Seeking Alpha
View as an RSS Feed

Cassina Tarsia  

View Cassina Tarsia's Comments BY TICKER:
Latest  |  Highest rated
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    cparmerlee ...
    Thank you so much for you kind explanation about your asking for the numbers ... it makes real sense to me ... and thank also you for your consideration.

    By the way I left another comment for Davewmart - should have included you there, too - with the number for my solar energy production that give the exact figures which I hope will fill in the blanks which you may need for your calculations.
    May 4, 2015. 12:50 PM | 1 Like Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    Davewmart ...
    Here are the numbers produced by my solar panels (through Enphase) that show the exact amount of energy that my 39 solar panels produced during the last six month period ... as you can see it will be a lot more generation leading into the summer months. These numbers should make it easy to interpret and calculate all the various amounts of energy and costs that you are looking for. And by the way, the Tesla battery is only hooked up to half of my solar panels - about 20 of them, the ones that are always in the sun - since that is all it needs. Something to keep in mind as far as costs are concerned.

    October 2014 Total --- 964 kWh
    November 2014 Total --- 726 kWh
    December 2014 Total --- 515 kWh
    January 2015 Total --- 616 kWh (January 2014 Total --- 813 kWh)
    February 2015 Total --- 828 kWh
    March 2015 total --- 1.16 MWh
    April 2015 Total -– 1.21 MWh

    One last thing as far as solar panels and the Tesla battery are concerned ... I look at the solar panels as an investment much like I would an investment in the stock market ... they both can bring returns and dividends ... except the solar panels will give constant dividends along with a certain increase in the value of your home if you would ever sell it. The Tesla Battery is like an insurance policy much like you would have with your car or your home, and it will give you a peace of mind that even a gas generator couldn't give since the battery requires no maintenance and is always there in case of a disaster or main power grid outage. And it, too, will increase the value of your home. Something to think about ...
    May 4, 2015. 12:20 PM | 3 Likes Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    Davewmart and cparmerlee ...
    I just looked at my bill and found that I had made a silly mistake with my numbers ... the 451.26 was the total additional credits for year (2015) that I have accumulated thus far. Last month it was -31.14. It seemed too high but I guess that I just don't work with numbers well so I just let it pass.

    I have the numbers for some months but I don't really understand what they mean ... if I could copy and paste I would but they are PDF copies so it won't work. Anyway, here is what I have if you can make sense of it ...

    (31)October 14 - Total kWh used - -352 Daily average kWh - -11.4
    (30)November 14 - Total kWh used - 13 Daily average kWh - .4
    (31)December 14 - Total kWh used - 294 Daily average kWh - 8.9
    (32)January 14 (2014)-Total kWh used- 382 Daily average kWh - 12.3
    (30)February 15 - Total kWh used - -77 Daily average kWh - -2.6
    (31)March 15 - Total kWh used - -416 Daily average kWh - -13.4
    (31)April 14 - Total kWh used - -471 Daily average kWh - -15,2

    I hope that this helps ... everything is for October 2014 through March 2015 (I don't have the 2015 January 2015 bill for some reason, so I inserted the 2014 numbers instead) I guess that the numbers probably reflect the amount of electricity that I generate from that which I use.
    May 3, 2015. 01:17 PM | 1 Like Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    Davewmart and cparmerlee ...
    The number I gave was as SDG&E stated in their last bill - -$450 - for the month of March ... take a look for yourself - here I copied and pasted what they gave -
    Amount Due: $-451.26
    Payment Due Date: DO NOT PAY
    As you can see it is a negative amount created by the extra energy for that month - alone - that I generated with the solar panels. I do NOT have air conditioning, but I do have central heating, which with the hot winters (in the 70's and 80's all this winter!) I did not use the heating much, except in December when it was in the high 30's, and of course during several of the nights when SDG&E's power went down.

