TESLA to offer 10kwh battery for only 3500 USD and 10 years warantee | |
Anonymous Coward User ID: 68170312 United States 05/01/2015 05:21 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 05:29 PM Report Abusive Post Report Copyright Violation | What's strange is the huge difference in kwh consumption between a US 5 members family home and EU 5 members family house. In the US the total per day ranges between 20-30 kwh while in the EU it is only 5-7 kwh per day. Anything above is considered wasteful. So this battery pack would be plentiful for the EU for a whole family, while in the US it would be OK still, as long as you would do everything requiring a lot of kwh, like running the washing machine, during the day time mostly. |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 05:49 PM Report Abusive Post Report Copyright Violation | Also, having a 10kw solar system on my roof, i know about how many kwh such a system outputs. During the spring/summer time i am getting 50-60 kwh per day out of it. But in high winter time, it is only about 5kwh average per day. So in the winter times, such a system would not suffice for any US home. You would have to add at least some wind turbines to produce min 5kwh average per day extra and not be wasteful. Heating with your solar system in winter times is out of the question. That's not doable unless you are going for a 100kw system which won't fit on any roof :D You need about 70kwh to heat up a 100 square meter home on average, given it has some good enough insulation. So for heating purposes you would need gas mostly still. |
Anonymous Coward User ID: 4447844 United States 05/01/2015 06:03 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 06:18 PM Report Abusive Post Report Copyright Violation | Depends on how you live. You can get a freezer which consumes only 1/3 kwh to half daily, or only which consumes 2 kwh per day. You can have ten 100w old lamps burning all day, including lightning your garden for a total of 24 kwh daily, or you can get LED lamps which will light up just as much and consume only 1 kwh daily. You can run an old desktop PC which will consume around 4kwh daily without any sleep mode, or you can have an energy efficient broadwell laptop which will be happy with less than 0.5kwh daily if you have it always on. People which go off grid take all this into consideration and adjust their behavior to be less wasteful without really affecting much of their quality of life. |
Anonymous Coward User ID: 60197640 Sweden 05/01/2015 06:21 PM Report Abusive Post Report Copyright Violation | |
Strike User ID: 69092805 United States 05/01/2015 06:25 PM Report Abusive Post Report Copyright Violation | What's strange is the huge difference in kwh consumption between a US 5 members family home and EU 5 members family house. Quoting: Anonymous Coward 69017783 In the US the total per day ranges between 20-30 kwh while in the EU it is only 5-7 kwh per day. Anything above is considered wasteful. So this battery pack would be plentiful for the EU for a whole family, while in the US it would be OK still, as long as you would do everything requiring a lot of kwh, like running the washing machine, during the day time mostly. Electric Stove/Electric Water Heater 750 watt PC 42' Tv or Two Lights Microwave Coffee pot Networking Dishwasher Dryer Washing Machine Cooler/Freezer Whatever you have in a garage Heating and Air etc... |
bigD111 User ID: 65945302 United States 05/01/2015 07:09 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 07:16 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. |
bigD111 User ID: 65945302 United States 05/01/2015 07:24 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. Clothes dryers also use 5000 watts. Plus I have 3 freezers since I live in the country, really I think it is too small. deplorably republican |
Anonymous Coward User ID: 56151070 United States 05/01/2015 07:26 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. Clothes dryers also use 5000 watts. Plus I have 3 freezers since I live in the country, really I think it is too small. you really don't know what you are talking about. |
bigD111 User ID: 65945302 United States 05/01/2015 07:34 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. Clothes dryers also use 5000 watts. Plus I have 3 freezers since I live in the country, really I think it is too small. you really don't know what you are talking about. I have a 25000 kw generator in case of long term power outage. I don't think you know what you are talking about. deplorably republican |
