Climate Change and Renewable Energy News and Discussion

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dingyibvs

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tphuang said:
You are seriously going to use Tesla Powerpack to proof your point here? I love Tesla power pack. I'm probably going to buy one myself, but it's not cost efficient compared to other battery energy storage solutions. It sells well because of the coolness factor.

BYD's energy storage solutions will be a lot cheaper. I don't know if this will necessarily be as cheap as water tower, but there is no restrictions on where you can put them. Just look at how many they have sold. And the battery technology will continue to get cheaper in the future.

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I haven't looked enough into this flow batteries, but they will probably be cost competitive once the technology matures.

Here is the great thing. If water tank can solve most of the grid level energy storage problems, we will see that 10 to 20 years from now.
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My understanding is that flow batteries have fairly low power output. Perhaps they're more suited for augmenting baseload rather than used as peaker plants.

ficker22 said:
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Water and stuff
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I wonder if China is working on potential massive desalination projects. Freshwater that's not locked in the poles is so scarce, even an insignificant amount of desalinated seawater (relative to total seawater) can make a big difference.

AndrewS said:
China aims to start work on 270GW of pumped storage facilities by 2025

The chairman of the Power Construction Corporation of China (Power China) has said the country plans to begin work on more than 200 pumped hydro plants with a combined generating capacity of 270GW by 2025.
According to the Bloomberg news agency, Ding Yanzhang told the People’s Daily newspaper that the schemes would generate more than all the power stations in Japan. They would also raise China’s installed capacity by around 10% and increase the world’s energy storage capacity by around 170%.

If these schemes go ahead, they will mark a striking increase in what was proposed in China’s five-year plan for 2021-25. There it was envisaged that 62GW of pumped hydro would enter service and work would begin on 60GW more.

In January, the State Grid Corporation of China switched on the world’s largest pumped-hydro station in Hebei Province, the 3.6GW Fengning facility.

In February, Power China held the first meeting of its “supply chain assurance working group”, formed to support the ramping up of pumped storage schemes. The company notes on its website that the aim is to ensure new pumped storage projects have “safe, reliable, strong and efficient supply chains”.

Power China is a state-owned company made up of 779 subsidiaries, including well known companies such as SinoHydro. It is presently the fifth largest contractor in the world.

Pumped storage is a way of storing energy in its potential form. The idea is to pair it with wind or solar plants, and use their excess generation to pump water from a lower into a higher reservoir, creating a “water battery”.

According to the International Hydropower Association, pumped storage accounted for 158GW of storage in 2019, or 94% of world energy storage capacity. Recent studies by the association suggest there are more than 600,000 non-river sites that can be exploited in the future.

China is also progressing plans to deploy newer forms of energy storage such as lithium-ion batteries, with the country’s largest grid saying it hopes to have 100GW of such capacity available by 2030.

globalconstructionreview.com/china-aims-to-start-work-on-270gw-of-pumped-storage-facilities-by-2025/
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Good to see. I really think my idea of desalination + canals + pumped hydro can be a solution to two crises (water shortage and climate change) at once, and it can be applied globally. The technology probably needs to mature a bit more before such grand projects may be undertaken though.
 
tphuang

tphuang

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More on how much renewable energy has been increasing in China.
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Yet, despite China's emissions going down for 3 or 4 quarters in a row, you rarely hear about that in Western press. But you do hear stuff like this anytime they might use a little more coal temprorarily
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or gets complaints (this time from the Koreans) that they are taking over the entire supply chain.
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and of course when they do report lower emissions, it's because China is going into a recession.
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tphuang

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China has put the last Hongyanhe plant into commercial operation. This should be the last of the of the 2nd generation CPR-1000 type of reactors
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This is 2nd reactor that got connected to the grid this year. Expecting possibly 2 other reactors from Fangchenggang to get plugged into the grid this year. Both Hualong 1 reactors. From now on, it would seem to me that most of the reactors are Hualong One reactors.

Shilao's podcast had an interesting bit of China and nuclear power. They mentioned that China imported pretty much every type of reactors so they got a lot of experience in build nuclear plants. For the AP1000 project, the design itself reflected a lot of inexperience Westinghouse had with real world experience due to lack of new reactors on continental USA. So, Westinghouse also gained a lot from working with Chinese engineers in actually making their design work in reality. There were certain design decisions that were overly optimistic that Chinese engineers had to change because they did not work in actual construction.

I remember back 10 years ago, China had discussed building many AP1000 reactors. Despite getting their own IP on CAP1400, China has not decided to pick this design for most of the domestic projects or export project. This would indicate they think Hualong One is a better design than AP1000 or EPR from cost/performance point of view.
 
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pakje

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China basically got scammed on the AP-1000, it was a case of just believing western tech was superior nothing less. That being said they are building some CAP-1400s but I bet they've been heavily modified.

If you want to know why it's so dogshit listen to this podcast
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. It's for the american version which is slighty different to the chinese one.
 
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pakje said:
China basically got scammed on the AP-1000, it was a case of just believing western tech was superior nothing less. That being said they are building some CAP-1400s but I bet they've been heavily modified.

If you want to know why it's so dogshit listen to this podcast
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. It's for the american version which is slighty different to the chinese one.
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It remains to be seen how many cap1400 actually build. A while back, I saw a lot more planned cap1400. Now, most of them have been converted to hualong one. I think they will adopt hualong series as the de facto standard going forward with minimal mix of other designs backing things up. The volume production will allow them to significantly improve quality and cost.

One thing is for sure, all of this will be a significant help to their reactor technology and help them with military reactors.
 
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