CATL Delivered China’s Largest 100 MWh Battery Energy Storage

FEB 8 2019 BY MARK KANE 19

CATL is now doing similarly big ESS projects as Tesla

Contemporary Amperex Technology Co. (CATL) launched in China‘s the largest energy storage system with capacity of 100 MWh, which will complement the world’s first multi-mixed energy power station, which combines into one unified system on the grid several renewable sources:

  • wind – 400 MW
  • photovoltaic – 200 MW
  • concentrated solar power – 50 MW

In terms of capacity, the energy storage system is not far from the world’s largest installation of 129 MWh/100 MW, delivered by Tesla in Australia.

The huge battery at the Luneng Haixi Multi-mixed Energy Demonstration Project in Golmud is required to withstand temperatures from -33.6 to 35.5 degrees Celsius over at least 15 years.

More about the system:

“The Station coordinates three different renewable, with fluctuating and particularly unstable, sources of energy and is required to respond consistently to fluctuating demand, making its batteries and battery management system crucial to the reliability of the system. CATL, the exclusive battery supplier for the Project, overcome the requirements during product design and development stage and took merely 17 days to test and commission the BESS to the grid.

Huang Shilin, Vice Chairman and Chief Strategy Officer of CATL, said, “The Station is the first of its kind – a multi-functional, centralized power plant integrated with an electrochemical energy storage system. Its technical reliability and affordability will promote further global deployment of different renewable energy applications.”

The first priority when building an energy storage station is safety. By selecting reliable materials, CATL minimize the possibility of failure incident and second damage explosion. CATL also follows the Potential Failure Mode and Effects Analysis(FMEA) design process to identify risks and execute risk mitigation plans in early stages of product development, manufacturing and management to ensure safe operation of the battery system with well-designed battery cell, module, cabinet and control system. Utilizing a three-layer relay protection system, CATL further assures performance of the battery system from damages caused by over-charging/discharging, over-current, mitigate over and under temperature working conditions.

One of the key challenges of safety and performances that CATL and the industry face is thermal management. The Station, installed at Golmud where temperature varies from -33.6 to 35.5 degrees Celsius. To ensure 15 years of battery performance, CATL has deployed a cooling system that uses air passages and air flow designs to maintain a consistent cabinet temperature. A battery management unit will kick-in the battery cooling system as soon as it detects thermo concerns, while pre-stored electricity protects the battery from capacity loss or lithium plating caused by charging in cold temperatures.

In addition, the Project has tough structural requirements, as Golmud lies in an active seismic zone, which calls for vibration and shock absorption. CATL’s state of the art Test & Validation Center carried out rigorous testing and simulation to prove its batteries are able to withstand a potential earthquake of magnitude 8.

According to Dr. Hui Dong, Chief Scientist of China Electric Power Research Institute, the Station is “the World’s first and China’s largest electromechanical energy storage station with virtual synchronous generator.” With the Station as an important part and an expected annual electricity generation amount of 126,250MWh (401,500 tons of coal generated energy), the Project is expected to be a good showcase of different new energy applications, thereby setting standards and smart grid applications around the world.”

Categories: China, ESS

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19 Comments on "CATL Delivered China’s Largest 100 MWh Battery Energy Storage"

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I know this is insideEVs not insideSTORAGE but can we get an article with some charts/graphs on storage deployment over the last few years and market share of who is doing what? It is obviously progressing rapidly. Alternately, I believe Elon Musk said in the Q3 results call from late last fall that Tesla was about done adding in 3 more lines at G1 to go from 10 to 13 and thus being able to roll out more Powerwalls. It sounds like the wait for Powerwalls has gone down, but is there any information on how long someone will wait if placing an order now? I think he said they are prioritizing those that are purchasing storage and home solar together. I can’t find any info on specifics of how all this is progressing though.

I’ve seen numbers for Australia, I’m sure you can find them.
I think there’s a good case for systems like this, not so much for home energy systems… but again in Australia there’s apparently a good business case for such systems.

I saw some numbers regarding Powerwall wait times recently (probably on Electrek?): while I don’t remember the specific figures, it was on the order of a couple of months… So not that bad at this point.

