Climate Change and Renewable Energy News and Discussion

AndrewS

Brigadier
Registered Member
okay, I wrote about the usage of BESS and EVs in solving the problem of intermittency in renewable power generation in this substack entry.

Please, Log in or Register to view URLs content!

Electricity demand is going to increase everywhere if cars switch from hydrocarbons to being powered by electricity.
It could be 2x today's level in some already developed countries

I thought the benchmark electricity price in China (which is set by Coal) is still at $5/MWh?

Also, BESS costs are really dependent on the upfront installation cost versus the number of times it is cycled.
In comparison, a coal thermal plant has low upfront costs and high ongoing fuel costs.

So if you start using BESS systems as intermittency backups instead of coal, BESS costs will start ballooning worse than for backup coal plants.

---

Also, this article below says hydro is still costs significantly less than BESS? And it's based on 1 cycle per day
It's also listing hydro with a 77% round trip energy efficiency. I recall seeing 70% being quoted in other places previously.

Please, Log in or Register to view URLs content!
 

tphuang

Lieutenant General
Staff member
Super Moderator
VIP Professional
Registered Member
Electricity demand is going to increase everywhere if cars switch from hydrocarbons to being powered by electricity.
It could be 2x today's level in some already developed countries

I thought the benchmark electricity price in China (which is set by Coal) is still at $5/MWh?

Also, BESS costs are really dependent on the upfront installation cost versus the number of times it is cycled.
In comparison, a coal thermal plant has low upfront costs and high ongoing fuel costs.

So if you start using BESS systems as intermittency backups instead of coal, BESS costs will start ballooning worse than for backup coal plants.

---

Also, this article below says hydro is still costs significantly less than BESS? And it's based on 1 cycle per day
It's also listing hydro with a 77% round trip energy efficiency. I recall seeing 70% being quoted in other places previously.

Please, Log in or Register to view URLs content!
I don't know what you are talking about. Did you read what I wrote in there?

the backup thermal plants they have in every city in China is really expensive. You need BESS to replace them.

Solar and wind production is essentially free in China. How can coal electricity price possibly be at $5/MWh when the average industrial electricity price in China is $40/MWh and coal is the main supply for that?
 

tphuang

Lieutenant General
Staff member
Super Moderator
VIP Professional
Registered Member
by the way on energy demand, the grid does have to increase in different ways to accommodate super chargers that's going to start appearing in those highway charge stations. We are going from 100kW to 400kW chargers, so the grid needs to be updated to accommodate that. However, the power demand for even 100 super chargers is nothing compared to all the aluminum plants they have around China.

If there is one thing China is good at, that will be to produce energy cheaply and deliver it to places that need it.
 

tphuang

Lieutenant General
Staff member
Super Moderator
VIP Professional
Registered Member
Huawei's liquid cooled super chargers are expanding significantly over this year and many public chargers over the next year will go from 100kW to 400kW+. This will require grid system upgrade, but will allow significant improvement in energy utilization and storage and such.

 

tphuang

Lieutenant General
Staff member
Super Moderator
VIP Professional
Registered Member

Largest ever airport installation of solar panel in ChongQing, 30MW for 24GWh of power a year. pretty low utilization tbh, but does supply 10% of airport power demand and further helps reduce stress on the grid. Again, we need more smart grid, more storage and more distributed power.
 
Top