What are the Different Kinds of Solar Charge Controllers?

December 21, 2010 by  
Filed under Residential solar power systems

If a solar power system utilizes batteries, it will also require a solar charge controller. Solar charge controllers work to control the power moving from the solar panels to the batteries. When overcharged, the life of a battery is reduced, and a good charge controller will prevent this from happening. Visit solar power battery for more in solar interesting facts.

The most basic kind of charge controller works to measure the battery voltage and opens the circuit to halt the charging process once the battery is fully recharged. In early charge controllers, this was accomplished through the use of a mechanical relay.

Eventually, pulse width modulation (PWM) became the norm for the charge controlling mechanism. This is a technique by which the amount of power supplied to a battery is reduced gradually as the battery reaches maximum charge. PWM extends battery life even more, as it decreases stress on the battery. It can also keep batteries in a fully charged state, or “floating,” indefinitely. PWM chargers are more complicated, but they tend to be more durable, as they don’t have any breakable mechanical connections.

Maximum power point tracking, or MPPT, is the most recent step in solar charge controller technology. The central advantage of MPPT controllers is their ability to turn excess voltage into amperage. This feature has a couple of significant benefits.

While 12 volt batteries are the standard for solar power systems, systems using any voltage level can benefit from these features. Solar panels can often provide a lot more voltage than the batteries require. Converting the excess voltage into amps reduces the time needed to charge the battery, while keeping the charge voltage at an optimal level. This way, the solar power system as a whole operates at the highest possible level of efficiency.

An MPPT charge controller will also reduce the amount of power loss within a solar power system. The lower the voltage of electricity, the more loss it experiences as it travels along wires. The level of voltage generally differs depending on specifics within the system. MPPT controllers are capable of making use of significantly higher voltage. Systems with MPPT controllers are more efficient for this reason as well.

In comparison to PWM controllers, MPPT charge controllers are somewhat more expensive, but their performance is significantly better. It’s highly recommended that, if you can afford it, you go with an MPPT charge controller. Finally, it’s also possible to prevent reverse-current flow with some modern charge controllers. Solar panels will stop generating electricity when they are no longer in contact with sunlight, and the batteries can actually start sending electricity back to them at these times. This sort of power loss can also have a detrimental effect the overall efficiency of a solar power system. At these times, a charge controller will open the circuit, preventing any reverse-current flow back to the solar panels.

Rising oil prices and concerns about pollution are motivating a significant number of individuals to consider solar battery chargers. You can read 12 volt solar charger for more in solar interesting info about solar chargers.

Can you build a solar panel for under $200? If you want to know the answer, take a look at this guide Homemade Energy Review. In this guide, you will get specific instructions on what is best to build based on the size of your house and your location. You will also get step-by-step diagrams on how to build your own solar power system.

Home Solar Power Systems Uses And Benefits

December 21, 2010 by  
Filed under Residential solar panels

Home solar power systems are a great way to generate electricity that is clean, natural and renewable. Home solar power systems are a terrific energy alternative for homeowners and business-owners alike. Electricity is generated through photovoltaic (PV) panels which are, essentially, sets of treated silicon cells that are aligned in a string so that electric power is produced when exposed to sunlight.

It is possible for a home to be powered 100% through solar energy, but it is far more common for homeowners to use home solar power systems more to simply reduce energy costs. This is most likely due to the cost of the installation, as securing enough panels to supply an entire house with electricity would be rather high for the average person. With that said, home solar panels are most definitely a viable option to supplement a current source of energy if cost of the panels is an issue. One thing to remember, though, is that some government programs may be available to help defray some of the cost. This is, at minimum, a funding option to consider.

There are numerous advantages to home solar panels as the energy choice, whether for residential or commercial facilities. Here are a few primary benefits of home solar panels.

Savings

Solar energy makes a difference in the pocketbook. This is found to be especially true in the warmer and colder seasons when you may normally use an air conditioning or heating system. There should be a huge decrease in the monthly electricity bill all year, but particularly during the summer and winter seasons.

Less Pollution

Another advantage to solar panels is the lack of pollution given off as compared to conventional power sources. Electricity generated by solar panels is a natural, clean energy source and 100% “green,” except for its production of the cells.

