Reduce your utility bills with Solar PV Photovoltaic

Solar energy is free. Why not reduce your utility bills with solar power through Solar Photovoltaic components? We specially selected solar PV products from world leading solar manufacturers that meet the highest standards in quality and reliability. All products we sell have best guaranty conditions for solar pv products globally.

Whether you look for solar photovoltaic components or complete tailor made solar kits, we have it all in stock. If you need any assistance fulfilling your dream to become complete energy independent contact us.

Solar Kits with Battery Storage

Solar-Kits with Battery Storage

Grid Tied Solar Kits and Packages

Solar-Kits-On-Grid SMA, grid tied solar kits, solar packages

Off-Grid Solar Kits and Packages

Off-Grid Solar PV Kits and Packages

Solar PV Battery Storage

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Solar Inverters

grid-tied and off-grid Solar pv inverters, solar inverters

Solar Panels

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Battery Inverters and Inverter/Chargers

Solar Battery Inverters and Inverter-chargers

Solar Water Heaters

Solar PV Water Heating MY PV

Solar PV Mounting Sets

Solar-Mounting-and racking

Solar Cables and Connectors

solar-photovoltaic-pv-solar-accessories-and-mounting

Solar Charge Controllers

Solar charge controllers, solar regulators

Solar Monitoring

solar monitoring

A Quick Overview Of Solar Photovoltaic

Solar Panels: Harvesting the Energy from our Sun

Virtually unlimited power is available from our nearest star, the Sun. In an one hour, our planet receives more energy from the sun than the entire world uses during an entire year. Electricity producing solar panels have only been around for the last 60 years, yet they have completely transformed how we harness solar energy.

The photovoltaic effect  by Alexandre-Edmond Becquerel

In 1839, a nineteen year-old French physicist named Alexandre-Edmond Becquerel discovered the operating principle of the solar cell, known as the solar photovoltaic effect. It wasn’t until 1876 that this effect materialized into a viable method of producing electricity with the work of William Grylls Adams. He discovered that by illuminating a junction between selenium and platinum, a photovoltaic effect occurs; electricity could now be produced without moving parts.

The first solar cell

Revolutionary as they may have been, the selenium solar cells were not efficient enough to power electrical equipment. That ability occurred in 1953 when a Bell Laboratories employee Gerald Pearson had the bright idea of making a solar cell with silicon instead of selenium. The New York Times heralded the discovery as “The beginning of a new era, leading eventually to the realization of harnessing the almost limitless energy of the sun for the uses of civilization”.

Vanguard I – the oldest artificial satellite

Just in time for the space race, the first solar panels made their debut in the satellite industry. Vanguard I, the first solar-powered satellite celebrated its half a century birthday this year. This set the mileage record and holds the title of being the oldest artificial satellite still in orbit.

The solar photovoltaic modules

The first solar modules were only efficient enough for space applications, where the Sun’s radiation is much stronger. Eventually satellite research paved the way for Earth-based technology. The 1990’s were pivotal years for photovoltaic technology. Innovations in solar cells allowed for greater efficiency while lowering the cost of production. Germany and Japan led the way with long-term solar power incentive programs helping lower the cost to the public, and spurring the growth of a robust Photovoltaic industry in both countries.

California Leads USA, Germany lead EU ad China leads the world 

In 2006, California made a major long-term commitment to solar power by passing the California Solar Initiative, a ten-year incentive program with the goal of installing 3,000 megawatts of solar panels on the equivalent of one million rooftops. California leads the nation in solar panel installations, as it currently has more photovoltaic systems installed than any other state.

Incredible boom in solar energy

This incredible boom has taken place mostly due to California’s Renewable Portfolio Standard, which requires that 20 percent of the state’s electricity come from renewable resources by 2010. In 2008 the state decided that it was not moving fast enough in meeting these goals and enacted a feed-in tariff, requiring utility companies to buy back excess power produced by homeowner’s and private photovoltaic installations. In the same year, the state also raised the Renewable Portfolio Standard to 33 percent by 2020, greatly helping spur growth in the renewable energy industry.