Note that on a recent earnings call (don’t remember whether it was the Q3 or the Q2 one), Elon claimed that while there was a temporary cell shortage in 2018, the real limiting factor for growth in the storage business is scaling up installation capability…

It is true Tesla’s 125 MWh is the most popular energy project in the world. But it is not the largest. The largest energy storage project is in South Korea built by Hyundia , which is about 150 MWh .

If we include molten salt and CAES (compressed air energy storage) there are even bigger systems – some with hundreds MWh.

If we include other storage technologies, pumped hydro wins hands down.

only for limited places. While pumped hydro can be bigger/cheaper, it really is limited in location.
OTOH, Molten salt is IDEAL to put in place of old coal plants. They can absorb excess energy from AE, and can be charged in the nighttime to allow for midi grids.

Molten salt storage for electricity is pretty inefficient, though…

(It is efficient for thermal storage, or in situations where you have to convert thermal energy to electric energy anyway — such as solar-thermal (CSP) power plants.)

The article is kinda unclear on whether that system is operational yet, or still being built…

More importantly, it claims a 150 MW power capacity (vs. 100 MW for Tesla’s South Australia one), but doesn’t say anything about the energy capacity. (129 MWh for South Australia.)

Also, the South Australian battery is claimed to be the biggest Li-Ion one — while according to some sources, there might be much larger flow batteries around… But I haven’t seen any consistent reports regarding what construction stage these are in, either.

This is a pretty impressive battery storage system. I especially liked that it included the expected annual amount electric generation 126,250 MWH (401,500 tons of coal generated energy)
Would definitely like to see more figures from other manufacturers like this.
Also would be great to see an EV say if you drive 12,000 miles a year it would be an estimated kwh of electricity which would be equal to a number of gallons of gasoline.

This I quiet impressive, I like the form factor, it looks like standard container size, you can ship everywhere, all you need is the foundation and cable infrastructure and it looks almost like “plug and play”

Perhaps Tesla could do the same?
Less time fitting out on site and as it is container sized, shipping worldwide is a doddle. These things can be moved to disaster areas pretty quickly and dropped onto the site by something like a Chinook or an existing truck.
There are already container sized Diesel Generators for use in Disaster areas. Put one of those with a few of these and you have a mobile power station that does not need to run the genny 24/7

Tesla has already announced their version and building them now.

Tesla is working on the Megapack.
As for dropping container sized battery packs. I doubt that will happen. When power goes out to communities it’s usually because of transformers or power lines going down.
The solution is Powerwalls in homes and Powwrpacks in businesses.
It’s surprising that Puerto Rico is going with natural gas and building LNG terminals to supply the Pureto Rico grid. With only 20% renewable by 2050. Currently only 2% is renewable. Looks like the Koch Brothers and this administration got there way. Definitely benefits the fossil fuel industry and harms consumers and the environment.

then you did not pay attention to PR.
The Grid is being broken into something like 9 ‘midi’ grids. Each of them will have a large battery. I suspect that something like the above would be IDEAL.
Then they are doing 3 LNG terminals, though I hope that is stopped. All that perry has to do is push for small nuclear power plants to be put in. In particular, the NuScale are IDEAL for there. Put 2 plants on the island, each with say 10 reactors, and you have 1.2 GW of power, along with cheap desalination of seawater.

From there, it would be trivial for the gov to require that all new car sales be electric.

The was the discussion early on about getting to 100% renewable energy. However Koch Brothers own the GOP and so it’s going to be 80% natural gas and there going to spend millions building a port for LNG ships.
Never hear of these cheap nuclear plants. They always call them cheap nuclear plants until they after they spend 5 years building one and are over budget by 10 billion.
You could build solar roofs and battery storage cheaper than any other energy and it’s the most resilient less power lines needed for Purteo Rico.
Also desalination isn’t cheap it requires huge amounts of electricity to push the water through the filters.

It seems the rumoured Megapack will do something along these lines…

Note though that Tesla has shipped some pre-assembled systems, consisting of Powerpacks and inverters mounted on a container-sized base plate, in the past — so it’s not an entirely new concept, either…

in fact, for a disaster, a single genny would be ideal to keep powering the battery, while the battery handles the variable load.

That seems to be what every single stationary storage system maker except Tesla is doing…

Note though that savings in installation are probably not actually that big, since you still need to lay the cables and pour the concrete — just bolting on a bunch of smaller Powerpacks instead of one larger container shouldn’t make that much of a difference…