Here you may engage in casual Chit-Chat on any subject that does not relate directly to motorhoming.
Forum rules: The usual standards of respect, decency and consideration for others are expected even though this forum will be less rigorously moderated.
 #152950  by Derb
 Thu Jul 11, 2019 9:19 am
Ummmm - because we don't have enough "cheap, renewable energy". It is a myth - plain and simple. I do this sh...t for a living. Short of going the Chinese way and "bugger the environment - we will dam up and use all of our rivers for Hydro" it will stay that way. Wind power is too fickle and like solar, needs to be used in conjunction with Hydro to work - the Hydro being used as an accumulator or battery for storage during periods of no wing or in darkness - work it out. The only time Hydro energy is cheap nowadays is during periods of "extreme weather events" when the water "has to be" passed down the rivers for flooding control. This drives down the spot-price of power as it is also usually accompanied by more moderate temperatures which lower the demand. You have to realize that the electrical generation industry is profit driven - the prices are manipulated by withholding generation offers of cheap power until the spot-price is driven up. This has the effect of pushing up our average annual cost per MWH and likewise our power bill. We do not have cheap power in NZ! Until cheap storage devices are available to the home consumer, solar will continue to be sold out the gate at less than the industry spot-price and we will continue to be screwed. The only way to beat the system is to buy smart appliances and cleverly use them to take best use of home-solar generation. It is called TOU or time of use. We should be able to get cheaper power overnight when the spot-prices are lower by using smart appliances and be rewarded by cheaper power bills but where is the profit in that? We have the ability to even control our dishwashers, clothes-dryers, washing machines, hot-water cylinders etc based on price-point usage via computers/internet etc driving our appliances but it will never happen - no money in that. solar at the moment is the only way we as a consumer can "stick it to the man" by more clever use of our home generation. Retired people are in a really good position to do this.
 #152957  by Mark
 Thu Jul 11, 2019 10:39 am
"Retired people are in a really good position to do this."
Except, as I and others have worked out, the pay-back time may not work for retirees. :?
 #152962  by petercw
 Thu Jul 11, 2019 2:47 pm
"We should be able to get cheaper power overnight when the spot-prices are lower"

Now that's the idea.. If we could "store" that power at overnight rates and use during our usage period then we might get better use out of the power block. That's something I would be kean on and as it's just a storage unit it's got to be cheaper than a whole solar system... Wouldn't it isn't it?
 #152969  by Derb
 Thu Jul 11, 2019 8:53 pm
and there you have it!!! a small bank of lithiums with the battery charger timed to come on in the wee hours of the morning and switching off by 0630 hrs. Then using an inverter off the battery bank to run your appliances during the day when prices are high. Cheap and cheerful. Job done. :TU
 #152970  by Nut17
 Thu Jul 11, 2019 9:02 pm
No Brian, you use a pump on night rates to fill a large pond then use a micro hydro scheme from the pond to provide power during the day. Stay away from those nasty chemical filled batteries that do not last very long. :) ;)
 #152990  by Nut17
 Fri Jul 12, 2019 9:01 pm
Well I'll be blowed :o I was only joking ;) But it is a reality. :TU
 #152996  by Derb
 Sat Jul 13, 2019 7:56 am
Yup - been around for a long time. Commonly used in conjunction with fossil or nuclear fueled power stations. Really only suitable for peak - load or short duration duty. Relatively low efficiency but able to make use of surplus power floating around the grid. Another form of “recharging a battery “. A few small, high-head hydros in NZ which could use this system with enough money thrown st them.
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