Electric cars

[Calvin8808]

36 minutes ago, inlinesix said:

Someone here said previously that Singapore always have excess capacity within our electricity grid

Yes it's true and that also contribute to the downfall of Hyflux.

[Volvobrick]

Australia is going to set up a solar farm and export the electricity to SG via underground cable. So technically our EVs will be solar powered! 

[Rm2s]

5 hours ago, Spidey10 said:

for sure they will think of something to - maybe something like electricity duties to offset the loss from fuel. Who knows a pop of charging could be in the region of a few hundred with taxes and duties for infra and electricity generation from fossil fuel...

imagine now you have 500 cars charging per night, and it jumps to 500,00 cars charging per night, what's the impact on the grid lines (sorry I noob on all this, not an engineer nor a scientist)

what read is fossil fuel is still being used to generate electricity (or is it not, in layman's terms) and the more consumption of electricity the more fossil fuel is needed. (actually if my understanding is correct, is it not a chicken and egg thingy...you cut the pollution at the end i.e cars with combustion engine, but the pollution is then generated at the front end where the fuel is used to generate electricity.,..so like lppl - as far as i understand)

back to the impact of 500,00 cars charging per night - what's the impact here? grid will be heavily used and more "fire" required to push to meet the 500,00 cars consumption...so how ah?

just thinking aloud.....and for sure, i believe the cost of electricity will go up! Is it more efficient than using fuel - i don't know... 

Usage of electricity comes in cycle everyday, the peak hours are during the day, in fact, peak starts at around 9 am, by 6 pm the demand for electricity dipped further. So for the scenario you are describing, charging cars at night will not be extra load for the grid or the power generation companies. In fact, the power generation companies will be more than happy to run a constant load (for day and night) to maximize their assets.

The power generators used in Singapore are well publicized to be the most efficient currently available. Each generator set last probably about 20-30 years and when they are due for upgrade, they will then use the most efficient model available at that time. It is far easier to control pollution at 10+ locations then to control it on 600,000 cars running on the road, further more, Singapore uses gas as main source of fuel to run the power generators, we have long phased out coal which arguably is the most "dirty" source of fuel for power generation. 

[Yewheng]

1 hour ago, inlinesix said:

Someone here said previously that Singapore always have excess capacity within our electricity grid

Yes, but then when say 60k cars charge together in high speed charge, by then will it still have excess capacity? Plus need to plan for worst case scenario..

 

It's easy to ramp up demand when there are a lot of spare capacity. It's almost impossible to do something in short run if capacity is a full load all the time and if there is sudden need of more electricity how? To build a additional power plant need time.. not say a few days months can settle.. so surely the planner will need to plan super ahead on what will be the charging speed be like in 2040, can the power grid able to take the extra load by then using the same capacity. If can't, them yeah got more then 10 yrs to built more power plant and etc ..

Edited February 24, 2021 by Yewheng

[inlinesix]

3 minutes ago, Yewheng said:

Yes, but then when say 60k cars charge together in high speed charge, by then will it still have excess capacity? Plus need to plan for worst case scenario..

See above post.

[Rm2s]

5 minutes ago, Yewheng said:

Yes, but then when say 60k cars charge together in high speed charge, by then will it still have excess capacity? Plus need to plan for worst case scenario..

Based on EMA report, Q1 2021, we have 12,582 MW generation capacity. The daily peak hardly hit 7,000MW. Plenty of spares.

[Lethalstrike]

1 hour ago, Volvobrick said:

Australia is going to set up a solar farm and export the electricity to SG via underground cable. So technically our EVs will be solar powered! 

I wonder what's the efficiency to pipe electricity all the way from Australia till SG 😅.

For sure it's going to the world's longest submarine power cable with length exceeding 4000km...

Edited February 24, 2021 by Lethalstrike

[Calvin8808]

9 minutes ago, Lethalstrike said:

I wonder what's the efficiency to pipe electricity all the way from Australia till SG 😅

Sounds so complicated ha ha 

[kelaihoyin]

On the topic of Grid. Not on the same scale as the US. But a predictable issue nevertheless that can be solved

 

[Volvobrick]

1 hour ago, Yewheng said:

Yes, but then when say 60k cars charge together in high speed charge, by then will it still have excess capacity? Plus need to plan for worst case scenario..

