[QUOTE=Ron Merritt;520257]I think all of you have missed the presentation. This device is basically for load shifting. Charge it when energy is cheap, use the power from it when energy is expensive. In many markets (but not all) the price of electricity varies by the time of day. That savings is how you get a payback on this device. The time periods are relatively short - so 4 or 5 hours use is all that is needed.
Not so sure that the particulars of the application it was designed to work for was actually missed by "all" of us. I suspect the trouble was some of us had trouble getting to a realistic affordable application of it - due to size, weight
220lbs and cost, in the relatively small fiberglass trailers most of us have and many learned long ago how to keep them completely off the grid.
The suggestion being made that we all needed to learn to save the planet and minimize our needs kind of sent the topic a little off track.
Funny enough just this morning our Canadian business paper The Globe and Mail had a story about the Telsa Powerwall
" Test units of the Powerwall will be installed in Canada later this year and commercial sales will begin early in 2016"
A couple of intreating items in the story where :
"The Powerwall, launched last week by Tesla chief executive officer Elon Musk, is designed to allow homeowners to store electricity generated by solar
panels during the day, then use it at other times when the sun is not shining but electricity consumption is higher."
"In Canada, however, that is not likely to be the main application."
"That’s because most solar electricity generated by Canadian homeowners’ rooftop panels is sold into the power grid through Ontario’s “feed-in tariff” system. There is no incentive to save the power for personal uses, because homeowners get high prices for the electricity they deliver."
"Critics have pointed out that the relatively low capacity of these batteries means that most households would not be able to store enough power to run all their lights
and appliances, unless they had several units in place. And there are competitive battery
systems, although they don’t have the modern look of the Tesla units."
Don't get me wrong I admire Tesla for their work in this regard but still feel its going to be sometime and with some modifications before it is something that homeowners here are going to embrace when one considers the capital cost associated with it and the fact it is not going to supply enough to power to your home - unless you buy a number of units or due to the solar power
buy back program found in most Provinces in Canada. Yes it could be used as a back up system for power outages - but suspect the average guy on the street would suggest a generater will do the same and cost far less.
I honestly think its going to take a long time and a great deal more modification in size and weight
before we see it replace the simple in expensive solar systems many here are using on our relatively small trailers currently to keep off the grid.