Anonymous Coward User ID: 140124 Canada 05/01/2015 07:41 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 1922163 Canada 05/01/2015 07:45 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 07:45 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. Clothes dryers also use 5000 watts. Plus I have 3 freezers since I live in the country, really I think it is too small. An efficient cloth dryer will consume about 1.5 kwh per run. An efficient washing machine is about 1 kwh per run at 60°C. Well, 3 freezers depends very much on the kind of freezers. It could be anywhere from 1 kwh for all 3 to 6kwh for all 3 per day. Note that this is the per day consumption. You need the battery only for the night. Someone going off grid with a 10-15 kw solar system, would do laundry during day times mostly. However, seeing how much electricity US families consume, not even a 15kw solar system would suffice during winter times unless you learn to be more energy efficient. I am not sure however if the "official" numbers i get of for the average power consumption of a 5 members family per day in the EU can be accurate. Just cooking a meal for 5 people should be close to 2 kwh with efficient electric devices. And here we are told the total average is 5-7 kwh daily, with anything above being wasteful. Maybe if you cook with gas instead or eat only once per day :D... |
Anonymous Coward User ID: 1922163 Canada 05/01/2015 07:45 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 29696048 United States 05/01/2015 07:48 PM Report Abusive Post Report Copyright Violation | What's strange is the huge difference in kwh consumption between a US 5 members family home and EU 5 members family house. Quoting: Anonymous Coward 69017783 In the US the total per day ranges between 20-30 kwh while in the EU it is only 5-7 kwh per day. Anything above is considered wasteful. So this battery pack would be plentiful for the EU for a whole family, while in the US it would be OK still, as long as you would do everything requiring a lot of kwh, like running the washing machine, during the day time mostly. Your climate is not like the USA. if it's over 85F and humid.....the AC is ON. Same goes for below 50F with heat. |
Anonymous Coward User ID: 69101846 United States 05/01/2015 07:49 PM Report Abusive Post Report Copyright Violation | Also, having a 10kw solar system on my roof, i know about how many kwh such a system outputs. Quoting: Anonymous Coward 69017783 During the spring/summer time i am getting 50-60 kwh per day out of it. But in high winter time, it is only about 5kwh average per day. So in the winter times, such a system would not suffice for any US home. You would have to add at least some wind turbines to produce min 5kwh average per day extra and not be wasteful. Heating with your solar system in winter times is out of the question. That's not doable unless you are going for a 100kw system which won't fit on any roof :D You need about 70kwh to heat up a 100 square meter home on average, given it has some good enough insulation. So for heating purposes you would need gas mostly still. You'd have to have any incredibly large solar array to get anything close to 50-60kwh... how many square meters is it? |
Strike User ID: 69092805 United States 05/01/2015 08:03 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. Clothes dryers also use 5000 watts. Plus I have 3 freezers since I live in the country, really I think it is too small. An efficient cloth dryer will consume about 1.5 kwh per run. An efficient washing machine is about 1 kwh per run at 60°C. Well, 3 freezers depends very much on the kind of freezers. It could be anywhere from 1 kwh for all 3 to 6kwh for all 3 per day. Note that this is the per day consumption. You need the battery only for the night. Someone going off grid with a 10-15 kw solar system, would do laundry during day times mostly. However, seeing how much electricity US families consume, not even a 15kw solar system would suffice during winter times unless you learn to be more energy efficient. I am not sure however if the "official" numbers i get of for the average power consumption of a 5 members family per day in the EU can be accurate. Just cooking a meal for 5 people should be close to 2 kwh with efficient electric devices. And here we are told the total average is 5-7 kwh daily, with anything above being wasteful. Maybe if you cook with gas instead or eat only once per day :D... Electricity usage of a Clothes Dryer A clothes dryer is a common household appliance to dry clothes or other fabrics after they have been washed using a washing machine. Clothes dryers use quite a bit energy because they need to spin and produce heat. The energy use of a dryer varies between 1800 watts and 5000 watts, a typical dryer will use around 3000 watts. [link to energyusecalculator.com] |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 08:25 PM Report Abusive Post Report Copyright Violation | Also, having a 10kw solar system on my roof, i know about how many kwh such a system outputs. Quoting: Anonymous Coward 69017783 During the spring/summer time i am getting 50-60 kwh per day out of it. But in high winter time, it is only about 5kwh average per day. So in the winter times, such a system would not suffice for any US home. You would have to add at least some wind turbines to produce min 5kwh average per day extra and not be wasteful. Heating with your solar system in winter times is out of the question. That's not doable unless you are going