Remove this Banner Ad

Play Nice Random Chat Thread V

🥰 Love BigFooty? Join now for free.

Status
Not open for further replies.
This is a really long post and as I'm currently camping I'm not in a position to do more than a quick scim read.

The argument you're making also made sense ten years ago. This following picture shows why it's fallen on its head.
View attachment 1021478

Yeah, there have been substantial improvements in the design of lot of renewable technologies and through subsidisation it has given them the opportunity to accelerate the benefit that comes from economies of scale. These LCOE values exclude subsidisation, however, subsidisation has still played a huge role in creating the demand and the investment that would have taken a long time without it.

If these things worked night and day it wouldn't even be a consideration. The problem is providing the power on demand, particularly at night.

This cost chart doesn't reflect variability, when you look at the German system their renewables often provides sufficient power, but when the conditions are far from ideal they do not generate enough from renewable energy. If you were to go total renewable, the system would need to be able to provide base load requirements in the worst of conditions.

Battery storage prices are following a similar trajectory as wind and solar PV, and will likely make sense economically on their own within 18-24 months.
I'm working for a company that builds and operates solar plants in Chile. We're looking at installing batteries at each of our plants. That solves all the baseload bs.

As far as nuclear goes, you can't build one these days without the government taking on all the risk. Private equity won't touch them because of the massive lead time (10-15 years from planning to operation compared to 18 months for renewables), it's more expensive per MWh produced, and you have waste to deal with.

Look at all the new nuclear projects in the last 20 years worldwide, half of them have gone bankrupt.

These renewable values are covered up by the fact there are fossil fuel providing the on demand load. In some places solar energy is about 20% of the output in winter, if you were to have no fossil fuel power then you would need significantly more power generation than what you would need on average, due to variability. You can overcome that with the use of solar batteries but according to one place which sells solar systems:

"Solar batteries range from $5,000 to $7,000+ and from $400 dollars per kilowatt hour (kWh) to $750/kWh. Note that these prices are only for the battery itself, not for the cost of installation or additional necessary equipment. The installed cost of a battery is closer to $11,000 to $18,000+, and $800/kWh to $1,300/kWh."

That would considerably inflate the cost of providing the energy on demand without any fossil fuel backup. The battery would also have to be replaced approximately every 15 years or so. This isn't a trivial cost applied to an entire population.
 

Log in to remove this Banner Ad

The germans have done some very smart and creative things to address load management to compliment renewables. One such example is the installation on a fleet of volkswagon auto engines modified to run on gas in domestic basements, these are grid controlled and the heat they generate is used for hydronic heating, collectively they can all be ramped up by the power grid to address fluctuatins. https://www.theguardian.com/environment/2014/jun/13/golf-vw-car-power-plant-germany
 
The germans have done some very smart and creative things to address load management to compliment renewables. One such example is the installation on a fleet of volkswagon auto engines modified to run on gas in domestic basements, these are grid controlled and the heat they generate is used for hydronic heating, collectively they can all be ramped up by the power grid to address fluctuatins. https://www.theguardian.com/environment/2014/jun/13/golf-vw-car-power-plant-germany
Its ironic ....

Bear with me. That is really cool and shows the intent to deal with AGW driven by CO2.

But even without CO2, economic growth causes global warming. Because of the waste heat... economic growth is somehow proportional to increases in energy use. The rate might fluctuate but by definition the bigger your economy the more work (in the physics sense, not more employment) being done, and so the more waste heat is being produced. While at some point this will begin to really matter, it probably doesn't now. That situation illustrates it perfectly, tho the benefits of heating in Germany outside of summer are also real, and at least its being efficient with that.
 
Yeah, there have been substantial improvements in the design of lot of renewable technologies and through subsidisation it has given them the opportunity to accelerate the benefit that comes from economies of scale. These LCOE values exclude subsidisation, however, subsidisation has still played a huge role in creating the demand and the investment that would have taken a long time without it.

If these things worked night and day it wouldn't even be a consideration. The problem is providing the power on demand, particularly at night.

This cost chart doesn't reflect variability, when you look at the German system their renewables often provides sufficient power, but when the conditions are far from ideal they do not generate enough from renewable energy. If you were to go total renewable, the system would need to be able to provide base load requirements in the worst of conditions.



These renewable values are covered up by the fact there are fossil fuel providing the on demand load. In some places solar energy is about 20% of the output in winter, if you were to have no fossil fuel power then you would need significantly more power generation than what you would need on average, due to variability. You can overcome that with the use of solar batteries but according to one place which sells solar systems:

"Solar batteries range from $5,000 to $7,000+ and from $400 dollars per kilowatt hour (kWh) to $750/kWh. Note that these prices are only for the battery itself, not for the cost of installation or additional necessary equipment. The installed cost of a battery is closer to $11,000 to $18,000+, and $800/kWh to $1,300/kWh."