Low Maintenance

Installing the solar power system is the most you will ever have to do to maintain solar electricity. Once installed, the solar panels really do not require much maintenance at all. This was intentional in their design, actually. Satellites in space use solar systems to provide energy to the satellites, and maintenance and repair is really not feasible under those circumstances. The same low maintenance advantage remains for the solar power systems use in homes and businesses.

Dependability

One thing to consider when purchasing home solar power systems is including a battery storage system. The advantage here is that you can have ongoing electricity and power even during grid outages. When properly installed, solar panels electricity systems are extremely reliable with the lifespan reported to be 25 years (the standard warranty is 20 year).

It is always a relief to know that (as a consumer) there are still options, despite the ever increasing cost of energy. Home solar panels are a great energy alternative to consider. In the long-term, the monthly energy savings are rather significant and typically cover the cost of your installation, and then some. Of course, supplying clean and green energy for those we love is really quite priceless.

Recent Home Solar Panel Developments

December 13, 2010 by  
Filed under Residential solar power systems

 

The average homeowner can reduce or eliminate their annual electricity bill by installing a solar power system. If they install a properly sized solar panel array they can easily generate all of their power from sunlight and never have to worry about another utility bill again. Even though these systems are fairly easy to install, there are a few problems that homeowners can encounter that may prevent them from seeing the maximum return on their investments. Some of these issues have been overcome in recent years with improvements to the solar power technology and these innovations make these systems the perfect answer for most homeowners. These developments can be useful whether you are using purchased solar panels or a Do It Yourself solar panels.

Their home’s orientation to the sun is probably the largest concern for most homeowners. Homes must have a side that faces south in order for solar panels to operator at peak efficiency. This ensures that the solar panels have a good amount of sun exposure throughout the day, as the sun travels across the sky. This was a critical concern in years past as older solar panels were very specific in their need to have a constant sun exposure for most of the day to generate power. If their positioning was even a little bit off, it could have a major impact on the amount of power they could generate

More efficient solar cells in modern panels solves this problem. Besides producing more electricity with similar amount of sunlight, these newer solar cells can also tolerate a more severe angle relative to the sun. This wider tolerance means these newer solar cells can be used in many locations that were not good choices for the older cells. This makes them a perfect fit for installations that have a lees than perfect alignment for maximum solar power generation. These newer solar panels can still generate a lot of power even when they are out of a traditional alignment with the sun and also do a great job in periods of diminished sunlight as well. Because these newer solar panels don’t need to pointing directly at the sun all the time, they don’t need to be turned during the day like a lot of older panels. So, many people can now do a home build a solar panel install.

This is much better than older solar panels that needed a large, continuous amount of sunlight to generate electricity. Because of this limitation they were inactive in the early morning and late afternoon hours when the sun was rising and setting. The amount of sun at these times doesn’t cross the electricity production threshold required by these older panels. The newer solar panels can take advantage of these lower levels of sunlight and will produce power proportional to the level of sunlight available. They will produce maximum power during mid-day when the sun is at it’s peak, but will still generate electricity, though smaller amounts, as long as some sunlight is available. So, these more modern solar panels can produce more average power per day and therefore more total power through the year. Homeowners who previously could not justify the cost of a solar power system now can because of the significant additional power these newer solar panels can provide.

A solar power system is one of the best ways to increase the resale value of your home. No matter whether you supplement the electricity provided by the power company or supply all of the electricity needs of your house, a solar power system will definitely increase the value of your home. A simple diy solar charger will get you started in the right direction.

How To Make Your Own Solar Panels

December 13, 2010 by  
Filed under Residential solar panels

In case you have previously explored the cost of commercial solar energy panels you were perhaps put off by how high priced they are.  But producing your own personal solar panel products is unexpectedly more inexpensive and easier than you’ve probabably heard.  No specific knowledge are required.  All you need will be the components and several common tools.  Providing you actually don’t mind doing Do-it-yourself then this may be a possibility which may interest you.  There’s not much variance when it comes to effectiveness between any cheap solar panels you make your self and one which has been assembled commercially.  The most significant variation is the total price.

