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 Did TNB just screwed Solar users?

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Iceman74
post Aug 10 2023, 09:07 PM

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QUOTE(Boy96 @ Aug 10 2023, 12:39 PM)
Must be the fridge and coway machine then. Thats the only thing i know is running when everything else is switched off
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If this 2 items can use above 410 watts per hour (10kWh/24 hours = roughly 410watt )

You can throw away them… crazy figures
Roughly around 2 amps 24hours

This post has been edited by Iceman74: Aug 10 2023, 09:15 PM
Kytz
post Aug 10 2023, 09:12 PM

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QUOTE(daijoubu @ Aug 10 2023, 02:22 PM)
I understand the purpose of ICPT, and what I meant by financial benefit I meant that ICPT doesn't add or remove from TNB's profitability. It is a mechanism that means to pass back both cost or savings back to consumers in the event of fluctuating cost of generating electricity (which is highly affected by coal prices). Of course a large amount of subsidy is being paid by the gov especially in the earlier part of this year to sustain the rebate ICPT that domestic users are enjoying, and but I know it would have been worse had not commercial and industrial users been levied the RM0.2/kWh surcharge.

Anyway what I was disputing was mainly how the ICPT is used to achieve the gov's target subsidy intents, by using different ICPT surcharges on different categories of users however taking your hint and reading back I must admit I have mis-fired the wrong person doh.gif therefore I do apologise.
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Respect where its due, not many on the forum will apologise cheers.gif
Agreed with you on your ICPT explanation.
Hope more people understand why they are charged ICPT for consuming the kWh from TNB grid eventhough their solar excess gives them rebates.
TSBoy96
post Aug 10 2023, 09:39 PM

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QUOTE(Iceman74 @ Aug 10 2023, 09:07 PM)
If this 2 items can use above 410 watts per hour (10kWh/24 hours = roughly 410watt )

You can throw away them… crazy figures
Roughly around 2 amps 24hours
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Got full home security system and cctv monitoring at each corner as well so that also counts maybe
mars2003
post Aug 10 2023, 11:30 PM

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ev main purpose is not I repeat not to make it more environmental better. its just serve as an alternative to fossil fuel .
our world current way of producing electricity is still harmful to the environment.
unless only renewable energy such as solar panels is massy adopted.
and thirdly I see those ppl installing solar in their house and talks about money save or money earn ( if can ) its just running round and round 10 year cycle period.
all also talked roi here and there but after 10 years. they repeat the same thing. that is invest again in whatever form and wait another 10 years.
ar188
post Aug 10 2023, 11:46 PM

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QUOTE(Boy96 @ Aug 9 2023, 04:46 PM)

Tnb just flat out charge additional 10 cents/kWh for the total energy usage instead of just anything above the 1500kWh use

so its simple. if use >1500kwh of grid power then kena charge lo.

if u got solar and u export it, they pay u for what u export.

maybe daytime export solar. (everyone go to work, fridge/internet/cctv , background devices running only, solar panels produce more than u use, net positive send back to tnb grid, so they pay based on agreed rate)

night time their house suck tnb grid power like crazy. (charge 2 ev and 4 aircons etc) end up using over 1500kwh of grid power. so kena penalty!

This post has been edited by ar188: Aug 10 2023, 11:47 PM
XP750
post Aug 10 2023, 11:52 PM

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QUOTE(Boy96 @ Aug 10 2023, 09:39 PM)
Got full home security system and cctv monitoring at each corner as well so that also counts maybe
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nah cctv cant suck much electricity, by that amount is either heating or cooling which can use such huge numbers,

better get a wattmeter and start your electricity audit yo, who knows might be neighbor stealing, happened so many times
mushigen
post Aug 10 2023, 11:52 PM

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QUOTE(mars2003 @ Aug 10 2023, 11:30 PM)
ev main purpose is not I repeat not to make it more environmental  better. its just serve as an alternative to fossil fuel .
our world current way of producing electricity is still harmful to the environment.
unless only renewable energy such  as solar panels  is massy adopted.
and thirdly I see those ppl installing solar in their house and talks about money save or money earn ( if can ) its just running round and round 10 year cycle period.
all also talked roi here and there but after 10 years. they repeat the same thing. that is invest again in whatever form and wait another 10 years.
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If your reason for saying ev is not environmentally good is due to batteries, I can still agree.
But if you say it's because of "dirty electricity", I have to disagree.

Our power plants are more efficient than an ICE car can ever be. It means, less wastage of energy from power plant compared to ICE cars. Power plants recover the heat from flue gas by having a waste heat boiler/recovery/heater, whereas in cars you actually need to spend energy (radiator fan) to remove excess heat from engine.

