Small wind turbines can be divided into two groups: horizontal axis and vertical axis. The most commonly used turbine in today's market is the horizontal-axis wind turbine. These turbines typically have two or three blades that are usually made of a composite material such as fiberglass. Vertical-axis wind turbines consist of two types: Savonius and Darrieus. A Savonius turbine can be recognized by its "S" shaped design when viewed from above. Darrieus turbines look like an eggbeater and have vertical blades that rotate into and out of the wind.[13]
Only a community cooperative, municipal corporation or public-private partnership should buy a wind turbine. And when a community invests in wind energy, it should buy and build as aggressively and ambitiously as apparently crazy visionaries recommend, because wind power benefits from economies of size and scale. Bigger always is better; more and mightier always work better than just a few little ones. Although the biggest and best industrial wind turbines cost more than $1 million each, the more generators a community buys and installs, the more quickly they pay for themselves; and the higher the towers soar, the more electricity each wind turbine generates.

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The electrical current generated by your solar array will be direct current, or DC electricity. Most electrical appliances run on alternating current, or AC electricity. A power inverter converts the DC power of your solar array into AC power that your appliances can actually use. DC electricity travels in only one direction but AC electricity alternates back and forth. Without a power inverter, you will be forced to rewire your home and to purchase expensive DC powered appliances over lower cost mass-produced appliances made for the conventional home power source. In some cases, DC powered appliances will not be available and you will have to do without certain appliances. If you intend to be off-grid, you should consider propane to power things like stoves and refrigerators. Heat with a pellet or wood burning stove but make sure they are highly efficient modules that use less fuel.
"I did a lot of research and Wholesale Solar kept coming up with the best reviews, plus local people that had worked with Wholesale Solar previously raved about them. I was paired up with Cheyenne as my contact. She ALWAYS treated me with respect and patiently answered all my questions (treated me with customer service rarely found in today’s world)."
I normally don't write reviews but I am very pleased with the panels I got here. I purchased the first panel to keep a trailer battery and a few other things charged but I soon found more things to connect and added two more panels as needed. I'm now running my work trailer totally off solar and have three old batteries being charged to help when needed. I have a freezer and microwave, drill press and other tools plus music and the lights and no longer need to bother with finding a place to park near a power source or use a generator when I get to a job. very pleased.

Local utilities and regional power authorities are investing increasing resources to solar power generation. Both private and government-owned utility companies can leverage the recently-extended federal tax credits to encourage additional investments in renewable energy by their individual customers. As solar power generation increases on the large scale, prices for equipment will be driven down further, making it more feasible for a homeowner to invest in solar installations on their homes.
Purchase This WG700 Wind Turbine Generator 24V with Power Charge Controller CD5.0  Today! Limited Quantities Available! Call 1-866-606-3991. Purchase This WG700 Wind Turbine Generator 12V with Power Charge Controller CD5.0  Today! Limited Quantities Available! Call 1-866-606-3991. Purchase This Brand New 400 Watt Wind Turbine Generator Kit Today! Limited Quantities Available! Call 1-866-606-3991.
So how does a seemingly simple looking panel harness sunlight and transform it into electricity? Solar panels contain photovoltaic cells. These cells are where the conversion from light to electricity takes place. The cells must be made of a material like silicon or a similar single cell semi-conducting material. As light enters the cells, the semi-conductor pulls the energy in the form of electrons from it and allows them to flow through the material. In essence, this flow is actually a current. While the absorption of the light into the cell is enough to free electrons, the cells also contain an electric field that can steer the electrons where they need to go. The current is then steered to the bottom of the panel where it can then be collected and drawn for use externally.
An indemnity is an agreement between two parties in which one agrees to secure the other against loss or damage arising from some act or some assumed responsibility. In the context of customer-owned generating facilities, utilities often want customers to indemnify them for any potential liability arising from the operation of the customer's generating facility. Although the basic principle is sound—utilities should not be held responsible for property damage or personal injury attributable to someone else—indemnity provisions should not favor the utility but should be fair to both parties. Look for language that says, "each party shall indemnify the other . . ." rather than "the customer shall indemnify the utility . . ."
