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Solar energy is a renewable source of energy which is gaining huge popularity in the whole of the world. What is amazing is the quality to restrain and be used again and again. It is believed that one day the energy which we are all presently using might finish but solar energy is something which can be renewed and used for ages to come. Not only in households even in many commercial sectors has it gained wide popularity.

Solar energy is something which has no end and can be used again and again. What is interesting is the set up of this energy is done by professionals who install the whole solar panels that receive the sunlight to form it into usable energy for light and cooking in the house. The facts about solar energy are quite interesting as they not only serve the purpose of living but can also do a lot of things beyond that. In the recent times it is expected that solar energy will replace all non renewable form of energies as they have a fear of getting over very soon.

One of the most beautiful states of America named California has seen a huge rise in the solar energy. Here many people in their personal homes as well as workplaces are now backed up by solar energy. One thing very interesting of this energy is once the installation is done there is no more problems as the solar panels always store and convert the sunlight into various energies required for house and workplaces. Solar system installation in California now has become very common where in many families and workplaces have installed them for a peaceful and hassle free use whenever required.

The facts of solar energy are very interesting as they are the only source which can be used for endless period. Apart from this solar energy is also the future energy. Many places have installed the solar panels and are now totally depended on it. What is interesting is once the installation is done there is no expenditure at all keeping the regular maintenance aside.

Seeing the major benefits it provides solar system installation in California has now become very common where in a lot of houses has totally become dependent on this energy. There are many benefits like reduced cost, self set up which removes the hassles of depending on others for light and gas for food. California is slowly turning out to be a totally dependent state on solar as the future is solar energy.


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Concern over greenhouse gas emissions (GHGs) has produced a new phenomenon – leases of rooftop space for the installation and operation of solar power facilities.
Last May Ontario passed the Green Energy Act. One of its main objectives was to establish a feed-in tariff program (a “FIT” Program) whereby the Ontario Power Authority (the “OPA”) committed to purchase, at very favourable rates, all of the green energy produced in the Province. In response to this incentive, owners of buildings are likely to be approached by solar power companies wishing to lease rooftop space to install and operate green energy systems.

Pros and Cons

Once an application is approved by the OPA, the applicant must sign a power purchase contract with the OPA for a term of 20 years. An important component of that contract is the transfer to the OPA of all of the environmental attributes associated with the project. As a consequence, any carbon credits and renewable energy credits belong to the OPA and not to the solar power company or the landlord of the property on which the solar power facility is installed.

Carbon credits arise under “cap and trade” systems such as that which Ontario intends to impose. Under a cap and trade system, energy generating plants, commercial buildings, factories and other facilities are restricted to a prescribed annual allotment of permitted tonnes of GHGs emitted by their operations. If the annual allotment is exceeded, the facility owner must pay a fee or fine to the regulating authority unless it is able to purchase carbon credits. Carbon credits arise where a facility succeeds in keeping or reducing the GHGs that it emits below its allotment. Carbon credits can be bought and sold on a commodities market.

Renewable energy credits occur where an authority imposes a requirement that a stated percentage of energy used must be provided by renewable energy sources such as solar power, wind power, biomass and similar renewable energy facilities. To meet annual targets, users of energy can purchase renewable energy directly from a supplier or they can purchase credits that are used to fund renewable energy products. Twenty-nine U.S. states and the District of Columbia have established regulatory schemes mandating that the energy production of the state must be from renewable energy. U.S. federal legislation is expected to establish a national program and Canada will almost certainly follow suit.

At this time, environmental attributes do not have a large value, but it is anticipated that their value will increase (perhaps very dramatically) within the not too distant future. Accordingly, before leasing out a roof to a solar power company, consideration should be given to the potential value of those environmental attributes. In the absence of favourable tax treatment, government grants or other forms of incentive, the cost of installing a solar power facility on a roof might make the investment unfeasible. Typically, a building, even one with a large roof, would provide no more than 20% of its energy consumption through rooftop solar panels. Furthermore, at present, the cost of electricity purchased from the grid is still relatively low. However, as the volume of solar power facilities production increases and anticipated developments in technology take hold, it is expected that the cost of installing solar panels will reduce substantially. It may be in the interest of a building owner to hold off signing away the ability to install its own solar panels and to use its own electricity so that it can benefit directly from the carbon credits and renewable energy credits that the project gives rise to.

On the other hand, the time frame during which environmental attributes are likely to become valuable, and the extent to which they become valuable, is uncertain. It may take several years before the markets mature and trading produces substantial benefits.