Let's not mention how ICE cars require petrol and diesel - something that requires energy to produce.
Also, fuels need to be distributed to petrol stations around the country by road tankers, further consuming energy.
Eulm585
post Aug 11 2023, 12:04 AM

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QUOTE(mushigen @ Aug 10 2023, 11:52 PM)
If your reason for saying ev is not environmentally good is due to batteries, I can still agree.
But if you say it's because of "dirty electricity", I have to disagree.

Our power plants are more efficient than an ICE car can ever be. It means, less wastage of energy from power plant compared to ICE cars. Power plants recover the heat from flue gas by having a waste heat boiler/recovery/heater, whereas in cars you actually need to spend energy (radiator fan) to remove excess heat from engine.

Let's not mention how ICE cars require petrol and diesel - something that requires energy to produce.
Also, fuels need to be distributed to petrol stations around the country by road tankers, further consuming energy.
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But have you taken into account the opportunity cost for ev charging at petrol station?

For petrol it takes 2 minutes to pump full tank which will earn petrol station maybe rm 3
But for EV need to charge 20-40minutes to full charge which earn rm 5

With 5 ev pumps and 5 petrol pumps, within an hour
5 petrol pumps will earn 3*30*5 = 450rm
5 ev pumps will earn 5*2*5 = rm 50

So per month
Petrol pumps will be 450*30 = 13500
Ev pumps will be 1500…

So unless something changes, no real reason for ev adaptation unless they can profit more from electricity.

TSBoy96
post Aug 11 2023, 02:10 AM

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QUOTE(XP750 @ Aug 10 2023, 11:52 PM)
nah cctv cant suck much electricity, by that amount is either heating or cooling which can use such huge numbers,

better get a wattmeter and start your electricity audit yo, who knows might be neighbor stealing, happened so many times
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Yikes. Thats gonna be big project to pinpoint to where is the energy going to
KarchKiraly
post Aug 11 2023, 05:12 AM

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To screw back tnb, need to promote off grid electricity for all new houses. Add into cost of new house a 10 kW solar panel, 15 kWh battery pack and a backup 2kW biodiesel generator that can run using waste cooking oil. Should be enough for a typical house using 1500 kWh of electricity per month. Not sure about the cost and roi, just wanna screw tnb.
KarchKiraly
post Aug 11 2023, 05:21 AM

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QUOTE(mushigen @ Aug 10 2023, 11:52 PM)
If your reason for saying ev is not environmentally good is due to batteries, I can still agree.
But if you say it's because of "dirty electricity", I have to disagree.

Our power plants are more efficient than an ICE car can ever be. It means, less wastage of energy from power plant compared to ICE cars. Power plants recover the heat from flue gas by having a waste heat boiler/recovery/heater, whereas in cars you actually need to spend energy (radiator fan) to remove excess heat from engine.

Let's not mention how ICE cars require petrol and diesel - something that requires energy to produce.
Also, fuels need to be distributed to petrol stations around the country by road tankers, further consuming energy.
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Only way to make ice car more carbon neutral is by using 100% biofuel. The trees absorb co2 and biofuel create co2 from combustion in the ice.

There are ways to recover low grade heat from the ice car, but it will the car bulky or more expensive. Maybe ammonia based gas power cycle plus thermoelectric chips down the line.
SUSCurrent Events guy
post Aug 11 2023, 05:42 AM

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Thanks to TS for opening this discussion and the posters on the first 2 pages for their discourse, I think I understand how TNB calculates this and have an idea on why it is done this way.

It seems to me that there is still ROI in solar installation however people need to understand that using solar that is tied to TNB grid does not mean they can use more electricity freely where the cap is 1500kWh. On one side I like how this causes us to be green and think about what our big energy expenditures are like AC. On the other side it does feel like a detriment to going green by using EV. I suppose the purpose cant be any clearer, I am charged more when I use more electricity because the grid needs to cater to my usage and TNB needs to invest to handle that load, regardless of how much I return to the grid.
Dothan
post Aug 11 2023, 06:31 AM

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QUOTE(mushigen @ Aug 10 2023, 11:52 PM)
If your reason for saying ev is not environmentally good is due to batteries, I can still agree.
But if you say it's because of "dirty electricity", I have to disagree.

Our power plants are more efficient than an ICE car can ever be. It means, less wastage of energy from power plant compared to ICE cars. Power plants recover the heat from flue gas by having a waste heat boiler/recovery/heater, whereas in cars you actually need to spend energy (radiator fan) to remove excess heat from engine.