Solar power generation in the European Union

Overall in 2018, renewable generated 40% of Europe’s electricity for the first time despite being only a rise of 0.2% owing to the huge growth in wind generation being almost completely offset by the lowest hydro electricity generation in a decade. Geographically, the majority of that growth was in Germany and the UK alone with progress in the deployment of wind, solar and biomass in the UK, Germany and Denmark in particular seeing these technologies overtake generation from coal for the first time following a 12% increase in 2017.

Renewable electricity mix

Wind, solar and biomass grew to 20.9% of the EU electricity mix. This is up from just 9.7% in 2010, and represents an average growth of 1.7 percentage points per year. If this rate continued, then it is just sufficient for total renewable to hit 50% of the EU electricity mix by 2030. However, the research points out that this growth has become more uneven, with Germany and the UK alone contributing to 56% of the growth in renewable over the last three years.

How Solar Panels work?

Photovoltaic solar modules are composed of multiple, interconnected solar cells, which effectively trap photon energy between layers of silicon wafers. Negatively charged electrons are then knocked loose from their atoms, allowing them to flow freely through the semiconductors. Separate diodes, and P-N junctions prevent reverse currents and reduce loss of power on partially shaded panels.

Since the flow of electrical current is going in one direction, like a battery, the electricity generated is called direct current (DC). Sunlight conversion rates are typically in the 5 to 18 percent range, with some laboratory experiments reaching efficiencies as high as 30 percent. Future possibilities include the development of multi-junction solar cells that are capable of harnessing a wider bandwidth of usable light. We are still considered to be in the early stages of solar cell technology.

Solar Photovoltaic Components

Solar PV Modules

Photovoltaic solar panels are the main building block in a solar power system. Since each solar module produces a limited amount of power, installations usually consist of multiple panels, called an array. The array produces DC (direct current), which can be stored in batteries or instantly converted into AC (alternating current) required by conventional appliances.

Solar Inverters

Equipment that converts the power from DC to AC is known as a solar inverter, and they come in a few varieties, modified sine wave or pure sine wave. They are further classified based on which type of system it is to be used in, whether it is off-grid or grid interconnected. Recently the innovation of micro inverters has greatly simplified installations, and makes it easy to add on panels to an installation. Each solar module is paired with its own micro inverter, which then converts the power directly at the panel.

Charge Controllers or Charge Regulators

For off grid installations the use of a charge controller is necessary to properly manage the power harvest, charge the batteries, and prevent overcharging.

The greatest innovation in charge controllers would have to be the relatively new feature called maximum power point tracking (MPPT). This innovative method of charging batteries constantly monitors peak power voltage from the array and input voltage on the batteries adjusting amperage to compensate for the fluctuations. This provides the most efficient means to manage the power harvest. The function of MPPT charge controllers is analogous to the transmission of a car, keeping your charging system in the “right gear”.

Other solar photovoltaic components

Other components of the solar system would include the wiring and mounting hardware, while some installations use a tracker that changes its tilt angle and direction throughout the day.

Types of Solar Panels

Solar panels are classified into three classes: mono-crystalline (single crystal), poly-crystalline (multiple crystals), or amorphous silicon. Mono-crystalline is indicative of the continuous and unbroken sample of silicon in which the cell is manufactured from. This method uses very pure silicon grown in a complex growth process, and then sliced into wafers that compose the individual cells. This was the first method used to manufacture solar cells, and are still highly regarded for their efficiency ratios.

Poly and Mono Solar pv

Poly-crystalline panels are composed of many crystallites of varying size and orientation. These multi-crystalline panels are generally less expensive and slightly less efficient than mono-crystalline modules, yet lately the difference in efficiency is very small. Like their mono-crystalline counterpart, the cells are also cut into wafers that make up the individual cells of a solar panel.

Amorphous solar panels use the non-crystalline, allotropic form of silicon, in which a thin layer of this silicon substrate is applied to the back of a plate of glass. These panels are much cheaper and less energy efficient, yet they are more versatile in how they can be used. For example, amorphous solar panels can be manufactured into long sheets of roofing material. Thin Film solar panels also fall into the amorphous category. This type of cells can be mounted on a flexible backing, making them more suited for mobile applications.