Also, at the end of the term of the rooftop lease (typically a 20 year period), a building owner may find that the ownership of an intact and functioning solar power facility represents a substantial benefit, particularly when the building owner has not itself been required to contribute to the cost of the installation or maintenance. Solar power facilities will normally have a useful life well in excess of 20 years. The building owner will be able to deal with the environmental attributes in whatever way it wishes at the end of the lease and at the same time will enjoy the benefit of an essentially free form of renewable energy on its roof. Alternatively, the building owner may choose to itself enter into a power purchase agreement with the OPA at the end of the term of the rooftop lease, assuming the FIT Program still exists.

A further benefit flows from the fact that the solar panels will normally reduce energy costs in the building due to the shading effect of the panels. Also, depending on the type of installation, the panels may extend the useful life of a roof by serving as a buffer from the elements.

Some Special Concerns

Assuming a building owner has elected to lease its roof to a solar power company, several concerns must be addressed:

• Non-disturbance agreements, consents or acknowledgements may be needed from mortgagees of the building or from ground landlords.

• The solar equipment may be subject to a personal property security interest or lien in favour of a lender. The rooftop tenant’s lender will seek agreements from the landlord and the owner of the building as well as the mortgagees of the building to the effect that the solar power facility will not be treated as a fixture and will remain the property of the rooftop tenant. The lender will also seek an opportunity to cure defaults of the rooftop tenant to avoid cancellation of the lease. A forbearance commitment and an opportunity to assign or transfer the rooftop lease to the purchaser of the solar power facility may also be required.

• The production, review and approval of detailed engineering drawings, inspection rights, supervision rights and adherence to approved plans as well as all governmental requirements will be important elements of the rooftop lease, particularly with regard to the integrity of the roof and structure of the building.

• Alteration rights will also be contentious. The tenant will need to limit changes to the landlord’s property that would interfere with sunlight, while the landlord will be concerned about alterations that might affect its building.

• Particular attention to maintenance and repair obligations must be taken to ensure that the solar power facility is always maintained properly and safely. Solar power facilities will normally have a life expectancy well beyond the term of the lease and the landlord will be concerned about asset preservation.

•  A sizeable deposit will be needed to protect against damage to the building, and possibly the cost of removing the solar panels and restoring the building at the end of the term.

• There are specific insurance requirements, such as environmental damage and environmental impairment coverages, as well as boiler and machinery insurance. Risk transfer clauses, such as releases and indemnities, must also be specifically tailored.

•  The need to relocate the solar power facility, or components of it, in order to allow the landlord to maintain and repair the roof or to make alterations to the building must be negotiated.

• Snow removal and snow disposal will be a concern.

• Damage and destruction and rebuilding obligations associated with the building and the facility, and various other concerns need to be addressed.

These items represent a small sample of specific concerns related to this type of lease. Daoust Vukovich LLP is able to assist in addressing all of the relevant concerns as it has investigated all leasing aspects of this emerging business opportunity.

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If you’re searching for websites on how to become a solar panel installer, well, you’ve come to the right place. this short article will surely greatly increase what you’ve learned about putting the sun to work for you. If you heard that you could get your hands on state-of-the-art solution which easily enables you to convert solar energy to home electricity at an unbeatably low budget – wouldn’t you want to know how? Keep reading the following article.

Before the new technology came along, plugging your home to an independent solar power supply system was viewed by many as an idealistic, uncertain, and overly costly project, yet for many it remained something to aspire to. Web searches for information on how to become a solar panel installer have become common, which makes it obvious that interest in solar is on the rise, and there are many who want to educate themselves on this fast-growing domain.

The latest news in this field is that the latest technology is now available and is no longer expensive. now anyone can get up and running with a lifetime supply of no-cost clean energy. Harnessing the sun’s energy for personal use is a longstanding alternative, but the problem was that most of us simply couldn’t afford it; there was no choice but to keep on with the status quo and buy all our electricity, while paying these high bills month-by-month.

Prior to digging deeper into the subject of how to become a solar panel installer, It’s important to learn about a recent advancement in this area: an experienced renewable energy expert is willing to share his knowledge on how to build your own solar panels and a complete solar power system, with low-cost and easy-to-find materials and a simple method for assembling them. I also learned that there were a large quantity of people in the u.s. and around the world, who already use solar power to power their entire home courtesy of the sun, and even get paid by the power company for the extra power that they produce. Since it’s both cost-effective and environmentally-friendly, this technology is going to create a much-needed revolution in the way we produce our electricity.