Let's not mention how ICE cars require petrol and diesel - something that requires energy to produce.
Also, fuels need to be distributed to petrol stations around the country by road tankers, further consuming energy.
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If you are a science student, you should understand why our electricity tranmisssion/conversion are inefficient and thus dirty if our power generation is relying on gas and oil.
mushigen
post Aug 11 2023, 08:43 AM

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QUOTE(Dothan @ Aug 11 2023, 06:31 AM)
If you are a science student, you should understand why our electricity tranmisssion/conversion are inefficient and thus dirty if our power generation is relying on gas and oil.
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Could you do this non-science student a favour by explaining why electricity transmission is more dirty than hydrocarbon fuel distribution from refinery to individual petrol stations using road tankers?
mushigen
post Aug 11 2023, 08:53 AM

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QUOTE(KarchKiraly @ Aug 11 2023, 05:21 AM)
Only way to make ice car more carbon neutral is by using 100% biofuel. The trees absorb co2 and biofuel create co2 from combustion in the ice.

There are ways to recover low grade heat from the ice car, but it will the car bulky or more expensive. Maybe ammonia based gas power cycle plus thermoelectric chips down the line.
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Possible, but I think it also depends on how the biofuel raw materials are sourced. If forests are cleared to plant crops like corns etc to produce biofuels, its environmental impacts may not be better than the impact from using fossil fuels.

As for the ways to minimize energy wastage in ICE cars, I think nobody will invest anything for it as 20 years from now many countries will outlaw the sale of new ICE cars.
Silfer
post Aug 11 2023, 09:13 AM

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QUOTE(Kiding @ Aug 10 2023, 02:02 PM)
Sarawak doesn’t have TNB, Sarawak electricity provider is Sarawak Energy, and the highest tariff is 31.5cents per kWh
Sarawak has excessive energy produced, Sarawak government plan to use those excess hydropower energy to produce hydrogen
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excessive until want to sell to SG.
Dothan
post Aug 11 2023, 10:46 AM

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QUOTE(mushigen @ Aug 11 2023, 08:43 AM)
Could you do this non-science student a favour by explaining why electricity transmission is more dirty than hydrocarbon fuel distribution from refinery to individual petrol stations using road tankers?
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I am not saying more dirty. Please don't quote me wrong. There is no need to compare which one dirtier as both are dirt in different ways.

Back to my original point: There are a lot of energy loss using grid electricity. Along the transmission lines, the voltage transformation between power plant and power distribution hub and even to your house, and also AC to DC transformation at household power adapters, even charging your EV also has energy loss as heat.

To me, EV is just a hyppie and trendy stuffs. You want clean energy, it should be hydrogen fuel cell or hydrogen ICE where hydrogen is generated using solar energy or hydroelectric.

This post has been edited by Dothan: Aug 11 2023, 10:47 AM
mushigen
post Aug 11 2023, 11:13 AM

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QUOTE(Dothan @ Aug 11 2023, 10:46 AM)
I am not saying more dirty. Please don't quote me wrong. There is no need to compare which one dirtier as both are dirt in different ways.

Back to my original point: There are a lot of energy loss using grid electricity. Along the transmission lines, the voltage transformation between power plant and power distribution hub and even to your house, and also AC to DC transformation at household power adapters, even charging your EV also has energy loss as heat.

To me, EV is just a hyppie and trendy stuffs. You want clean energy, it should be hydrogen fuel cell or hydrogen ICE where hydrogen is generated using solar energy or hydroelectric.
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Why cannot compare, since I was comparing the environmental impact of ICE vs EV in terms of carbon footprint?

The question is, battery impact on environment aside, are EVs cleaner than ICE ? Keyword is cleaner, not clean.
SUSRorschach85
post Aug 11 2023, 12:42 PM

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QUOTE(funnyTONE @ Aug 10 2023, 09:05 AM)
Lol laugh.gif
He is a penny pincher type of person.
Either a bungalow or semi-D size house.
Several kids including teens, so you have 10+ gadgets in the house and one or two gaming PC. Mom's a kitchen dweller, constantly cooking and baking. Lots of clothes to wash including dryer. Bonus if they have water pumps for their water tank, aquarium, or water feature landscapes and bonus if they have a swimming pool.

All rooms fully aircond plus living room. Easily can hit 1k+ bill.
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Thats not yet reach T20 level yet.
spacelion
post Aug 11 2023, 12:48 PM

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So need to have two grid in house now huhu

One connected to TNB grid and the other to solar grid

Then just have some breaker in case u need to share grid

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