for a 100kw system which won't fit on any roof :D You need about 70kwh to heat up a 100 square meter home on average, given it has some good enough insulation. So for heating purposes you would need gas mostly still. You'd have to have any incredibly large solar array to get anything close to 50-60kwh... how many square meters is it? Not really that big of an area required if your roof if suited. I believe flat roofs are best, as you then can place the the panels on their own construction and turn them at exactly the right angle and face them perfectly. But it looks ugly then... The house is about 100 square meters and there is space for a few more panels i guess, but not a lot more. You do not want to pack it too much as you might have to repair something or want to clean them (haven't cleaned them ever yet however, but they do output almost the same still after 4 years). You need about 6 m^2 for a 1 kw system. So about 60 m^2 for a 10 kw system. here is what it produced last month (not sure why it doesn't show the last 2 days) [link to imgur.com] It depends a lot on the panels you use too. I think mine are 16% efficient, but there are top panels with over 20% efficiency out by now, requiring less space. The best would be if you had some really large property and could build a large garage/storehouse/workshop with a 60^2 roof facing towards the best position with the best angle and then use the panels as a roof. I have to admit that having those panels on my roof makes me a little uncomfortable when thinking about the case of having to do some repairs.... that would be costly if one had to remove all. |
Anonymous Coward User ID: 11363904 United States 05/01/2015 08:29 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 08:34 PM Report Abusive Post Report Copyright Violation | note that this is not peak production, as april is not such a hot month in greece. June to august are the best months. I'd say that on average i get 40-50 kwh per day from April to September. Then it gets a little meh, some days getting almost nothing at all. This is a hybrid system however. I sell everything produced for quite a lot per kwh as this was part of a program here in Greece. It would be stupid for me to consume it myself as i get much more for this "eco" power. There is a switch however which turns half of my panels into an off grid system. 5kw feeds a charge controller/inverter/power loss backup system just in case of a zombie apocalypse or whenever there is one of the many power outages here in my area. Hate it when my PC shuts off all of the sudden and i cannot get onto the net for hours, plus possible data loss. I have only 4 batteries connected to this system at the moment, as i sell all electricity anyway. They just need to give me enough power to feed my PC for a few hours if there is a power outage. |
Baconspiracist User ID: 68951348 Germany 05/01/2015 08:34 PM Report Abusive Post Report Copyright Violation | |
/\/ () ]3 () ]) `/ User ID: 69096788 United States 05/01/2015 08:40 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 08:45 PM Report Abusive Post Report Copyright Violation | If we are talking using the air conditioner in hot summer days to cool the room, a 10kw system with this battery should work as you need to cool mostly at day time which means no battery use. At night time it depends i guess. You might need two such batteries which in summer times would certainly fill up to max with 50-60 kwh produced daily. You would also have to use an efficient air conditioner (inverter) which adjusts the pump depending on how hot it is, rather than a simple on/off unit which consumes 30% more energy on average. As for heating with an air conditioner in winter times, you can forget about that. Heating up a house is a lot of kwh, no solar system can provide that fits on a roof. The exception would be the extreme of a highly insulated passive house. |
Anonymous Coward User ID: 47361395 Germany 05/01/2015 09:22 PM Report Abusive Post Report Copyright Violation | note that this is not peak production, as april is not such a hot month in greece. June to august are the best months. Quoting: Anonymous Coward 69017783 I'd say that on average i get 40-50 kwh per day from April to September. Then it gets a little meh, some days getting almost nothing at all. This is a hybrid system however. I sell everything produced for quite a lot per kwh as this was part of a program here in Greece. It would be stupid for me to consume it myself as i get much more for this "eco" power. There is a switch however which turns half of my panels into an off grid system. 5kw feeds a charge controller/inverter/power loss backup system just in case of a zombie apocalypse or whenever there is one of the many power outages here in my area. Hate it when my PC shuts off all of the sudden and i cannot get onto the net for hours, plus possible data loss. I have only 4 batteries connected to this system at the moment, as i sell all electricity anyway. They just need to give me enough power to feed my PC for a few hours if there is a power outage. damn it, thats a nice yield. this TESLA unit is indeed a game changer for those who are on the lucky side already. call me when they invent solar panels who work in this dark sh!thole of Central Europe. these units would need to literally suck in light rays to reach a sufficient power output. |