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Due to the growing awareness of societies as well as the increasing prices of fossil fuels, the need for renewable energy especially that harnessed from the most renewable resource of all – the sun – is also rising in equal measure. And with it, career opportunities for individuals with a solar school education is also beginning to rise and shine.

According to most studies, optimistic growth mimicking the 40 percent average annual growth rate of the solar industry fro 2001-2008 will continue for many more years to come. An online company that connects employers and job seekers in the renewable energy industry predicts that the solar sector will generate 2 million jobs by 2020! Now, if you are smart, you will secure the necessary education and experience to avail of these career benefits.

Financial Benefits

Salaries vary according to job position and level of experience as well as type of company in the solar sector. Median annual salaries for entry-level solar power installation training fall at $31,200 while seasoned veterans can go as high as $60,000. Expectedly, solar designers and engineers with vast experience in the industry earn median annual salaries of $83,000. Indeed, your solar school education will be put to good use!

For sales persons, the expected income varies depending on the pay arrangement – either just on commission or on base pay with added commissions. Again, commissions will differ according to sales quota and sales percentages. However, it is common to secure anywhere from 3 percent to 7 percent of sales commissions, which translate to $50,000 to $125,000 a year. Any way you look at it, professionals in the solar industry have better jobs than most especially when one considers that the rest of the world are slashing jobs in the hundreds of thousands.

Career Advancement Benefits

The solar sector allows for great career mobility for its American solar energy professionals. With the right solar school education coupled with the right experience, you can move up the corporate ladder, move up the pay scale, and move up in the world. Thus, you can work and study to advance from entry-level solar panel installer to experienced solar engineer. And that’s only speaking of job positions! Within the solar industry itself, there are many types of subsets that a professional can move around in. To name a few, there are installation companies catering to residential and commercial establishments, manufacturing companies offering products for various uses in various venues as well as research and development companies at the forefront of solar technology.

Environmental Benefits

In solar school, you have come to realize the obvious appeal of solar energy. It is the most renewable resource known to man from which all energy comes from. It is the cleanest because it is free of greenhouse emissions. It requires less maintenance than its fossil-fueled counterparts. It is economically and financially feasible especially in residential and commercial uses.

The point is that while you earn good money in the American solar energy industry, you will also help in the conservation of the environment! There are very few jobs in the world that can combine such a selfish goal and a noble objective, which you must take advantage of now by enrolling yourself in the right solar power installation training course at a solar school.

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In the present day of cutthroat energy scarcity and a call for environmental-friendliness, installing solar panels has come up as an ultimate solution. Solar panels are the best solution to get uninterrupted and free source of electricity with some initial investment. Home solar panels can be installed on the top of your house in a way that catches maximum sun light during the daytime. The more the device is exposed to the sun, the more electricity you get.

Now a days, solar panels can be easily adjusted to receive the sun light or a tracking device can be fitted to trap sun light throughout the day. Home Solar panels are a permanent solution to get free electricity in any part of the world. Sun light is a free source of energy that is trapped by a home solar panel to generate electricity. The tracking system adjusted with the home solar panel continuously rotates the panels in the direction of the sun to ensure uninterrupted source of solar energy.

Home solar panels are a bit costly but they are long-term solution for all your energy needs. Home solar panels are one-time investments that ensure cost effectiveness and environmental-friendly energy supply. Home solar panels must be faced directly to the sun light and all obstacles must be removed from the path of the sun light for optimum result.

Home solar panels, however, give the best result if not put under full sun everyday. Adjusting your home solar panel has become much easier these days. Solar panel mounts are used to install the photovoltaic cells of the home solar panel. These solar panel mounts come in different forms, which hold the home solar panels in right angle and direction to catch the sunrays at the appropriate time and duration.

For the best result, home solar panels must be mounted on the top of your house. Mounting your home solar panels, should be done by an experienced hand. Never try mounting the home solar panels of your own, unless you have the required experience. Enjoy the best out of your home solar panel but ensure proper installation first, else your investment in the solar panel may not pay you back up to your expectations.

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I’m sure we are all wondering what to do. We are concerned about the Climate Crisis, our release of Green House Gases (GHG), our creation of excessive carbon (CO2)? So…what can a person do around their home to make a difference? You can upgrade your home to solar generated electricity. If your home passes the requirements related to the solar site evaluation you could have a solar energy system installed that is now being offered on a rental basis by a number of companies.