    I have 39 panels with one inverter for every three panels because of the many trees around my home - I needed that, especially in the winter, when the shade from the trees tended to block out several of the panels, so most of them will stay functional. I bought the solar panel system in the spring of 2012 for about $70,000 with a $20,000 rebate from the federal government, which would make the eventual outlay $50,000 after rebate. Then, in late 2013 I had the Tesla back-up battery prototype installed, but with all the hoops to jump through with the City of Oceanside and SDG&E it took another 4 or 5 months to get it up and running. At that time, when it was being powered up, the Tesla tech who had developed the actual battery layout came to my home and checked everything out ... he was a very interesting and sharp individual who instantly knew the answer to every question that I asked. This battery system cost me $5,000 with SDG&E picking up another $10,000. I worked through SolarCity both to buy and to install the battery system.

    Even though I paid quite a hefty price for my system the costs have come way down by now, and even the Tesla battery costs less than what I paid, and it certainly looks nicer ... and also, the new battery electronics are all Tesla (my electronics used off the shelf parts, I was told, to check out how it all worked). I see that Tesla has the battery system right on their website (teslamotors.com) ... so you can go there to check out everything else on your own. I would think that they would still work through SolarCity for the installation, but I am not sure about that.
    May 3, 2015. 11:28 AM | 5 Likes Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    jerry-j ...
    Dream on, jerry! These are real problems with real solutions!

    I am in Oceanside, CA, and we had two blackouts ... one that lasted most of one day in late December of last year, then a week later we had a second black-out that last two nights and two days during 38 degree nights. A power pole burned up near Camp Pendleton Marine base, and it took SDG&E two days to finely figure out how to restore all of the power.

    When you question my integrity it is not a nice thing ... you ought to start listening to what is real instead of what you are experiencing yourself in the bay area.

    And if you want to contemplate real problems that may be coming your way within another year or so, I would start thinking about what happens when the "big one" comes to your area. I have had at least 10 dreams since September 2011 that have indicated that something enormous will be happening to our country in 2016. And the mother of the lady that I have working for me has had two dreams of her own showing the destruction to Los Angeles coming from an enormous tidal wave ... in the first dream she said saw the wave envelop Los Angeles, but it stopped just north of the San Onofre nuclear power plant (about 20 miles north of where I live). But in the second dream - which she had just last week - she saw a second wave that not only covered where Los Angeles had been but continued down the coast to where she and I live. She said that she could see the torrent of water carrying many houses with it on both sides of where she lived.

    I am just putting these predictions out there for anyone living in the inland parts of our country where if we do have extreme earth changes which could affect our country's power supply, then now, at least, we have a way to keep generating our own power in the event that something like this were to happen. Just think about it for a moment ... maybe better safe than sorry should such a scenario ever to happen?
    May 2, 2015. 11:17 AM | 2 Likes Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    portatopia ...
    Don't forget I have solar panels which cover 100+% of my energy needs ... last month SDG&E gave me a $450 rebate on the energy that I generated for them over what I used. The reason that I have such a large amount of panels (39) is precisely because in the winter rainy/cloudy season we need more panels to compensate for the shorter days and clouds. I figure about 30% charge rate during storms and 70% during times of light thin cloudy weather, which comes out to about 50% average during stormy/cloudy weather. It works just fine for me, especially here in California where we hardly have any storms (we're in a draught, you know!). And, by the way, it easily supports the blower for my central heating, as well as all of my other appliances that I need to be comfortable.

