What happens when solar power is cheaper than grid power?

because people are implementing alleged CO2 reducing

Wow!!! That's the closest thing to a love-letter to Sylvia that Phil has ever posted!!!!

Reply to
Yaputya
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It's not really very efficient, even if they were available. Unless all of your roof is facing North and unobstructed by adjacent buildings of shading from trees. This is very rare. I looked at this option During the design of my current house and decided it was not cost effective, despite half the roof facing North. A low thermal inertia roof skin with hot water and PV panels mounted at the most effective places is a better option.

Reply to
swanny

It would be interesting to know what the cost per kWh would be over the lifetime of the average PV system, amortising capital cost and eventual disposal costs into the price. Then compare that to the average grid feed price per kWh.

Reply to
swanny

That is what we are trying to educate Herc about.

Reply to
terryc

Well that's a bit different. If it can be made to work (economically!) and provided the stuff stays where it's been put, and doesn't escape causing mass fatalites, then it will reduce the CO2 output to the atmosphere.

That's not the same as a technology that looks as if it should work, but doesn't, when all the ramifications of using it are taken into account.

Sylvia.

Reply to
Sylvia Else

LMAO

Reply to
kreed

**Thinking outside the box over the weekend. Let's say you plonk a dirty great PV array on your roof in a year or two. Then you buy yourself a Holden Volt. During the day, you plug your Volt into the power supplied by the PV array. Given the fact that you are (in theory) a typical Australian driver, your driving is limited to around 40km/day. That suggests you will never use anything but renewable energy to power your car. That would result in a useful reduction in CO2 emissions. If several million car owners did the same thing, the results would be significant.
--
Trevor Wilson www.rageaudio.com.au
Reply to
Trevor Wilson

w
r
e
,

you can put your 2 electrodes into rainwater and fill your own hydrogen tanks.

very efficient too!

now THAT is how you store the solar power station energy for 18 hours each night and run hydrogen plants overnight.

no batteries - 100% solar. cloud proof.

***

My dads's idea was to have nuclear reactors in the desert and cart hydrogen in trucks to the capital cities, or a pipeline.

just have massive solar stations out of town and use hydrogen "batteries". fuels the cars while you're at it.

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Herc

Reply to
Graham Cooper

You just need better insulation.

In winter I get 8-9 days with ice in my esky by putting it inside a $20 plastic crate on a foam mat.

Peltier coolers are pretty good, the lowest 12V compressor fridge takes 2AM continuous.

You can cool quickly with a peltier with 5amp-10amp then reduce it to 1amp or so for continuous use or use a thermostat.

The 12V peltier eskies are so bad they never bothered to install thermostats.

I'm making a cool room with conventional electric oil heaters in them working in reverse, having a cooling element on the top of the radiator that cycles the cold water inside the radiator, absorbing heat in the room and fanning it outside via the peltier heat pump

*
  • WALL
*
  • || |=3D=3D=3D|
  • | | | cool room with peltier radiator (heater filled with water)
  • |=3D=3D=3D|
  • ^ ^ =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

power up a peltier device and touch it! they are instantly cold as the inside of your freezer!

Herc

Reply to
Graham Cooper

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Reply to
Graham Cooper

**No, it is not. Around 30% efficient, in fact.

**Yes, it is, but there are better ways.

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--
Trevor Wilson www.rageaudio.com.au
Reply to
Trevor Wilson

Sylvia gave a figure of 90% last year or around there.

The car battery is going to cost you more than petrol

Nope! Not unless you use thermal energy and masses and masses of pissy thermal generators.

Hydrogen is how it's all done.

SOLAR >> ELECTRICITY >> HYDROGEN >> GENERATOR >> ELECTRICITY V V V V ELECTRICITY HYDROGEN >> CARS

Herc

Reply to
Graham Cooper

**The 90% figure may be the theoretical figure. The actual figure is far lower.
**Duh. Fortunately, the battery can be recharged many times, with the 'free' energy provided by PV cells.
**Not yet. The conversion efficiency is (presently) far too low.
--
Trevor Wilson www.rageaudio.com.au
Reply to
Trevor Wilson

You're reverse engineering your arguments with zero facts to fit the current climate.

I agree if you have a low KM range the current technology might provide a mediocre cost benefit charging your own $10,000 battery way under full capacity.

The hybrid cars are PR stunt. Dumb idea having 2 engines!

Remember when the concept was out they would run off braking power from Brisbane to Perth and back on 1 tank!

Herc

Reply to
Graham Cooper

Yes but when you are trying to cool/heat a room you will soon realise that the power required to do so using Peltier cooling (not to mention the costs) will throw your cost effective solar powering ideas into a festering heap.

But you won't listen to reason, so good luck with it. I would like to see what you come up with though.

Reply to
Clocky

Not really, remember that producing a new Volt and the solar array required to power it would produce more CO2 than driving a $500 20 year old Commodore (for instance) for the life of the Volt and the solar array.

Reply to
Clocky

You obviously don't know how much power and how slow the process is to get the hydrogen using electricity.

Impractical, inefficient and not even remotely cost effective - or environmentally friendly.

There is no free lunch.

Reply to
Clocky

**Interesting. Of course you have some data to back that claim?
--
Trevor Wilson www.rageaudio.com.au
Reply to
Trevor Wilson

t

Honda HOME Refuelling Station

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Electrolysis is very efficient.

You put 2 electrodes in distilled water.

RAINWATER WILL WORK!

add a pinch of salt for catalyst!

you get Hydrogen bubbles on one wire and Oxygen on the other!

H2 is the perfect 100% no losses, works forever, from water, BATTERY!

IN scuba sized Tanks!

Herc

Reply to
Graham Cooper

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The electrical power required to generate the hydrogen is greater than the amount of hydrogen produced. It's not efficient. And it's slow, so very slow.

It would take years to produce enough hydrogen to run a hydrogen car for one day using a 12V battery!

Reply to
Clocky

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