Tesla Powerwall - battery for your house

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Originally Posted by Eevo

until the price of solar comes down (and i hope it does)
and until solar is on every house, its not a nightmare yet.

most electricity production still goes to commercial and industry.
not to residential

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Solar panel costs have dropped faster than battery costs and most countries are now prioritising grid size solar installations. Viz the Nyngan solar farm put in by a major owner of Aussie coal fired plants. Smart people are way ahead of the die hards. New grid sized solar is now cheaper than new coal plants and will only get cheaper.

AGL - Nyngan Solar Plant

Floating solar plants are the new game, reducing evaporation on scarce water sources and increased efficiency. First floating plant in Aust has just opened in Jamestown SA. The rest of the world is going gang busters on this kind of technology.

Solar power plant floating on wastewater hailed for multiple environmental benefits - ABC News (Australian Broadcasting Corporation)

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Originally Posted by bee utey

Solar panel costs have dropped faster than battery costs and most countries are now prioritising grid size solar installations. [/url]

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im more talking about residential installs.

if we can replace (not just supplement ) coal with solar, it will be a great achievement.

The problem is, most people don't want to change their power usage habits.
My brothers house has been off the grid for 12 years now and is only a 3.5kw system, including a small wind generator. His batteries are only now starting to deteriorate (lead acid) and he sometimes has to use a small backup generator. But they live like they are using coin operated power points. They only switch things on as they are needed, switch things of when not. The only thing that's on permanently is the fridge. It's not for everyone admittedly.

Appliances are becoming less power hungry all the time, LED lighting, laptop computers, LCD/LED TV's etc. The greatest energy consumer now is probably aircon/heating.
We should be using less power than 10 years ago just due to advances in power management and design.

A 7kw system would suit 90% of people's homes if some thought was given to how power is being consumed.

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also depends upon location
tas no good for solar
even adelaide in winter

In assuming you are referring to the cold in winter or in Tassie? Solar panels are more efficient at lower temperatures, you get less output as the panel heats up. You get less daylight in winter though so you would need to take that into account.
Solar works fine in Tassie?

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Originally Posted by Rick122

In assuming you are referring to the cold in winter or in Tassie? Solar panels are more efficient at lower temperatures, you get less output as the panel heats up. You get less daylight in winter though so you would need to take that into account.
Solar works fine in Tassie?

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lack of sunshine.
need to build a bigger system which becomes cost prohibitive

Tesla announces electric energy for the home

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Originally Posted by Eevo

whats the cost on 15kW now days?
$10k?

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Double that figure!

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Originally Posted by tonic

I'm having serious thoughts about this Selectronic Australia Pty Ltd - True Sine Wave Inverters , although I think the battery technology may get there first, that is, before I go ahead with this style of system.

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Great bit of gear that one. I will be setting one of these up for a customer soon with lithium batteries.

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Originally Posted by Vern

Great bit of gear that one. I will be setting one of these up for a customer soon with lithium batteries.

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I was involved in designing a Selectronics system a while back, but the batteries they recommended weren't really top tier stuff. At the time I was trying to convince them to work out a program for Sonnenschein lithiums, but I left the company before it all got sorted. Just out of curiosity, which lithium cells are you using? (And do you know if Sonnenschein Lithiums are compatible yet?)