- Joined
- 30 June 2008
- Posts
- 15,698
- Reactions
- 7,549
The second paper looked at how the battery freight trains could also be used to bring extra batteries in containers into emergency situations so that the train system played a vital role in resilience planning and in the grid integration to replace back up power and firming that is the basis for continued use of gas turbines.‘Our analysis provides initial evidence that—given near-future battery prices and access to wholesale electricity tariffs—retrofitting diesel-electric locomotives with battery-electric technology could save the US freight rail sector billions of dollars while yielding environmental, health and grid-resilience benefits’.
‘The potential to use the US rail system as a nationwide backup transmission grid over which containerized batteries, or rail-based mobile energy storage (RMES), are shared among regions to meet demand peaks, relieve transmission congestion and increase resilience.
We find that RMES is a feasible reliability solution for low-frequency, high-impact events and quantify its cost effectiveness relative to reliability-driven investments in transmission infrastructure and stationary capacity.
Not sure what happens over here but just cracked 44 deg. Solar panels on our roof certainly helps.Big Brother is watching your air conditioner.
Almost 170,000 air conditioners remotely turned down six times during blistering summer heat
Queensland’s state-owned power grid quietly forced almost 170,000 air-conditioners in homes and businesses into low-power mode six times over summer.www.abc.net.au
What's the backup?Getting into the weeds on how quickly solar power is taking over energy production.
Four charts on the unstoppable growth of solar – our best hope against climate change
To supply everyone with enough electricity to live a good life, we’ll need about 200 billion megawatt-hours per year. Assuming solar does the heavy lifting, is it possible?reneweconomy.com.au
Just installed AC off grid so on max during peak timeBig Brother is watching your air conditioner.
Almost 170,000 air conditioners remotely turned down six times during blistering summer heat
Queensland’s state-owned power grid quietly forced almost 170,000 air-conditioners in homes and businesses into low-power mode six times over summer.www.abc.net.au
A ton of batteries. Or pumped hydro. Clearly the solar element is only part of the picture.What's the backup?
For the record this is something being done by the network operator for whatever reason they're doing it. Whilst supply has been tight, it hasn't come to the point of AEMO ordering load shedding, at least not yet.Big Brother is watching your air conditioner.
Almost 170,000 air conditioners remotely turned down six times during blistering summer heat
Queensland’s state-owned power grid quietly forced almost 170,000 air-conditioners in homes and businesses into low-power mode six times over summer.www.abc.net.au
I would say it's mainly coal at the moment.A ton of batteries. Or pumped hydro. Clearly the solar element is only part of the picture.
The trouble with statements like this is they're a bit like saying that if I'm sitting on the floor right now, then I stand up, then I climb a ladder, then I get on the roof well I'm clearly going up and if we just extrapolate that then it'll take x period of time to get to the moon.Installed solar capacity will reach about 6 Terawatts in 2030, and thereby catch the combined generation capacity of coal, gas, hydro and nuclear. Solar is growing fast enough to decarbonise the global energy system before 2050, even for an all-electric energy system used by ten billion affluent people.
Yes in Qld behind the Mary valley near Imbil..big is a question of magnitudeI would say it's mainly coal at the moment.
Heard of any big pumped hydro stations on the horizon, apart from Snowy 2.0?
Plus the narrow view of a huge majority of population in urban environment and detached from any material production : food or goods.The trouble with statements like this is they're a bit like saying that if I'm sitting on the floor right now, then I stand up, then I climb a ladder, then I get on the roof well I'm clearly going up and if we just extrapolate that then it'll take x period of time to get to the moon.
The problem that engineers and others keep screaming about is with things that don't scale, things that work just fine until they run into an obstacle that we (society collectively) are thus far doing nothing to remove.
The big challenge isn't installing wind and solar, that's relatively easy, but rather it's with electrification and storage.
As a case in point, data for 2021-22 for the two states with the highest proportion of renewables in electricity supply:
SA:
Electricity = 65.4%
Total Energy = 16.0%
Tas:
Electricity = 90.6%
Total Energy = 45.8%
So why the huge difference in the % of renewables in total? What's Tasmania doing that SA isn't?
It comes down to something fundamental. Tasmania went "all in" on electricity right from the start versus SA where that's never happened even today. That's apparent everywhere from household water heating (electric in Tas, gas in SA) through water pumping on farms (electric in Tas, diesel in SA). And of course it manifests in per capita consumpton:
Tas = 22,794 kWh per capita per annum
SA = 8,971 kWh per capita per annum
Ultimately a renewable energy economy is an electric economy since the common aspect to the renewables is they produce electricity, they don't produce petrol, diesel, gas or solid fuels. They produce electricity and that being so, electricity is required to be the energy of choice at the point of use.
That's one of the "roadblocks" that need to be addressed but in practice aren't being, indeed to considerable extent we've gone in the opposite direction with the trend having been away from electricity for certain uses, most notably water heating and cooktops in the residential context.
So there's a disconnect with a simple explanation that both are right. Those pointing out that things are being built, more renewable energy is being used etc are factually correct. Those pointing out that there's a roadblock ahead that requires major work to overcome and which will stall progress if not overcome are also correct.
Where the trouble arises is the average person lacks sufficient knowledge of all this, indeed many seem confused to the point of thinking that "energy" and "electricity" are interchangeable terms, forgetting that for most of Australia electricity only comprises a minority of energy use - about 25% at the point of consumption nationally.
The approach in Tas is just run HV (11/22/33kV) distribution in rural areas, then install a transformer wherever something needs to be supplied.If you need to pump water from a bore or transfer water in the station maybe 10 times a year, are you going to setup a 5km power line per location or a solar panel station for each
Tasmania is small, and when where the lines installed ?The approach in Tas is just run HV (11/22/33kV) distribution in rural areas, then install a transformer wherever something needs to be supplied.
Typical roadside installation: https://www.google.com/maps/@-42.45...B6CFw!2e0!7i16384!8i8192?authuser=0&entry=ttu
The line's there for farming that's it really and there's nothing else on that transformer other than the pump next to it.
Obviously that's a lot easier in a physically small state than in the larger states, but still there's definitely some potential to increase farm electrification elsewhere.
No idea where the pump is for this one, but the meter will be in the box near the ground fed from the transformer on the pole:
Google Maps
Find local businesses, view maps and get driving directions in Google Maps.www.google.com
Some states there's a lot more reluctance to put supplies and meters in the middle of nowhere is the point and as a result the farmers end up using diesel even though there's an electricity supply not far away. To install a supply they want an address, a building basically, not just "in box on ground near pole 123456 beside road".
I'm not suggesting all pumping could be electrified, but there's certainly diesel being used at present that could be replaced quite easily. Less mucking about for the farmer too - pump just works, no need to mess about with fuel.
I'll argue that we really need to be looking at the cost of all this......where the lines installed getting a connection within less than a km from existing post is usually over $60k ..so no brainer.
Yes..but yesterday there was a new power post installed on the road to yandina from wappa damI'll argue that we really need to be looking at the cost of all this......
Of course it will be of no benefit to you, what do you think they are, benevolent institutions?Quick question. Wrong thread probably, but...
My energy retailer wants to change my hot water system from controlled load to time of use tariff.
Is this beneficial to me?
Thanks.
I was told that the water will heat when the power prices are lowest.Of course it will be of no benefit to you, what do you think they are, benevolent institutions?
Its to make more money for them.
Mick
@SirRumpole I think it would depend on the time of day you use itQuick question. Wrong thread probably, but...
My energy retailer wants to change my hot water system from controlled load to time of use tariff.
Is this beneficial to me?
Thanks.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?