The following article provides the step-by-step requirements so that your home can be evaluated for it’s solar energy suitability.

Top considerations U.S. homeowners will need to consider to have a solar energy system installed on no upfront purchase bases, i.e. rental:

* You need to own your home, be the title owner, or essentially be the legal decision maker for the property.
* You must live within an area covered by a utility company offering net-metering.
* You should have at least a one year history of your energy consumption, i.e. energy bills.
* You must have the desire to have a solar energy system installed on your home.

An innovative company has a new strategy to remove all of the barriers to solar generated energy. This solar equipment manufacturer is offering a solar energy unit to American homeowners on a rental basis. No need to purchase a system outright any longer. Unless, you have the means, where-with-all, and wish to maintain the system yourself. If you want to purchase a solar energy system, you can find many new companies stinging up all over the place. The environment needs it. We should all upgrade to solar.

Although, there is another option. A new solar panel rental service is probably not new. But, it still is blowing many people away with the simplicity of the concept. It seemed like this was too good to be true or something. As is the case with innovative and game changing ideas, this new company has such a simple idea. Rent the solar energy system versus having to buy it. Once has to think, “why has this not happened before”.

However, there are some restrictions; not everyone will qualify and there is a long waiting list of potential solar system renters already reserving a system. The good news is the process to get your home evaluated for a solar unit is pretty clear. The following “How-to” guide documents what the average homeowner needs to do to be considered for a solar system installation.

Solar Power Site Evaluation and Energy Audit

The energy audit, solar energy system design, and the installation and construction process start with the home review of the residence performed by one of the company engineers. During this site review, the engineer will take measurements of the lot, home layout, take notes of the roofing materials & condition, the roof orientation to the sun, and assess the present shading factors and those that may build up over time; like the growth of trees or new additions to the property.

The solar installer will communicate to the homeowner in detail the installation time line and what to expect related to the solar system installation. They will also give an overview of the day to day operations of the home solar energy unit once it comes online. If the homeowner has any questions about anything during the site review, the engineer is the one to ask when they are on site.

Home Solar Power Design and Rental Agreements

Once the site-review is completed, the solar engineer will design a system that both fits the home’s layout and meets as much of the homeowners electrical needs as possible. In some cases, a solar energy system may not be suitable for a residential home. Often excessive shade, inappropriate roof angles, or just limited physical space for the solar panels will not allow for a solar power unit installation.

The rented unit may in fact only provide a portion of a particular location’s energy needs. This is an important consideration and highlights the need for energy auditing and overall energy conservation on behalf of the homeowner. The company will still install and rent out the solar energy system but it will not guarantee that the unit will allow the homeowner to self-generate 100% of their energy needs.

The actual system design is presented to the homeowner at the conclusion of the site review. The can then approve of the plan & the general system design. If there is any discrepancy or concerns with the design, the homeowner is encouraged to bring these to the attention of the solar engineers. A proper question and answer session included during the site evaluation.

Solar Panel Rental and the Solar Unit Security Deposit

Following the design approval, the homeowner is asked to pay a security deposit for the solar system installation. This deposit is 100 percent refundable with interest at the end of the rental term. The security deposit covers any damaged caused by homeowner tampering or malicious intent and for homeonwers who have the need to move their system more than once. The security deposit helps cover the cost for the installation crews to move solar systems multiple times.

After collecting the deposit, the engineer will work on the appropriate permits, apply for any utility interconnection agreements, and submit appropriate paperwork to county permitting offices. This whole process may take a few weeks, but at the conclusion, the team of installation technicians will be prepared to have the system installed.

Solar Energy System Installation and Maintenance

Once the permitting paperwork is in order, the installation team will contact the homeowner directly to set the solar system installation date. The installation technicians will then install the solar panels and prepare the unit for final inspection by the local permitting office. Once the local county and utility representatives have inspected the installation, the homeowner is ready to begin taking advantage of flat-rate solar system rental, a more reliable energy service, and a source of 100% clean, solar energy.

Final Considerations to Rent a Home Solar Energy System

* Start collecting your utility bills and file them away. The energy audit provides the best results if a least 2 years of energy consumption is tabulated.

* The renting of a home solar energy system is a new idea. Be sure to do your research.

* Even areas in the northern parts of the Unite States still have adequate exposure to the sun. Don’t write off you location for a solar unit rental because you don’t live in Arizona.