Solar PV Lifetime

Each of the solar panel types is estimated to last at least twenty-five years. Instead of stopping production completely, electricity production will decline a little, gradually, over decades. The longevity of a solar panel refers to the number of years before the unit starts producing only 80 percent of its original power rating. The industry standard for warranties is 20 to 25 years, although it is not uncommon for panels to produce adequate power for over 30 years.

Off Grid Solar versus Grid tied Solar

Solar panels are used extensively in rural areas, where access to the grid is non-existent or inaccessible. These installations are called off grid (or independent, stand-alone) solar power systems,. Off-grid solar pv systems require the use of batteries to store the energy for use at night or on long stretches of overcast weather. The energy stored in the batteries leaves the batteries as DC electricity which can power DC appliances (as in RV’s) or be converted to alternating current (AC) for use with conventional appliances. Much like running your own mini utility company, this method gives you full independence from the national grid.

You can eliminate the cost of batteries by going with a system that connects right into your home’s main junction box and use the grid as your power source at night or on long stretches of inclement weather. These installations are known as grid-tied systems.

Selling back to the grid

This version of solar system enables you to sell any excess power you produce back to the utility companies who have chosen to support “net metering”. Once you are signed up on a net metering program, your utility company will have a smart meter installed known as a Time of Use Meter, which will actually run backwards when you are producing excess power. It is wise to keep in mind that Grid tied systems without a battery backup, are only functional when the grid is operational. Due to anti-islanding features on grid tied inverters, which protect utility workers from working on a live line, grid-tied systems without a battery back up will not continue to produce power during a power outage regardless of whether you have sunshine or not.

Using a solar inverter

Since solar panels produce direct current, they must be coupled with a solar inverter to convert the energy from DC to alternating current. In a grid tied system this can be done by a central solar inverter. The other option is that each solar panel is outfitted with its own microinverter. Once the power is converted to AC and its phase is synchronized with that of the grid, it is then tied in to your main junction box. This of course is ultimately interconnected to the national grid.

Solar Photovoltaic knowledge

Our solar and energy storage experts are here for you, always keeping you up to date. Here you can find out everything about solar energy systems, energy storage systems, electric charging stations and solar communities.

  • Training and webinars
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  • Live-Chat with the Solaranna experts

Our solar energy products – more power and longer warranties

We offer photovoltaic components and storage solutions with the highest quality standards. All our products include, through our trading partners, long product and performance guarantees. All the products offered in our PV store – such as energy storage systems, solar batteries, battery packages, solar panels and inverters – can be used to retrofit or build new PV systems. If we cover your geographical area then from the first inspection to the finished solar energy system, we provide installers and homeowners with everything they need.

What we can do for you as a solar photovoltaic reseller and distributor?

As a retailer and photovoltaic company, we work closely with manufacturing partners. We support them and pass-on the desired product storage size, installation capabilities and compatibility as expressed by the solar installers. As a result,  the  installers from our database have become increasingly more pleased over a simpler and easier installation process of all components in the solar energy system.

FAQ Solar PV Photovoltaic

Can I install my own solar pv system?

Many would tell you no .. BUT .. Yes, of course you can. Over half of our customers install and maintain their own solar power systems. Some of them hire extra help for part of the installation. Most have an electrician connect the wires to your home electrical panel.

If you commit to the research, there’s nothing stopping you from completing the entire installation yourself. Of course, if you get stuck, our experienced support team is here to lend advice and get you back on track. In case you opt for a certified installer just contact us.

Can I self-install an off-grid solar power system?

Of course you can! .. and by the way, you should.  Off-grid solar power is for independent-minded people who want no restrictions on where they choose to live. Off-grid solar power allows you to buy undeveloped land that you can afford more easily. Where other people wouldn’t have power, you will have clean, effective solar energy. Combining your solar pv system with a battery storage, off-grid heating/cooling and DC appliances you can achieve full energy independence easily.

Can I self-install a grid-tied solar pv system?

Many of our grid-tied customers do. Grid-tied solar—for homes that are already plugged into utility power—is less complex to install than off-grid and can be easily expanded.