A solar power panel is almost nothing more than a collection of photo voltaic cells which have been connected alongside one another.  This is housed within a wooden box that has a plexiglass cover to be able to guard it from the elements.  This also makes set up and maintaining a lot easier.  The solar energy cells can’t be made on your own and these will be the greatest expense.  You will have to spend money on these, though the secret is to buy these slightly spoiled or blemished.  This won’t have a substantial affect on their performance however it will considerably keep the actual costs lower.  You need search no further than eBay with regard to sourcing the actual solar power cells you need for you to construct your solar energy panels.

Thirty six approximately of these types of solar power cells is a very good quantity for assembling with each other to manufacture a solar power electrical.  This can make close to 18v of electricity; therefore quite a few panels have to be created to produce energy sufficient to power your household.  But at the expense of $100-200 for every solar panel it’s definitely not likely to cost much more than a couple of thousand dollars.  This measures up to several tens of thousands of dollars with regard to commercial solar power panels in addition to having them set up.

Once you have created an array of solar energy cells the next thing is to bracket all of them inside the wooden cases.   The lumber can be cut for you to the right size at the store together with the plexiglass tops.  The photovoltaic cells will be the most costly component of the solar power electrical panel and you will definitely also have to purchases several electric batteries in order to keep the electrical power.

Besides that just about all your will need in order to make solar panels are a few commonplace tools plus some low-priced components such as screws, electrical fittings along with copper wire.  The ideal place to start is to get hold of a thoroughly tested solar panel design and construct that according to the instructions.  For this I would suggest the Earth For Energy how to manual that will walks you step-by-step through the whole procedure for making the panels in addition to installing them.

Build Your Own Solar Panels

December 10, 2010 by  
Filed under Residential solar power systems

Solar power – The Real Facts

Most power plants inside the United States and all over globe are using fossil fuels to operate and create electrical energy. Fossil fuel has been applied as a power source as long as man has mastered how to generate electrical power. Fossil fuels have been around for ages and when man started employing these energy sources no one thought about the consequences. Fossil fuels will be depleted and there is going to be a shortage of fossil fuel supplies in the very near future. This shortage of fossil fuel will have its effect on our daily lives and various related industries. Nowadays we see some of these effects already, fossil fuel prices are rising and energy is becoming far morel expensive. Although fossil fuels are more scarce, the need for fossil fuels will still be there and will not decrease in the near future. To solve this shortage of fossil fuels we will need to look for other possibilities for our power demand.

Learn how to Make Your Own Solar Panels in a short weekend’s time.  It’s a Family affair!

Fortunately, alternative energy sources are getting more interest. For example, areas with high water falls are experimenting on building hydro-electric electric power plants, that are becoming very successful. Other locations with high wind speed  will make full use of wind mills which can convert wind power into energy. Furthermore,  thermal and tidal energy are very good alternatives.

Discover what it’s like to have Solar Power For Your Home!

Photo voltaic energy is also simply one of the energy sources that’s gaining in awareness. Photo voltaic power has steadily been growing. Nowadays pv power is widely used in countries mainly because the advantages are a great many. Our pv energy source, the sun’s rays, its life span is estimated to last for an additional 4.5 billion years. It truly is fair to say that this power source is almost infinite.

Rate of Energy from the Sun

The sun’s radiation reaches a certain location in space and the Earth’s orbit is within this location is subject to approximately 1,400 watts per square meter. Out of this, photovoltaic cells (also known as solar cells) here on Earth can capture 19 to 56 watts per square meter that is equivalent to .45 to 1.35 kilowatts per hour (kWh) using a day and night average over a year’s period of time.

Therefore, if there were much more areas on Earth that could be covered by using more photo voltaic panels, then solar might be able to produce much more power in the form of electrical power. This is a greater amount of power than is currently offered from oil, gas, and other sources of power combined (assuming 8% photo voltaic cell efficiency).

Conversion of Solar energy – There are two ways of capturing solar energy.

The first is the primary solar energy which involves only one conversion into a usable form. For instance:

- Sunlight strikes the pv cell, converting it into power.

