every decade. Also because stored energy is proportional to volume and height differe…

> Have you missed the underground part? Ideally both reservoirs would be kept underground, thus minimizing environmental impact and water loss to an absolute minimum.

Nope, but you still need to dig a lot in rocks, and divert water to fill up the reservoir in the first place, which aren't without environmental consequences.

Furthermore, as the video i linked explains, you need very specific conditions for pumped up hydro to be viable (size, height, water, etc.) which IMHO makes it a non-starter in many places.

Re: More wind energy was installed in 2020 than any other energy source

#134
post #107

Earlier quoted context omitted.

In the US, there was more coal power generation in 2021 than 2020 because 2020 was an abormally low year of power consumption. If we skip over the pandemic, there was less electricty generated from coal in 2021 than 2019. Coal in the US has been in long-term decline since around 2008. Natural gas seems to be holding fairly stable at the moment. Depending on source, it looks like the US retired some 9 to 11 GW of coal…

China is producing all of the "super affordable" solar panels that everyone else are importing. All of that solar panel manufacturing requires coal.

Yes. Solving problems for the future generally requires using problematic systems that currently exist.

Re: More wind energy was installed in 2020 than any other energy source

#135
post #77

Earlier quoted context omitted.

> There’s currently no way to recycle or reuse the blades and it’s a big problem that nobody seems to care about The wind power industry cares and is actively asking for political incentives to change this: https://windeurope.org/newsroom/press-releases/wind-industry...

The industry needs political incentives to even exist and now they want incentives to fix the problem the incentives created. Why don’t we just agree on state financed and owned wind power and be done with it instead of feeding the middlemen. And it begs the question, the waste was a known factor before even starting building turbines, why start asking for this now instead of twenty years ago. To me it feels very muc…

Because markets carry useful signals. Part of the move to decarbonised energy is creating the free economic systems which support it.

Re: More wind energy was installed in 2020 than any other energy source

#136
post #121

Earlier quoted context omitted.

My problem is with the title by the hackernews poster. Highly misleading, as your quotes show.

You are right, the original article is: Land-Based Wind Market Report: 2021 Edition Released . PS: I am sorry, I was sure that HN policy is not to editorialize/change the title. I did not suspect this was done here.

> I was sure that HN policy is not to editorialize/change the title.

It is. I'm sure 'dang will fix it when he sees it :).

Re: More wind energy was installed in 2020 than any other energy source

#137

It's great......when the wind blows. In the UK we have about 15GW of installed wind generating capacity, but it's very rarely fully utilized. The variability means it's balanced out by other sources mostly gas powered Combined cycle turbines. During summer there have been weeks where wind and solar were negligible and gas was providing nearly 60% of the electricity generated. Nuclear is reliable, but we only have abo…

Sadly, the help is rather limited. All of Europe often shares the same environmental conditions. Energy storage is the only real solution.

I feel storage isnnever going to be cost effective, its cheaper to build 10x solar capacity you need and solve the peoblem that way

Re: More wind energy was installed in 2020 than any other energy source

#138
post #3

Best news is that cost of these installations is now quite low: less than $1.5 per watt peak. What about capacity utilisation factor of newly installed turbines? Does it trend downwards? Which means, are we close to exhausting potential of wind? PS: It's not, it's actually trending a bit up. Which is explainable because average capacity of a turbine trends up -> the turbine is bigger and taller -> wind blows faster a…

Does that figure factor in the eventual heavy cost of de-installation?

Why do you think there will ever a need for it? Just leave it where it is when it's no longer needed. Someone will eventually sell it for scrap metal making money on it.

Re: More wind energy was installed in 2020 than any other energy source

#139

False and misleading. First, it only refers to the US, while the headline makes no such qualification. Second, this refers only to electricity generation, which is roughly 25% of US energy use, or 20% if you include energy embedded in imports, mostly fueled by fossil fuels in China. Third, this refers only to gros capacity. For those who have been asleep, the effective energy capacity is far lower for renewables than…

>First, it only refers to the US, while the headline makes no such qualification. The url gives you a good hint.

> The url gives you a good hint.

True, but it is easily overlooked. A qualification in the title would be nice.

Re: More wind energy was installed in 2020 than any other energy source

#140
post #12

Earlier quoted context omitted.

The short answer scaling heavily favors huge turbines. The taller they are the larger swept area of the blades. More are more wind energy captured. (Good old area = distance squared) And higher up the more consistent the wind, higher the average wind speed, and thus higher capacity factor.

Recently read in an article about turbine scaling, that an 18% increase in blade length translates into 45% increase in power output. Scaling is extremely lucrative. And break even for these turbines is aroun 5 to 8 years, with active life of around 30.

It may have been from this (it says 45% more from a 19% increase): https://news.ycombinator.com/item?id=28273504
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