* Reserving a system and getting your site inspection scheduled early is the key to getting your site inspection & evaluation completed.

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Even though solar panels are quite simple, they can still have problems from time to time. Here are some of the areas where they can have problems.

Out of all the ways that we can obtain renewable energy, a solar panel is our best bet for the future. It’s easy and it’s clean at the same time, even though it’s not the perfect method. Solar panels come with their own set of issues, both in the space/efficiency department and in the materials/cost area.

It costs quite a bit to install a solar panel, usually around $7 for each watt that your solar panel will provide. So, if you need 100 watts, it will cost you around $700 to install it. For a regular family, this cost will probably be too high. If you install them in a condo or an apartment complex, the cost increases, so solar panels are not enough.

You should also take into consideration the costs of the maintenance. The way to offset the installation costs is by using government incentives, like tax credits or rebates.

Glass and semiconductors are the main materials used for solar panels, and they are usually considered fragile. You need to maintain them and sometimes you also need to replace them. This happens even if you use Plexiglas shields for your solar panels, since they can still get deteriorated by hail, wind or lighting. When an area is prone to hurricanes, chances are that it’s not very practical to use solar panels, as they get damaged if you leave them up during bad weather.

One other problem you might have with panels is how efficient they are. Their efficiency ranges from 8 to just 15 percent, so you need more of them to produce all the energy you need. They also have problems if they don’t get direct sunlight, as it reduces their power output. Another factor that can cut down on the efficiency is if the house is at a good angle for the best amount of exposure, and they’re usually not. If you get long periods with bad weather, the solar panels become useless.

You can compensate for the efficiency problems by using solar arrays, but they tend to take a lot of space to set up. The latest prototypes of solar panels have efficiency of up to 40%, which should prove revolutionary once they get to the average consumer. You get a solar array by combining a number of different solar panels together, and creating a single big unit.

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If you have been putting off enrolling in a Solar Panel Installation course or getting your Solar Training Certification then now is the time to sign up. Solar Classes are filling up quickly for several reasons:

· Winter can be a very expensive time of year because many people still use natural gas to heat their homes. Since the gas companies know this, they increase their prices during the coldest months. That results in many consumers looking for alternate fuel and power sources and that leads to Solar Panel Installation techs being in high demand.

· The economy is showing some signs of recovery but it still has a long way to go before reaching normality. As a result, many families are looking toward solar power to spend less money and live a bit farther off the grid. So, if you have Solar Training then there is a growing market for your skill set right now.

· There are not enough technicians with Solar Training Certification to meet the markets growing need. Homeowners are interested in anything that will give their property an edge if they are trying to sell and thermal systems add 100% to the value of a home. Another advantage is that it will continue saving the owner money throughout the life of the system.

If you are ready to begin your Solar Classes and get your Solar Training Certification then you should start researching these four class types:

1. Solar Thermal System Design and Installation is the basic class that will instruct contactors about the core information regarding thermal systems and their use. This class will cover the installation of solar powered home appliances like hot water heaters.

2. PV Design and Installation is probably the most important class on the list because it deals with the actual Solar Panel Installation. There are a lot of things to learn about the hardware used to mount the panel as well as connecting it to the electrical system of the home.

3. Battery Sytems are not a required part of Solar Training but it is full of useful information because you can offer the customer a reliable backup system that will allow them to live farther of the grid if they wish to. There is a certain amount of coursework the is required to qualify for the certification exam and the most common way to reach that amount is to take this class along with PV Design and Installation.

4. NABCEP PV Design Prep is not really a Solar Class per se. It is a way to recap all of the things that you have learned in the other classes and make sure that you are ready for the information that will be covered in your solar panel certification exam.






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Utilizing solar garden lights is an inexpensive way of illuminating a backyard garden or an area for relaxing and entertaining. Solar garden lights are simple to install but need to be placed in areas where they can collect the energy from the sun for lighting during the night. Since solar lighting does not require any wiring to be placed and work off the suns rays an electrical outlet is not needed.

When you install solar lights as pathway lights remember to place them where they will receive the best sunlight. If these lights are fully contained and one piece just insert them into the ground and place them an equal distance apart from each other; they can also be place in a zig-zag pattern on either side of a path. Most solar light fixtures need to have at least eight hours of direct sunlight; some may require more time in order to give off light all night long.