- Sunlight hits the absorber surface of a photo voltaic thermal collector, converting into thermal power which can be utilized to heat homes in the course of the chilly periods.

The second could be the indirect photo voltaic electricity which involves a lot more than a single conversion to reach a usable form. For instance:

- Plants use photosynthesis to transform solar energy to chemical energy,  which could be burned later as fuel to generate power (also called bio-fuel technology).

- Hydroelectric dams and wind turbines are indirectly supplied by solar energy through its interaction with the World’s atmosphere.

Just like any other types of power resources, pv electricity has its ups and downs.

Here are the Pros of: Photo voltaic Power

- Co2-free.

- Solar powered establishments could be run with much less services or routine maintenance.

- It is abundant. As mentioned before, most of the inhabited areas here on Planet Earth are touched by sunlight.

Here are the Cons: Pv Electricity

- Even though it truly is abundant, non-tropical areas can sometimes receive a small amount of sunlight. Therefore, electric power that is going to be produced in these areas is at a minimum.

- Available only in the course of the daytime hours and therefore is not accessible the course of night time.

- Photovoltaic cell technologies create direct current (DC) electric power which unfortunately needs to be converted to alternating current (AC) electric power utilized in distribution grids.

Once massive development of the use of solar electricity is evident, and you should expect that each household or industry in the globe will now be powered by pv energy. It truly is not just a dream, it is going to be a dream come true.

So isn’t it time for you to Build Your Own Solar Panels?

Alternative Power: Solar Power For Homes

December 10, 2010 by  
Filed under Residential solar power systems

Location is essential when it comes to deciding on solar power as alternative power source for homes. The You can only determine the right number of solar cells and panels by taking into consideration elements like climate, the position of the home, and the total area that you need to generate power for. You can’t make the plan without taking such elements into consideration. Here are some tips and suggestions that will make things easier and will help you find a great solution in the process.

Determine how much energy you consume monthly. You need an average estimate in order to determine the size of the solar system.

Find out the number of solar days and the average rainfall specific to your living area. Most average estimates start from the value of five-hour maximum power for the solar panels. That’s the best you can achieve with a home system.

With solar power for homes, you should be able to generate hot water, heat the house and power some appliances. Solar electricity still remains expensive at the moment for us to be able to power all the utilities on it alone. This is why households that have a solar system installed, also use gas in parallel.

Before you make solar panels for your home, find out about the amount of electricity generated by the cells and the technical features of the solar panels by inquiring at the manufacturer directly. Determine how much power you can make with five hours of exposure per day, and compare these data with the consume you estimate for your family.

The initial investment to generate solar power for homes is pretty high, rising up to sixteen thousand dollars. An estimate calculation indicates that you will need around 41,000 sq. in. of solar panels to supply your entire home with electricity. You can lower the costs by using tax rebates and federal tax credit programs that help you save up to thirty percent of the overall costs.

Besides the solar panels as such, cash will also go into battery banks, inverters and professional installation. The more appliances you want to power, the higher the cash you have to invest in the system.

So far the costs of solar power as an alternative power source for homes seem scary due to the initial investment. Such home improvement still remains a ‘luxury’ for millions of Americans. Hopefully, things will change for the better, and solar power for homes will be more accessible in the very near future.

Home Solar Power System Batteries

December 8, 2010 by  
Filed under Residential solar power systems

 

There are a number of different types of batteries, but which one is best for solar power? By the end of this article, you will know the answer. If you are planning to install a solar power system and you want to use electricity when the sun isn’t shining, you’ll require a way to store the power generated when the sun is shining. The way to accomplish this is typically with batteries and a proper charge controller. So, what kind of battery is the best for use with solar panels?

Many people would probably first think of the new battery technologies used in devices like cell phones, laptop computers and also in hybrid cars. There are a couple of reasons why they aren’t so good for solar, which I’ll explain.

The biggest advantage these newer battery technologies have is size and weight. These newer battery technologies, though, cost a great deal more than the older technologies for the same capacity. These newer types of batteries make devices like cell phones more expensive, but they allow the devices to me much smaller and lighter and in these applications size and weight are more important than cost.

