Home Wind-Power Turbines Make Headway 163
Pickens writes "Wind turbines, once used primarily for farms and rural houses far from electrical service, are becoming more common in heavily populated residential areas as homeowners are attracted to ease of use, financial incentives and low environmental effects. Experts on renewable energy say a convergence of factors, political, technical and ecological, is causing a surge in the use of residential wind turbines, especially in the Northeast and California. "Back in the early days, off-grid electrical generation was pursued mostly by hippies and rednecks, usually in isolated, rural areas," said Joe Schwartz, editor of Home Power magazine. "Now, it's a lot more mainstream." Some of the new "plug and play" systems can be plugged directly into a circuit in the home electrical panel and homeowners can use energy from the wind turbine or the power company without taking action. Schwartz says that even with the economic benefits, it can take 20 years to pay back the installation cost. "This isn't about people putting turbines in to lower their electric bills as much as it is about people voting with their dollars to help the environment in some small way," he said."
Re:How green is it? (Score:4, Informative)
In this area, we get about the same amount of yearly rainfall as in places like Santa Fe, New Mexico where the use of adobe is very common. I think it would do quite well.
For cooling, swamp coolers work quite well for us.
Re:a little extra info (Score:3, Informative)
2) there are provisions such that the buyback is reduced if more people take advantage of it
3) they don't pay you. They simply credit you for the appropriate amount of kWh. If you're below zero at the end of the month, they still don't pay you, and your bill won't actually be zero.
Re:How green is it? (Score:5, Informative)
They found that is not the case. Birds hardly get killed by turbines - accidents happen of course, but are rare.
The researchers thought that this is because of the noise those turbines make, even upwind this is audible to the birds at sufficient distance. So they just fly around them. The mortality was as low or lower than around power lines: those also kill birds that happen to fly into them.
This result actually surprised the researchers, in a happy way of course. And the research being done by a.o. animal protection groups gives it quite some credit to me.
Re:Buying One Myself (Score:4, Informative)
Re:How green is it? (Score:3, Informative)
This type of simple systems are common for powering seaside holiday bungalows.
Re:How green is it? (Score:4, Informative)
"The BWC EXCEL (http://www.bergey.com/) is a modern 6.7 meter (22 ft) diameter, 10,000W wind turbine designed for high reliability, low maintenance, and automatic operation in adverse weather conditions"
"Prices, which include a voltage regulator, pump controller, or a line-commutated inverter, range from $21,900 to $27,900."
"The BWC EXCEL is most often installed on a guyed lattice tower, which is available in heights of 18 m (60 ft.) to 43 m (140 ft.). Prices range from $7,400 to $12,680. "
SO, *worst case scenario* is 27,900 + 12,680 = $40,580.
Now, Electricity is what, about 10 cents per kilowatt hour? So $40,580 will buy 405,800 kwh of electricity.
In the last 2 months, I used a total of 946 kwhs for my small 2br apartment. Let's say a house'll use twice that, or about 1000kwh per month.
It'll take 405 months (33 years) for the system to pay for itself.
Of course, Your electric bill is more than just 'kwh x price per kwh'. Heck, I pay more in "Power Supply Charges" than I do in "delivery and System charges". All in all, I pay 19.39 cents per kwh. That means $40,580 will buy 209,499 kwh of electricity, and the system pays for itself in 210 months, or 17.5 years.
Of course, that doesn't take into account any future electricity price increases. It also doesn't take into account how, with the right system, you can keep up and running indefinitely the next time there is a grid blackout or winter storm that knocks out the power.
Re:a little extra info (Score:3, Informative)
Nuclear is great indeed for a base load: but that's it, base load. It can not easily be switched on or off like a coal or gas fired plant, which can change load in a matter of minutes.
Your idea of using some power dump is nice, but electrical vehicles are not the place. How are you ever going to switch on and off their charging for a start? When the wind falls, these chargers should be switched off. That requires some sophisticated communications, and is quite error prone. And how are you going to get to work after a windless night, or a gusty night where your charger is switched on and off but mostly off?
Power dumps could be cold storage warehouses, as discussed on Slashdot a few years ago (sorry, no link). Other power dumps, used already in e.g. France which is over-reliant on nuclear, could be pumping up water to the top of a hill during the night, and let it run down during the day when necessary.
Wind power is unstable, and we have to live with that. As nuclear is only a base load, wind may be used during the night to power the cold storage warehouses, which don't mind having no power for an hour or so. But during the day you will need back-up from conventional sources, just to maintain reliability. So far we haven't found a sufficiently reliable renewable energy source do do it otherwise.
On top of that power dumps are nice but also have limited capacity, both in absorption and release of energy on demand. They can cover fluctuations measured in time spans of minutes to hours maybe - not the longer term fluctuations such as a windless week.
Re:a little extra info (Score:5, Informative)
The other way is to have 2 meters- one for what you use, and one for what you sell to them. Even though they only pay wholesale rates, it would be possible to sell them more than you use, and actually make money.
Re:How green is it? (Score:4, Informative)
Re:How green is it? (Score:5, Informative)
if the above system seems a bit costly, try this:
$2,590 1 kW XL.1 Turbine, with PowerCenter
$1,595 60 ft. Tilt-up Tower
$450
$1,044 1,500 W Inverter System
$5,679 Total Cost
$5679 = 29318 kwh, which is 30 months payback.
Re:Those are some loooooong days (Score:3, Informative)
What I calculated was how long it would take (at your current electric payments) to pay off the windpower equipment.
Actually, if you look, I assumed a house would use 1,000,000wh (1000kwh) per month. A 10,000w system could make this in 100 hours, or about 4 days. Of course, it won't be running at full power, but even at 1/4 power, it only needs 16 days to make all the power you need in a month.
Re:Buying One Myself (Score:4, Informative)
Re:How green is it? (Score:3, Informative)
Indeed. But you don't need to cut yourself off from the gird; and, indeed, in Europe at least, when you have an excess (which you sometimes will) you can sell electricity back to the grid at a preferential price.
Re:a little extra info (Score:3, Informative)
Whereas in Germany, and in some other European countries, they have to pay (quite a bit) you more for every KW/h you sell them than for the ones they sell you.
Actually if you have running water on your land a pelton wheel [wikipedia.org] will typically give you more reliable and cheaper power than a wind turbine.
Re:How green is it? (Score:2, Informative)
Well, not all windpower generators take their design from 300yr old Dutch models; some companies [metaefficient.com] remember we're in the 21st century. On their website there's a picture of their system on a low-rise apartment building; it's so invisible it could placate the most rabid NIMBY-ite.
> free poultry
Some companies [avinc.com] are even putting grates in front of their blades. I do find it amusing when people become so concerned about the fauna when you talk about renewables when they never care about the small animals taken out by transformer stations unless said animal 'terrorist' kills himself as a blow against human imperialism against his species.
Re:How green is it? (Score:3, Informative)