Some of the advantages to solar powered lights are the fact they are considered environmentally friendly because they do not require any electricity. They are simple to install since there is no need for wiring to be buried, they are inexpensive and if you place one in an area that does not need to be lit, you can move it around to try somewhere else. The only upkeep that is required is the occasional replacement of the rechargeable battery. The light-emitting diode (LED) bulbs do not need replacing since they rarely stop working.  

Solar patio lights are reasonably priced which makes them a good choice for lighting patio covers, gardens, and different sections of a landscape. They are easy to install, energy efficient, and give you ways to light-up a deck or entertainment area. You can highlight your favorite flower garden, an outdoor decoration or an unusually shaped tree or hedge. Solar lights are available in many different shapes and sizes; there are some lights that are shaped as birds, insects, and flowers that are mounted on poles and periodically change colors. There are others that mound on larger poles and resemble lanterns for lighting up a pathway through and around your bushes and trees to get from area to another. Solar spotlights are used for highlighting a specific item in the garden or area of your landscaping. They are much brighter than pathway lights, accent lights, or patio lights. If you have an area of your landscape or garden that does not get the required amount of sunlight during the day many of these spotlights are available with a solar panel that is separated from the actual light but is attached by a long wire. This gives you the opportunity to place the solar panel in the sun and the light itself on the object you want to highlight. Security solar lights are also classified as spotlights because of the size and brightness but are only activated by someone or something moving near them.   

The holidays are now here and it is time to seek out some solar string lighting and solar tube lighting for decorating. These string lights and tube lights that you hang on your house can stay up all year for lighting up your house since they do not require any electricity. You can even find solar displays that stand on your front lawn.  

Solar garden lights are just as durable as other types of outdoor lighting because they are made of the same materials. They can be found in the regular weather resistant plastic, aluminum, copper, or bronze. You can hang them, insert into the ground, mount them or even build them into your deck and railing. They are easy to install and very inexpensive to operate. So have a good time deciding on how to lighten up your gardens and landscaping.  

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Sizing Common Solar Charge Controllers

All renewable energy (RE) systems with batteries should include a charge controller. In this article we’ll principally be referring to solar charge controllers . Charge controllers prevent battery overcharging and also prevent the batteries from sending their charge back through the system to the charging source (i.e., the solar panels). Think of a solar charge controller as a battery nurse—its job is to monitor the battery bank, feeding it what it needs and checking its vital signs. Since a solar controller does its work in line between the solar panel array and the batteries, it would make sense that its selection and sizing would be influenced by those components. And that’s exactly the case.

Voltage and amperage (or current) are the parameters we use in solar charge controller sizing. The solar  controller must be capable of accepting the voltage and current produced by the DC source (usually solar panels) and delivering the proper voltage and current to the batteries. This situation might make you think that the DC source, charge controller and batteries must all share a common voltage. While that is one system design strategy used in many installations, it’s not the only one. More on the alternatives in another article. For now, it’s one voltage for everyone!

Technically speaking, the DC source must always have a higher operating voltage than the battery bank in order for current to flow from one to the other. A handy way to remember this fact is the statement, “curent flows downhill.” For the purpose of this discussion, we’ll use nominal voltage which means common battery voltages. Nominal voltage in this sense is synonymous with battery voltage. Since batteries (where they are used) are in many ways the heart of an RE system, we can call the bank’s voltage the system voltage. The system voltage selected for any given installation is usually, though not always, determined by the battery bank required by the application; the inverter, if one is used, will also influence the choice of system voltage.

Sizing comes down to this: there’s the quick method, which will very likely give an acceptable, if perhaps oversized result, but won’t describe the why here we’ll just show you the steps.

Short Method for Sizing Solar Charge Controllers

  1. For PWM and PWM shunt solar controllers, select one that is rated at your system voltage (same nominal voltage all the way through the system).
  2. Divide solar panel array total wattage by system voltage.
  3. Add 20% as a safety margin (i.e., (result of Step 2) X 1.2).
  4. Select a solar controller rated at or above the result of Step 3.

Example of the Short Method

  1. Two 125W, 12V nominal modules. System is 250 W, 12 Volt nominal. Solar charge controller will be 12 Volts.
  2. 250 ÷ 12 = 20.83
  3. 20.83 * 1.2 = 24.996 amps
  4. You could use a Xantrex C35, a 35 amp solar charge controller; or a Morningstar Prostar 30, a 30 amp solar charge controller , for example. Any 12 volt solar controller greater than 25 amps will work.

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