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Varied wind resources can exist within the same property. In addition to measuring or finding the annual wind speeds, you need to know about the prevailing directions of the wind at your site. Knowing the prevailing wind direction(s) is essential to determining the impact of obstacles and landforms when seeking the best available site location and estimating the wind resource at that location. To help with this process, small wind site assessors typically develop a wind rose, which shows the wind direction distributions of a given area. The wind rose divides a compass into sectors (usually 8 or 16) and indicates the average wind speed, average percentage of time that the wind blows from each direction, and/or the percentage of energy in the wind by sector. Wind roses can be generated based on annual average wind speeds, or by season, month, or even time of day as needed.[30]
The amount of current (amps) traveling through any electrical circuit depends on the size of the wire (AWG), the voltage of the array or battery bank, and the one way distance of the wire run. Lower AWG gauge wire has less resistance than larger gauge wire. The longer the distance of your wire run while using lower voltage the larger gauge wire you are going to need. If your solar array consists of 4 or more 90 watt panels and is more than 50' from your battery bank, you should consider using 24V as a minimum with 48V being a better choice.
The trouble with rated power is that it does not tell you anything about energy production. Your utility company charges you for the energy you consume, not power. Likewise, for a small wind  turbine you should be interested in the energy it will produce, for your particular site, with your particular annual average wind speed. Rated power of the turbine does not do that. To find out about energy production take a look at the tables presented earlier.
The reliability of small wind turbines is (still) problematic. Even the good ones break much more frequently than we would like, and none will run for 20 years without the need to replace at least some part(s). Despite their apparent simplicity, a small wind turbine is nowhere near as reliable as the average car (and even cars will not run for 20 years without stuff breaking). If you are going to install a small wind turbine you should expect that it will break. The only questions are when and how often.
Now you have to connect the solar panel to the charge controller.At the back side of the Solar Panel there is a small junction box with 2 connected wires with positive(+) and negative (-) sign.The terminal wires are normally smaller in length.To connect the wire to the charge controller you need a special type connector which is commonly known as MC4 connector.See the picture.After connecting the solar panel to the charge controller the green led indicator will light if sunlight is present.
On-site data measurement adds a new layer of confidence to the techniques discussed above, but with substantial additional costs, effort, and time, especially when the preferred methodology is to match turbine hub height and collect data for a minimum of 1 year. Obtaining several years of data is better, or 1 year that can be referenced to a longer-term data set if there is good correlation with the on-site data. A number of small, affordable wind data collection systems are available for on-site measurement and are best run for at least 1 year. These systems include anemometers, wind vanes, and temperature sensors that are mounted as close to hub height as possible. Calculating the wind shear exponent requires collecting data at two different heights. Having wind shear data is essential for conducting an accurate analysis of the cost versus benefits of taller towers. In addition, analysis must be performed to determine wind speed averages and extremes, wind distribution, Weibull parameters, the wind direction rose, turbulence intensity, vertical wind shear exponent, and associated uncertainties.[28] 

I just installed 2.55kw system. This is a bunch of boloney. The key is finding a Chinese distributor and buying good inverters the solar warehouse is trying to move for new inventory. Theres a lot of good stuff out there installers buy up and you can too if you know where to go. The cost of the panels, racking, 5kw inverter with one mppt, and wire was ~4700 dollars. I have to buy emt conduit and bender. The permit costs almost 500 here in cali. So all in all spent less than 6 grand and plan to claim the tax credit next year. There was no incentive from PG&E. Oh I put up a new meter, subpanel, riser too with ground rods.. But that had to be done anyhow- 1950s home with zinsco panel and no disconnect- I dunno how the place didnt burn down.. Bonded to the plumbing.. You can diy and save, just a lot of people in diy are more crazy than anything and do things that could burnt thier house down! If you dont understand electricity dont do it. DC is a little different and having a positively grounded inverter is nice too. You wont lose much efficiency. Getting well over 2.3kw on a good day. Code is another thing. Theyll have you put redundant things in the system for fiiefighters. DC Disconnect on the roof or outside
GoGreenSolar: A solar provider since 2006, GoGreenSolar offers products, design services, and installations. The site offers a wide selection of solar panel kits and products. They claim to offer a robust complement of installation and troubleshooting services but I’m not sure how much service this gives you in terms of design. They offer some very cheap solar kits using brands that I have never heard of but if I was going to consider buying a kit from them I would decide what brand of solar panels and inverter I wanted before I spoke to them. I would not buy their cheapest kits as these contain brands I don’t trust.