Your solar power system, though, isn’t going to move around. What is going to be important is having as large a capacity as you can. For this reason, price per amp/hour of capacity is a lot more critical than being small or light.

If you want the best value for a given battery capacity, you can’t beat regular sealed lead acid. This is the same type of battery that is used in cars. The newer types of batteries are going to cost you between 2 and 4 times what sealed lead acid batteries will for the same capacity. Sealed lead acid batteries are rugged, cheap and safe.

In most solar power systems you will find 12v sealed lead acid batteries. 12, 24 or 48 volts are the most common voltages for solar systems. By wiring together 12 volt batteries in series, you can produce any of these voltages. You can then begin to increase the number of appliances you can supply electricity to and also increase the amount of energy you can store by combining the groups of batteries in parallel.

For charging your 12 volt batteries, you should use a 12 volt solar charger. The charger will make sure the voltage going to the batteries is correct, and will prevent overcharging.

A power inverter will allow you to supply power to devices you would normally plug into the wall . To mix power from your batteries and from the power company, or to sell excess electricity back to the power company, you will need a grid tie inverter. If not, a standard power inverter will be cheaper and work fine for your standard appliances.

So there you have it. For a home solar power system, tried and true older battery technology is best. For home solar systems, sealed lead acid batteries are what you should use.

Solar Power Generation

December 8, 2010 by  
Filed under Residential solar power systems

Prospective users of home solar power systems may find that they have different needs in terms of the appropriate number of solar panels for their systems If you’re just looking to replace a portion of the power you currently get from the local utility, then any number will prove useful. Figuring out how many solar panels are needed to truly go off the grid only takes a few steps.

The first step is figuring out how much electricity you use in your home per day. The simplest way to do this is to refer to your previous monthly electricity bills – the more you have on hand, the more accurately you can arrive at a figure. (Many utility companies now provide the option of looking up previous bills online.) Use these bills to figure out how many kilowatt-hours (kWh) you use per month. Divide this figure by 30, and you’ll have a figure for your average daily electricity usage in kWh.

Another factor to consider is insolation. The term “insolation” refers to the amount of usable sunlight the panels will experience in a given area. Solar panels only produce power when they are struck directly by sunlight. Every solar panel has its own requirements in terms of minimum intensity of sunlight in order to work. In most areas, sunlight exposure will vary throughout the year. These variations, of course, make a difference with regard to solar panel performance. The average exposure for a given area is indicated by its insolation value. Maps displaying insolation values can be found online. You can find the power capacity you’ll need from your solar power system by dividing your daily kWh figure by the insolation value.

The last factor you’ll need to take into consideration is the amount of loss from your solar power system. Even with more recent systems, there is still a slight power loss during conversion. This can be tough to measure accurately, but it’s generally safe to use the figure of 25%, so if you multiply the figure from the previous step by 1.25, you’ll get the amount of power (including loss) that you need. Now you can see how many kWh of electricity you need, adjusted for insolation and efficiency.

Divide this figure by the output in kilowatt hours of your solar panel of choice to find out how many of these panels you’ll need to produce enough power for your everyday needs.

One of the primary questions a homeowner faces when deciding on whether to install a home solar power system is, “How many solar panels do I need?” If you need to know the answer to this question, head on to How Many Solar Panels Do I Need?

For the finest guide to building your own solar panels, including detailed instructions and step-by-step videos, go to Build Solar Panel. You may also be interested in a mini course on how to build your own solar power system. Go to Solar Power Calculatorto sign-up for a 6 part mini course.

A Review of the Best DIY Solar Panel Guides

December 6, 2010 by  
Filed under Residential solar power systems

GreenDIYEnergy

GreenDIYEnergy is the best and most complete DIY solar guide. It includes 17 different components ranging from ebooks to spreadsheet to videos. Video quality is what really makes GreenDIYEnergy stand out.

GreenDIY Energy includes 6 videos which cover the entire build. The videos are at a resolution of 852×480 and are mp4 videos. They are much larger and higher quality than the videos in the other DIY solar panel guides. The videos cover the entire process step-by-step, all the way from start to finish, and look really good. The high resolution and big size make it easy to see everything.