Because you are connecting into the utility grid, your installation may be more regulated. Check out the UK Building Code and the USA regulations, legislation, and policies in your state (USA) firts. Plan to have an electrician or licensed contractor to do the final hook-up to the grid .

What Is the installation cost for solar panels?

How Much do Solar Panels Cost?

Solar panel cost varies depending on size and type of the system. Solar tiles are generally more expensive than the traditional panels. The prices, though, have been falling in recent years, due to the technological advances.

In the table below you can see the average prices of solar photovoltaic systems and the estimated cost and return. This is just an estimate since solar panels cost will differ according to quality, type, and size.

Roof Space (square meter) System Size (kW) Estimated Cost (£) First Year Return (£) Profit After 20 Years (£)
8 m2 1 kW 1,500-3,000£ 185£ 640£
14 m2 2 kW 3,000-4,000£ 369£ 3,800£
21 m2 3 kW 4,000-6,000£ 534£ 5,630£
28 m2 4 kW 6,000-8,000£ 700£ 6,750£

The average household needs a solar panel to provide around 3kW. Solar panel cost will range from between £4000 and  £6000 and will cover around 21 square meters of your roof. The more electricity your system can generate, the higher the initial installation cost, but the savings will also be higher in the long term.

estimated-installation-cost-and-profit-after-20-years-solar-panel-capacity

Solar panels cost is not cheap but is getting there. Nevertheless, after you have covered the solar panel installation cost, you start saving and making money. Continue reading to find out on how to regenerate your investment from solar panels cost.

How much roof space do I need for my solar panels?

On average, you need 100 square feet (approximately 9.5 sqm) of space to generate 1 kW of solar energy. Considering that a typical household uses around 40-50 kilowatts of electricity per day, it is safe to assume that to supply all of your electricity or heating needs with solar energy, you may need up to 500 square feet (approximately 46 sqm) of roof space. However, already harnessing 20 kW a day from solar energy systems cuts the energy bill in half.

Do solar panels work in bad weather?

Solar PV panels can collect solar energy all throughout the year, whether it is spring, summer, autumn or even winter. However, the conversion of solar energy from solar panels is reduced when there is no direct sun exposure. This means that during cloudy days, solar panels work at 50% of their total capacity and on extremely cloudy days, this number may drop to 10%.

Do solar panels work in bad weather?

Solar PV panels can collect solar energy all throughout the year, whether it is spring, summer, autumn or even winter. However, the conversion of solar energy from solar panels is reduced when there is no direct sun exposure. This means that during cloudy days, solar panels work at 50% of their total capacity and on extremely cloudy days, this number may drop to 10%.

Are solar panels very expensive?

While the use of solar energy has been growing exponentially in the last twenty years, the prices of PV cells have been dropping. Currently, the price of each PV cell is 99% lower than it was in 1976. Moreover, because solar energy is such an environmentally friendly solution, many governments are offering grants and incentives for the installation of panels. Based on current average electricity costs, and assuming modest inflation of energy prices, the payback period should be between 7 and 10 years.

What is the average lifespan of a solar panel?

Solar panels installed today will produce a reasonable amount of solar energy for about 30 to 40 years, without the need of replacing them. Three our our main suppliers Sunpower, LG and Panasonic are so confident that give 25 years of product guarantee for their solar panels.

Does a solar panel require maintenance?

Great news! Solar panels require very little maintenance. You should always make sure they are not blocked with dirt from trees or any other substances that could keep the sun away. Panels are generally positioned with some angling, rain will always help to wash the dirt away. Moreover, solar panels should last for around 25 years, but the inverter might need to be changed before..

Can I store the electricity generated by my PV system?

Yes you can. In majority of the cases the electricity generated is either used during the day in the house, or it is automatically exported back to your electricity provider who will pay you for this. In past years battery storage and energy storage products faced a significant drop in price. Both Li-Ion batteries and the conventional lead acid batteries are more an more affordable for households; therefore allows homeowners to store the excess energy for a later use. The battery storage systems available have a lifespan of 10-20 years.