With the increasing levels of rooftop photovoltaic systems, the energy flow becomes 2-way. When there is more local generation than consumption, electricity is exported to the grid. However, electricity network traditionally is not designed to deal with the 2- way energy transfer. Therefore, some technical issues may occur. For example in Queensland Australia, there have been more than 30% of households with rooftop PV by the end of 2017. The famous Californian 2020 duck curve appears very often for a lot of communities from 2015 onwards. An over-voltage issue may come out as the electricity flows from these PV households back to the network.[58] There are solutions to manage the over voltage issue, such as regulating PV inverter power factor, new voltage and energy control equipment at electricity distributor level, re-conducting the electricity wires, demand side management, etc. There are often limitations and costs related to these solutions.

If you do have a suitably sunlit rooftop to work with, Weissman says, make sure it’s in good shape structurally. Solar installations these days can come with warranties for 20 or 25 years. If your roof will need a renovation a few years down the road, it’ll be easier to take care of that before the array goes up. That way, you won’t have to pay in extra time and money to disconnect your panels during the roof renovation and put them up again afterwards. While you’re at it, make sure you won’t run afoul of any homeowners’ association covenants that ban rooftop solar for aesthetic reasons.
The peak power rating, Wp, is the maximum output under standard test conditions (not the maximum possible output). Typical modules, which could measure approximately 1 m × 2 m or 3 ft 3 in × 6 ft 7 in, will be rated from as low as 75 W to as high as 350 W, depending on their efficiency. At the time of testing, the test modules are binned according to their test results, and a typical manufacturer might rate their modules in 5 W increments, and either rate them at +/- 3%, +/-5%, +3/-0% or +5/-0%.[18][19][20]
The kit includes an integrated automatic braking system and also a manual braking switch. It is rated for 600W power and 31mph wind speed. It has both 12V and 24V systems and features an auto-detection mode. The suggested battery capacity for this turbine is 100A or larger. The digital MPPT charge controller is specially designed to always generate the maximum power output, and operates the safety features like auto breaking and battery over-charge protection.
Going forward, there is hope for the small wind future! Certification programs are under way in various places to provide real turbine performance data. In North America this is being spearheaded by the Small Wind Certification Council, which requires third-party certification of turbine performance in a standardized fashion. Manufacturers will no longer be able to fudge power curves, or specify ‘rated power’ at hurricane-force wind speeds. This will allow you, the consumer, to compare turbines on a much more even footing.
There is one more area where buyers may get a false sense of security: Several states in the US have lists of “approved” wind turbines for their rebate programs. An example of this is the California list. The problem is that approval for this list, and the performance data provided (such as rated power and energy production) are essentially self-certified. The less-scrupulous manufacturers can ‘manufacture’ data and submit it under the pretence that it was measured.  The only value of those lists is in telling you what rebates are available, they do not provide reliable turbine information.
The best way to do a green energy project for the home is to get a kit of perfectly matched components engineered to work as planned. First options in choosing your kit are, wind only, or wind AND solar. Having a hybrid wind AND solar system is really going to make it a more consistant green energy system. We can't all afford a giant windmill or solar system, these WindEnergy7 kits are affordable. Below is a graph showing the weather cycles of wind/solar and why wind/solar hybrid is so much better than solar only, or wind only systems. .... [wind turbine guide]
What’s surprising about the Mathers’ situation is that their local wind speeds are not ideal, yet home wind power works beautifully for them. “Technically, if you look at wind maps, we’re in a bad location for wind, but we wanted to be off-grid for environmental reasons,” Cam says. The biggest issue with the Mathers’ property is that they have too many trees, and even though their small wind turbine is easily 40 feet above the tree line, the landscape slows down the wind. Wind still makes sense for them, though, because they’re off the grid, so their only electricity is what they produce and then store in batteries. They started with solar panels, but adding a wind turbine to the mix made the whole system much more stable and efficient — a major benefit when you’re solely responsible for generating your own electricity.
Where can I compare solar panel prices online? How much do solar panels cost in Denver Colorado and what is the payback period? How much do solar panels cost for homes in Orlando and Miami, Florida in 2018? Wiring solar panels: Do you wire solar panels in series or parallel? What is the cost of solar panels in Las Vegas, 2018? A new website suggests Americans may be overpaying for electricity by a whopping 27.6 billion per year
Each module is rated by its DC output power under standard test conditions (STC), and typically ranges from 100 to 365 Watts (W). The efficiency of a module determines the area of a module given the same rated output – an 8% efficient 230 W module will have twice the area of a 16% efficient 230 W module. There are a few commercially available solar modules that exceed efficiency of 24%[1] [2]
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