    I would suggest that many of you stop playing with numbers and start living in the real world of what actually works for those of us who already have this system ... solar panels and back-up battery. It actually works just like I have described several times, through my personal experience.
    May 2, 2015. 10:49 AM | 4 Likes Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    Look ... all of you people who think that it takes "30kw a day" to run your home need to rethink what you are saying! If you KNOW that you have a blackout then you will conserve a little in order to fit your power to your energy needs ... it is that simple, See? If you want to go hog-wild with your power and are unwilling to cut back even a little, then I suppose with that kind of mind-set you will have to have multiple batteries or a back-up generator. Good luck to you to ever satisfy your what your wants ...
    May 2, 2015. 10:37 AM | 2 Likes Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    robiniv ...
    You are wrong about what you say ... it will work just fine here in California ... as sufficient sun gets through the clouds most of the time to power the battery through the solar panels. And anyway, only a little energy is used to power the refrigerator/freezer and central heat, so it will be just fine. I already experienced an outage last year when the power was out for two days when the temperatures dipped down into the high 30's, although I don't remember whether the sun was out or not ... but I do know that I get about a half the energy that I would normally get on sunny days as opposed to when there are clouds.
    May 1, 2015. 03:07 PM | 4 Likes Like |Link to Comment
  • Net Metering Leaves Tesla Home Battery Storing A Lot Of Hype [View article]
    When all you look at is the $$$ amount that is lost or gained then you will overlook one obvious advantage that this home battery system will give you ... and that is the fact that when and if there is the inevitable blackout in the grid lasting hours, days or weeks, you will have at your ready all the power you need to remain comfortable and warm, as well as keeping all other necessities working like the refrigerator/freezer, TV, computer, lights, telephones and cellphones up and running and fully charged. And with connected solar panels even your electric car is capable of being charged and ready for use ... good to know, since if the outage is widespread even the gas stations - which depend on electricity to run - will be out of service, so people with gasoline cars will be out of luck for the duration.

    I won't go into anymore detail here since I have already covered most everything else in my earlier comments with the following SA article ... A Comprehensive Look At Tesla's Home Batteries ... http://bit.ly/1EJ6to9
    May 1, 2015. 02:21 PM | 10 Likes Like |Link to Comment
  • A Comprehensive Look At Tesla's Home Batteries [View article]
    Blue Sky & Sunshine ...
    Security is an enormous reason to purchase one of these batteries ... and with solar panels - especially in California where I am - during the day these batteries can easily be kept at or near full charge ... which leaves only about five or six hours at night to worry about using the 10 kWh of battery power; if you want to run your furnace at night, then there needs to be a bit more care taken so as to be able to maintain what is left of the battery. All in all, though, this battery can be a lifesaver when it comes to an extended outage, and also it is far better than a gasoline or diesel generator since there is absolutely no maintenance necessary - as is necessary with the former - in order to keep it in top shape. I think that for this reason, and what I said earlier, there will be a very great demand for installing this type of back-up battery, especially when paired with solar panels. And in the long run it should benefit Tesla's business and bottom line as time goes by when more and more people come to know about its benefits and practicality.
    Mar 5, 2015. 02:58 PM | 4 Likes Like |Link to Comment
  • A Comprehensive Look At Tesla's Home Batteries [View article]
    cparmerlee ...
    I thought that this was about back-up batteries ... and now you are suddenly talking about my car and how heavy it is and how I am not paying my "fair share". Sounds like you are trying to change the subject, to me. Or maybe you are just angry that you don't have a Tesla ... I don't know. In my personal opinion, though, I think that there should be a flat tax paid by everyone based on the mileage that they drive every year, just like income tax, but a "road tax" paid every year when you register your car ... and then we can do away with gasoline tax. This would be the solution to your concerns, I think ... then ALL people would pay the tax regardless of what kind of car that they drive.
    Mar 4, 2015. 12:28 PM | 4 Likes Like |Link to Comment
  • A Comprehensive Look At Tesla's Home Batteries [View article]
    cparmerlee ...
    When you start talking about "freeloaders", of which you include me, I take exception to what you are saying! In the first place, what I have is a back-up battery that is used ONLY for emergencies which does not take me off of the main grid ... it is only when the main grid goes down that I in fact disconnect from that main grid and use my own power independently. I actually pay nothing to the power company - only the required taxes (which amounts to about $.50/month) - because I SELL my own excess solar-generated energy back to them at a much reduced rate from what I pay if and when I need to do that, such as during the evening hours when there is no sun.

    Again, a back-up batter does not take the person off of the grid during normal times, so it has nothing to do with "paying our fair share" ... we just chose to buy solar panels and a back-up battery so that we can generate our own power when we need it. In this time of high electric rates we should have the choice of how we generate our electricity and how we spend our money here. The power companies all over the country are overburdened with having to generate so much electricity, so now they will at least have a bit of help here when we can sell our electricity back to them.
    Mar 2, 2015. 01:23 PM | 6 Likes Like |Link to Comment
  • A Comprehensive Look At Tesla's Home Batteries [View article]
    Zelaza ... you are totally unaware of what this Tesla back-up battery is supposed to do! It is a "back-up" battery that can be used in case the major power company grid goes out - especially for extended periods of time - then there is still electricity to power the home and stay warm and comfortable and mobile (i.e., being able to maintain charge and drive my Tesla Model S). And for this purpose it has worked magnificently for me.