 

It's easy to ramp up demand when there are a lot of spare capacity. It's almost impossible to do something in short run if capacity is a full load all the time and if there is sudden need of more electricity how? To build a additional power plant need time.. not say a few days months can settle.. so surely the planner will need to plan super ahead on what will be the charging speed be like in 2040, can the power grid able to take the extra load by then using the same capacity. If can't, them yeah got more then 10 yrs to built more power plant and etc ..

Most cars will charge over night, when demands from industry, office, shopping malls are low. So swee swee balance out the demand.  High speed charging is bad for batteries, so most will avoid if possible.  ANd there won't be 60K high speed chargers. Not needed too, since 1 high speed charger probably can serves 10 cars a day (assuming 1-2 hrs each).  I am not worried about the power grid. I am more worried how the gahmen will screw the EV owners with higher road taxes when there are more EVs!

[Ct3833]

3 minutes ago, Volvobrick said:

Most cars will charge over night, when demands from industry, office, shopping malls are low. So swee swee balance out the demand.  High speed charging is bad for batteries, so most will avoid if possible.  ANd there won't be 60K high speed chargers. Not needed too, since 1 high speed charger probably can serves 10 cars a day (assuming 1-2 hrs each).  I am not worried about the power grid. I am more worried how the gahmen will screw the EV owners with higher road taxes when there are more EVs!

We just have to assume that the TCO of owning an EV will be the same as that of  a petrol car if not more . Government will have to ensure that the same amount of income from LTA, letting alone the YoY inflationary increase. 

[Lethalstrike]

10 minutes ago, Volvobrick said:

Most cars will charge over night, when demands from industry, office, shopping malls are low. So swee swee balance out the demand.  High speed charging is bad for batteries, so most will avoid if possible.  ANd there won't be 60K high speed chargers. Not needed too, since 1 high speed charger probably can serves 10 cars a day (assuming 1-2 hrs each).  I am not worried about the power grid. I am more worried how the gahmen will screw the EV owners with higher road taxes when there are more EVs!

Besides road tax, I can totally foresee a new COE structure for EVs, based on efficiency (kWh) and power output (KW) probably. They can continue to screw everyone for decades to come

[Didu]

No matter how you cut and dice it, owning a car in SG is still an expensive affair. 

[Karoon]

Dont charge at home. We are the rare asean country that charge private consumers higher than commercials/biz, whether for power or water or gas.

Charge in the office

[Calvin8808]

9 minutes ago, Karoon said:

Dont charge at home. We are the rare asean country that charge private consumers higher than commercials/biz, whether for power or water or gas.

Charge in the office

Commercial/Biz got bulk discount? Ha ha 🤣

[Karoon]

5 minutes ago, Calvin8808 said:

Commercial/Biz got bulk discount? Ha ha 🤣

How much your household tariff for your electricity.... $0.18 per kwh?

Check with your office... they probably paying 10 cents....

 

[Calvin8808]

4 minutes ago, Karoon said:

How much your household tariff for your electricity.... $0.18 per kwh?

Check with your office... they probably paying 10 cents....

 

Don't know actually I just look at the bottom line and pay.

Govt charge office cheaper cos they "buy" more electricity so give them bulk discount ha ha 

[Yewheng]

https://jalopnik.com/porsche-claims-its-synthetic-fuel-could-make-combustion-1846319665?utm_source=twitter&utm_medium=SocialMarketing&utm_campaign=dlvrit&utm_content=jalopnik

 

Another alternative synthetic fuel.. will it take off and replace petrol and diesel in future? If yes, it's a good news as for electric cars many people may find it a Chor to wait for more then 1hr just to charge up full and finding charging point available might also be a problem in future. Plus electric car might have lack of the enjoyment of the internal combustion engine reving sound, the feel, the turbo charge and etc.. so yeah..

 

 

Edited February 24, 2021 by Yewheng