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02-08-2012, 11:09 AM | #111 | |
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Is it true that if your solar array generates more power than you consume that it will actually turn your meter backwards? Ive been debating a solar array on my lawn to power and heat my pool in the summer. Interested to see if this rumor is true |
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02-08-2012, 11:23 AM | #112 | |
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Yes. This is called net metering. During the day when you are at work and the AC is not on, your meter will turn backwards as power flows to the grid (the array produces more power than you consume). At night your meter will begin to roll forward again as you consume power from the grid. Last edited by burnsniper; 02-08-2012 at 11:30 AM.. |
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02-08-2012, 11:33 AM | #113 | |
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02-08-2012, 11:41 AM | #114 |
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Yep, exactly. My meter used to spin backwards, but my utility came and installed a new digital meter that has two readings. One measures how much the house takes from the grid and the other measures how much I feed to the grid. Same principle, but I'm told this is more accurate. The meters weren't really designed to spin backwards(at least that's what my utility told me) and they weren't ac accurate as they would like when measuring the electricity flow out of the house.
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02-08-2012, 01:03 PM | #115 | |
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02-08-2012, 02:07 PM | #116 |
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But the future might not be quite that simple. In that process you are using the utility as a battery to store your energy when you send power back through the grid. There are already proposals with some state's public utility commission to charge for that service, and it probably makes sense as there is a cost to the utility for the wires and hardware even if your bill nets zero. I am also in the industry and I am sure that will be happening in the coming years making the payback a bit tougher. Some will put their own battery systems in place and that will have a cost associated with it as well.
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02-08-2012, 05:14 PM | #117 | |
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Here in "Green" NYC, we pay around 22/23 cents p/KWH. At that price, electric cars s u ck. Mayor Green-berg, Inc. says we should ride bicycles. |
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02-08-2012, 05:28 PM | #118 | ||
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"BMW says that the Active should use about 22 kWh per 100 miles. Electricity costs vary, but a typical 10,000-mile driving year should cost about $325 for electricity in the states where the ActiveE is offered. That compares with about $1500 per year for gasoline for a 128i. "
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02-08-2012, 05:34 PM | #119 |
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saw one @ the SAVAGE BMW showroom yesterday
was told they are not available to lease in our area until June 2500 USD downpayment 500 USD/month 2 year lease payment unlimited mileage 3000 USD optional charging station for home (4 hours for complete charge or it will charge off standard wall in 24 hours...) estimated yearly cost for electricity $550 (average savings of $7500 over 5 years) |
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02-08-2012, 07:42 PM | #120 |
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[QUOTE=Mr.Metak2you;11307022]Yes don't forget to mention that the power companies don't exactly buy power back at the same rate they sell it to you for. Especially where there is multiple tier pricing(kinda like stick it to the rich who use a lot of powah and charge them 4 time as much per kWh in the highest tier).
You clearly don't know what the hell you are talking about. Even at 22cents/kWh that is still waaaaaaay less than it would cost to operate a 128 with petrol. About 1/5th the cost! "BMW says that the Active should use about 22 kWh per 100 miles. Electricity costs vary, but a typical 10,000-mile driving year should cost about $325 for electricity in the states where the ActiveE is offered. That compares with about $1500 per year for gasoline for a 128i. "[/QU In most states, as long as you are not a net generator over the course of year you will get the majority of the power charges credited back to you when you net meter (based on individual state laws). Also, most of other charges (time of use, etc.) are often reduced to near zero because solar systems usually produce the most when the grid experiences the greatest demand (middle of day to afternoon). Unfortunately, most residential solar systems are really only for the wealthy or those with very good credit. A solar system that offsets ~90% of a typical US house's power will cost $28,000-$40,000. However, this can be a great investment in certain states where you break even on your investment in as little as 3 years (tax credit + state level incentive + power savings). Solar systems make the most sense in the following states based: Great to Very Good - MA, CT, NJ, CA, HI Good to Fair - AZ, NM, OH, NC, MD, CO In Some Instances - DE, IL, GA, OR Poor - Pretty much everywhere else |
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02-09-2012, 11:33 AM | #121 | |
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Also the EVSE(charger) can cost that much if the labor is very high. You can buy one for under $1,000 and install it yourself(with your own electrician) It just needs a dedicated 40 amp circuit run to your garage (#8 wire). The electrical contractors that are installing these are in many cases ripping people off, it's a very simple, three wire connection, that's all. I've installed three of them myself and I'm not an electrician. If your smart about it, you can buy one and install it for under $1,000. Paying $3,000 for one is a joke. I have two of them in my garage, see the pic below: |
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02-09-2012, 12:06 PM | #122 | |
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02-09-2012, 12:11 PM | #123 |
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02-09-2012, 12:11 PM | #124 |
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tommolog. Ive been trying to do just that. I pick up my car in 2 weeks and I havent been able to find a cheap one to buy so that I can install.
Do you happen to know where to look? |
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02-09-2012, 12:14 PM | #125 | |
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02-09-2012, 12:20 PM | #126 | |
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02-09-2012, 12:21 PM | #127 | |
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02-09-2012, 12:22 PM | #128 |
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Id be behind it being $500
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02-09-2012, 12:56 PM | #129 |
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My dealer (BMW North Haven Ct) has one in the showroom floor.
I know they are only being leased but the MSRP on the window sticker was a little over $60,000 !!!!!!! |
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02-09-2012, 06:03 PM | #131 | |
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The battery pack alone in the Tesla Model S Sport costs $45,000 to $50,000! but the car can seat 7, go about 300 miles per charge and does 0-60 in about 4.4 seconds. |
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02-09-2012, 06:21 PM | #132 | |
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http://www.lowes.com/pd_107343-76863-EVWSWBC-CP01_0__ Aerovironment sell the BMW EVSE direct for I think the same price. However I would suggest you look on Ebay. You may find one for less. You can use any 30amp EVSE other than the one made by Schneider because for some reason it doesn't work on the ActiveE. BMW and Schneider and BMW are working on figuring out why. The big savings is in the labor. Do you know any electricians? is the run from your panel far to your garage? Do you have space in your panel for the 40 amp double-pole breaker? These things matter a lot with the installation cost. If you lived near me I would have helped you do it yourself. I installed the one on the right in the picture myself. |
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