That would considerably inflate the cost of providing the energy on demand without any fossil fuel backup. The battery would also have to be replaced approximately every 15 years or so. This isn't a trivial cost applied to an entire population.

Most technology requires subsidies to reach market. Fossil fuels still receive billions in subsidies.

You're right about intermittency of generation, and there are a couple of options here.
1) invest more in thermal solar (which provides 24 hour generation but hadn't yet had the investment to bring down costs)
Edit: note that this "expensive" tech is still cheaper than nuclear.
2) use storage. I mentioned batteries, but industrial batteries, not the residential prices you are quoting. Other forms of storage are pumped hydro. Even weights in mineshafts can be used to transfer power from generation time to demand time. Cheap storage is much closer to being widely economical than people believe.
 
Last edited:
Most technology requires subsidies to reach market. Fossil fuels still receive billions in subsidies.

Definitely. I don't think it is feasible for any major industry to get off the ground without substantial government investment, ie we would never have got the private investment to build the NBN, our telecommunication infrastructure crumbled under Telstra after it was privatised.

You're right about intermittency of generation, and there are a couple of options here.
1) invest more in thermal solar (which provides 24 hour generation but hadn't yet had the investment to bring down costs)
Edit: note that this "expensive" tech is still cheaper than nuclear.
2) use storage. I mentioned batteries, but industrial batteries, not the residential prices you are quoting. Other forms of storage are pumped hydro. Even weights in mineshafts can be used to transfer power from generation time to demand time. Cheap storage is much closer to being widely economical than people believe.

Yeah, I think the most realistic solution in terms of large-scale replacement of fossil fuel is pump hydro, one of the snowy hydro generators has pump capacity but it is a fairly small time operation.

While most of these tend to be on a relatively small scale, in terms of how large reservoirs are, I think if you were going to do it on scale that would replace fossil fuel power you would need to do it on a grand scale, particularly to utilise the enormous power generation potential of solar during summer to move and store enough water so you could rely on hydro a lot more during the cooler/overcast part of the year. You could then effectively store and then convert summer sunlight into winter electricity if you had a large enough reserve system.

You could build these along the coast and just store seawater so you wouldn't need to negatively impact the ecosystem or harm our fragile river system.

it would take a significant investment though and take a national investment effort similar to the NBN.
 
Definitely. I don't think it is feasible for any major industry to get off the ground without substantial government investment, ie we would never have got the private investment to build the NBN, our telecommunication infrastructure crumbled under Telstra after it was privatised.
It can feasabie but only where an entity is set up not solely for immediate profit. Elon musk and that other bloke (bezos?) who makes his money from amazon are examples of this with their space programs.

The state electricity of victorias charter was something like providing safe reliable afordable electricity to victorians. The current owners interests are to the shareholders and the board.
 
Definitely. I don't think it is feasible for any major industry to get off the ground without substantial government investment, ie we would never have got the private investment to build the NBN, our telecommunication infrastructure crumbled under Telstra after it was privatised.



Yeah, I think the most realistic solution in terms of large-scale replacement of fossil fuel is pump hydro, one of the snowy hydro generators has pump capacity but it is a fairly small time operation.

While most of these tend to be on a relatively small scale, in terms of how large reservoirs are, I think if you were going to do it on scale that would replace fossil fuel power you would need to do it on a grand scale, particularly to utilise the enormous power generation potential of solar during summer to move and store enough water so you could rely on hydro a lot more during the cooler/overcast part of the year. You could then effectively store and then convert summer sunlight into winter electricity if you had a large enough reserve system.

You could build these along the coast and just store seawater so you wouldn't need to negatively impact the ecosystem or harm our fragile river system.

it would take a significant investment though and take a national investment effort similar to the NBN.

Not similar to the NBN cos that was a crock...

How about similar to something that worked properly?
 

Remove this Banner Ad

It can feasabie but only where an entity is set up not solely for immediate profit. Elon musk and that other bloke (bezos?) who makes his money from amazon are examples of this with their space programs.

The state electricity of victorias charter was something like providing safe reliable afordable electricity to victorians. The current owners interests are to the shareholders and the board.

They both sunk in an amount of money that they were prepared/expecting to lose, our billionaires who got rich out of raping the country of natural resources aren't interested in doing anything to further the nation let alone mankind.
 

🥰 Love BigFooty? Join now for free.

Agreed. But its still their choice.

I agree. For whatever reason we lack the people who want to do things like that. I think if you made your money being innovative and creating something like Amazon and PayPal you probably have more vision than people who have just dug natural resources out of the ground and dodged paying tax as much as humanly possible.
 
Status
Not open for further replies.

Remove this Banner Ad

🥰 Love BigFooty? Join now for free.

Back
Top