To start, the videos show you what tools and parts are required to build the solar panel. Next, acquiring and soldering the solar cells together is shown. Building the container and affixing the solar cells is covered next. Then the videos show final wiring and finishing of the solar panel. The last step is connecting the solar panel to a volt meter so you can watch it producing electricity.

GreenDIYEnergy also includes ebooks on topics like DIY solar power, solar electrical, solar installation and solar tax credits. With over 200 total pages, the ebooks are really comprehensive. Also included are spreadsheet which will show you how many solar panels you’ll need, sizing for batteries, charge controller and power inverter and how much electricity your appliances consume.

GreenDIYEnergy is the best and most comprehensive DIY solar guide I have seen, after buying and reviewing quite a few DIY solar guides in preparation for building a solar panel for my electric bike. For my complete review, visit GreenDIYEnergy Review.

Homemade Energy

Homemade energy is also a very good DIY solar panel guide. also include videos, more videos than any other guide, in fact. There are also ebooks, though not as many as GreenDIYEnergy, and spreadsheets that are very similar.

There are more videos in Homemade Energy than in any other guide. They show the whole build step-by-step in plenty of detail. You get to see everything – parts and tools, connecting the solar cells, constructing the box and cover, affixing the cells and final finish. They are flash videos and are very good, though not quite as big and high quality as the videos in GreenDIYEnergy.

The ebook included with Homemade Energy is pretty comprehensive and covers all facets of solar panel construction. The best way to use the ebook is as a reference in addition to the comprehensive videos. The spreadsheets they include are pretty similar to the ones in GreenDIYEnergy.

I would say GreenDIYEnergy is a little better than Homemade Energy mainly because of the higher quality video and more ebooks. You definitely get your money’s worth with Homemade Energy and it is a very good package.

For my complete review, check out HomemadeEnergy Review.

Earth4Energy

Earth4Energy would be my 3rd choice. The ebooks, videos and spreadsheets they include aren’t quite as good as the packages above. While I think the other guides are ahead of Earth4Energy when it comes to a solar project, it is the only guide to include video for a wind project.

The videos Earth4Energy includes are not comprehensive, but they do cover the parts that most people will find the most problematic. You have to go to the ebook for much of the build information with Earth4Energy, while the other 2 guides show you the whole project from start to finish in the videos.

While not as comprehensive as the other two guides, the ebook is pretty good. Earth4Energy includes online calculators for appliance electricity requirements, solar panel output and battery sizing.

So, can Earth4Energy help the average person to build a solar panel? I think most people will be able to build a solar panel with Earth4Energy, but the other two guides include more video, which is the most important part of the package in my opinion. For those of you planning to build a wind generator, Earth4Energy is the only guide that has video for a wind project. Most people will be able to build a DIY solar panel with Earth4Energy, but you’ll get more value for your money from either of the other two guides.

To read my complete review, visitEarth4Energy.

Do It Yourself Energy: The Best Guide On Do It Yourself Energy

December 6, 2010 by  
Filed under Residential solar power systems

You can save a lot of money when you build solar panels using Do It Yourself Energy guides. Some of the things you can build yourself include solar panels, wind turbines, and magnetic generators. These are normally pretty comprehensive guides, that come fully equipped with diagrams, written instructions, videos, contact info if you need help, and even a shopping list.

Take a look at the do it yourself wind energy guides to help you make your own electricity.

Being an environmentalist and self-proclaimed geek, using the do it yourself energy guides, I attempted to build the solar panels and wind turbines for $200-$300. I first did my due diligence and found out the top green energy product in both customer satisfaction and product reviews.

The truth is that I’m not good with projects and hands-on type stuff, so I wanted to be sure that someone like me could be able to put together a solar panel or two without any problems. I really just wanted to do solar panels since I don’t get much wind here where I live.

The metrics I used was difficulty level and fun factor. Despite my background as resident geek of my home, having something usable was critical as I’ve never been a very technical builder.

Power4Homes is the best green energy product to build you own solar panels at home. After reading some Greendiyenergy reviews, I knew it was the sure thing. I went home and built my first solar panel.

Thanks for reading this article on do it yourself energy and good luck on your first solar panel build.

 

Next Page »