    Now, as far as your calculations ... they are about as faulty as the individual who wrote the article, since you seem to be forgetting the fact that I have a large array of solar panels that will keep the battery charged throughout all of the daylight hours, so all I need the battery (by itself) for is during the evening hours, and I have had absolutely no problem here either. The monetary calculations are really superfluous, since once the major power grid goes out you really don't worry about what it costs to charge the car or keep the house running. And $3,000 is NOT a lot of money, anyway, to have this security for the 10-years that the battery is guaranteed for - and probably the battery will last a lot longer than that ... with no noise, no smell, no refilling of gas tanks, and no constant maintenance, which is messy in itself. As far as the distance that I can drive my car when charging on 120 volts ... if I charge only during the day (which is probably unnecessary to worry about) the charging may be slow, but eventually it would be fully charged. If a major catastrophe should happen where the power would go out for weeks, then I would have the ability to keep my car fully charged throughout the entire time and would still be able to drive mostly wherever I wanted within a radius of where I needed to go. Remember, if the power should go out like this in a major crisis, then most gas stations would be completely closed everywhere wherever there is no electricity ... thus, no gas ... thus, no driving your gasoline car!!! Please stop trying to make everything nickels and dimes ... what I am talking about here is far more important than that!
    Mar 1, 2015. 11:16 AM | 9 Likes Like |Link to Comment
  • A Comprehensive Look At Tesla's Home Batteries [View article]
    Jolinar_cz ... when I received my battery, in 2014, it is true that at that time SolarCity was installing these early Tesla batteries (which at the time were larger than they are now, and used off-the-shelf electronics - now they are using Tesla electronics which are better and smaller than what I have) to a small, limited test group. But now, since the start of this year, or maybe even sooner, they began selling to anyone who was willing to install their SolarCity solar panels on their home, at least in the select states where SolarCity is doing business. As far as the $3,000 price tag ... I was told about this price from someone who was about to buy the combination solar panel/back-up battery combination from SolarCity after she had just had the conversation with a representative from SolarCity.
    Feb 28, 2015. 02:24 PM | 5 Likes Like |Link to Comment
  • A Comprehensive Look At Tesla's Home Batteries [View article]
    I am one who ALREADY has a Tesla back-up batter for my solar panels ... and it was installed a full year ago! It is a 10 kWh battery, that uses only half of my solar panels, both of which by the way provides ALL of the necessary electricity that I need, and then some ... so some of what you have written in your article is very wrong.

    As far as the battery itself ... I have had several power outages - some lasting as long as two days - and this 10 kWh Tesla battery each time has proven more than adequate for my needs - running my refrigerator, computer, central heater, lights ... and if I had needed it, would have also charged my Tesla Model S and other things in my home, while totally disconnected from the main Power Grid. And, remember, I am only using half of my solar panels to charge the battery - and they kept the Tesla battery charged throughout the entire time. I am exceptionally satisfied with this battery, inasmuch as it has kept me very comfortable when we were having some very cold, nearly freezing weather during the time when the main power went down.

    Also, SolarCity has been selling these 10 kWh Tesla back-up batteries to anyone for several months now - even before Elon made his announcement - for $3,000, as long the person was also willing to install their solar panels at the same time. Again, your information is faulty.

    Elon Musk knows what he is doing and I doubt very much that he will stumble with these back-up batteries any more than he has with Tesla or SpaceX. You underestimate what he is doing and I think that you have provided misleading information with your article which needs to be corrected. That is what I am trying to do with what I have said here.
    Feb 27, 2015. 03:02 PM | 42 Likes Like |Link to Comment
COMMENTS STATS
664 Comments
2,287 Likes