Anonymous Coward (OP) User ID: 69017783 Greece 05/01/2015 10:35 PM Report Abusive Post Report Copyright Violation | note that this is not peak production, as april is not such a hot month in greece. June to august are the best months. Quoting: Anonymous Coward 69017783 I'd say that on average i get 40-50 kwh per day from April to September. Then it gets a little meh, some days getting almost nothing at all. This is a hybrid system however. I sell everything produced for quite a lot per kwh as this was part of a program here in Greece. It would be stupid for me to consume it myself as i get much more for this "eco" power. There is a switch however which turns half of my panels into an off grid system. 5kw feeds a charge controller/inverter/power loss backup system just in case of a zombie apocalypse or whenever there is one of the many power outages here in my area. Hate it when my PC shuts off all of the sudden and i cannot get onto the net for hours, plus possible data loss. I have only 4 batteries connected to this system at the moment, as i sell all electricity anyway. They just need to give me enough power to feed my PC for a few hours if there is a power outage. damn it, thats a nice yield. this TESLA unit is indeed a game changer for those who are on the lucky side already. call me when they invent solar panels who work in this dark sh!thole of Central Europe. these units would need to literally suck in light rays to reach a sufficient power output. It's not that bad for Germany really. Maybe 20% less yearly in production compared to my area. So adding extra 20% solar panels won't really make a big difference in the total cost. The panels have gone down in pricing a lot. It's the inverters/charge controllers/battery packs and the installation cost which adds a lot. Especially the battery packs for off-grid systems were way overpriced and this is why this TESLA battery which i expect to last 20 years is a game changer. By then, there will be much cheaper and better batteries out and you will replace it anyway. |
Anonymous Coward User ID: 11363904 United States 05/01/2015 10:40 PM Report Abusive Post Report Copyright Violation | A furnace does not use 5000w at all times. That's only during the heat up phase. Cooking a meal for a family is about 1-2 kwh consumed. Also, you do not use the battery at all during day time. So any cooking done during the day does not remove anything from the 10kwh stored for the night. You have to spec for peak draw at startup. |
Anonymous Coward User ID: 68928188 United States 05/01/2015 10:43 PM Report Abusive Post Report Copyright Violation | |
Baconspiracist User ID: 68951348 Germany 05/01/2015 10:53 PM Report Abusive Post Report Copyright Violation | note that this is not peak production, as april is not such a hot month in greece. June to august are the best months. Quoting: Anonymous Coward 69017783 I'd say that on average i get 40-50 kwh per day from April to September. Then it gets a little meh, some days getting almost nothing at all. This is a hybrid system however. I sell everything produced for quite a lot per kwh as this was part of a program here in Greece. It would be stupid for me to consume it myself as i get much more for this "eco" power. There is a switch however which turns half of my panels into an off grid system. 5kw feeds a charge controller/inverter/power loss backup system just in case of a zombie apocalypse or whenever there is one of the many power outages here in my area. Hate it when my PC shuts off all of the sudden and i cannot get onto the net for hours, plus possible data loss. I have only 4 batteries connected to this system at the moment, as i sell all electricity anyway. They just need to give me enough power to feed my PC for a few hours if there is a power outage. damn it, thats a nice yield. this TESLA unit is indeed a game changer for those who are on the lucky side already. call me when they invent solar panels who work in this dark sh!thole of Central Europe. these units would need to literally suck in light rays to reach a sufficient power output. It's not that bad for Germany really. Maybe 20% less yearly in production compared to my area. So adding extra 20% solar panels won't really make a big difference in the total cost. The panels have gone down in pricing a lot. It's the inverters/charge controllers/battery packs and the installation cost which adds a lot. Especially the battery packs for off-grid systems were way overpriced and this is why this TESLA battery which i expect to last 20 years is a game changer. By then, there will be much cheaper and better batteries out and you will replace it anyway. Believe Nothing - Question Everything |