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Doubling of the total attendance (and more than doubled the foreign ones) for K.EY, the Italian event for renewable energies and energy efficiency, a point of reference in Italy, Africa and the Mediterranean basin, which was also attended by Raptech with the presence of our CEO and Cofounder Marco Berliocchi.

The event was held for the first time without the contemporaneity of Ecomondo, K.EY. The Energy Transition Expo has exceeded expectations, gathering numerous adhesions at national, European and non-European level and confirming not only how Made in Italy is at the forefront in this sector, but also how our country is highly attractive for foreign producers.

More than 600 brands were present at the fair, of which around 28% were foreign, with the main market leaders in all sectors and a significant expansion of the supply chains. Over 300 foreign buyers present – from North Africa, Sub-Saharan Africa, Europe, Eastern Europe, the Balkans, Asia, the Middle East and Latin America – thanks to the support of the Ministry of Foreign Affairs and International Cooperation and the ICE Agency, with over 23 International associations.

Thanks to the very rich schedule of guests, debates and exhibitors, K.EY was a training and professional updating opportunity for everyone but also an opportunity to stay constantly informed on the latest technologies, legislative aspects, development trends, new emerging markets and on all the news from the world of energy and renewables.

Various appointments of ForumTech 2023, organized by Italia Solare at the same time as K.EY, were dedicated to updates on the technological side. It ranged from a discussion on the configurations of storage systems in the various market segments to the news regarding panel cleaning, the use of drones, components, digital tools and advanced analytics, to the analysis of the life cycle of photovoltaic modules.

K.EY then gave space to products and technologies in the solar, photovoltaic and storage sectors at SEC, Solar Exhibition and Conference, for wind energy at WEM, Wind Expo for Med and for technologies and projects for the production and storage of hydrogen at Hye, energy efficiency and storage in the industrial and building sectors, with technologies and services available to companies to optimize their energy consumption and reduce their carbon footprint in the transversal area of EFFI – Energy Efficiency Expo. And again, eME, e-Mobility Expo and Sustainable City dedicated respectively to electric and sustainable mobility, from recharging infrastructures to interconnected mobility services, and to the smart city. And in the very current Sustainable Building District, focus on sustainable construction, in collaboration with the main partner Green Building Council Italia.

Several appointments were dedicated to the Energy Community revolution, including a meeting to explore the role that ESCos (Energy Service Companies) can play in the promotion, development, financing and management phases of the various distributed generation initiatives and an overview of the on the regulatory aspects, which have changed rapidly in recent years and months as Italy has implemented the reference EU directives and the first concrete projects have been developed.

Finally, EdizioniAmbiente was entrusted with the care of Salotto Solare, a moment of discussion on different ways of dealing with energy in 5 stages with as many book presentations. On Wednesday 22 Marco Gisotti presented Ecovisioni and Livio De Santoli Energy for the people. Thursday 23 Stefano Belletti presented Green & Digital and Gianluca Ruggieri What is the ecological transition. Finally, on Friday 24th Gianni Silvestrini presented his What is renewable energy, winner of the 2022 Demetra Prize for environmental literature.

CONFERENCES AND SUMMITS, NETWORKING NETWORK

K.EY has fostered constant communication with the institutions and by connecting the key players in the sector with each other, thanks to a rich schedule of international events and conferences defined by the K.EY Technical-Scientific Committee chaired by prof. Gianni Silvestrini.

For the first time, the K.EY ENERGY SUMMIT, General States of Renewable Sources, was held, a moment of public discussion promoted by ANEV, Elettricità Futura, ITALIA SOLARE, Italian Biogas Consortium, Federidroelettrica, ANIE Rinnovabili, Assoidroelettrica and FREE Coordination for submit organic and coordinated proposals to the Government, which received the availability of the Deputy Minister of MASE Vannia Gava.

A second, but no less important novelty was represented by the presentation of the 1st Report on the production geography of renewables in Italy, promoted and created by the Symbola Foundation and the Italian Exhibition Group, in collaboration with the main trade associations of the sector, to reconstruct , together with the most important Italian players on the market, the characteristics and territorial and sectoral distribution of companies in the renewable energy supply chain.

In conjunction with K.EY also The European Exhibition of Electrical power System, the European event dedicated to the entire ecosystem of electrical generation, distribution, safety and automation, organized by Italian Exhibition Group in collaboration with the Distributed Generation, Motors, Components Association , Generating Sets federated ANIMA Confindustria.

K.EY will return to the Italian Exhibition Group fair in Rimini from 28 February to 1 March 2024. For the world of sustainability, next IEG appointments at CDEPE (Chengdu, China, 30 March – 1 April), Ecomondo Mexico (Guadalajara, Mexico, 26 April – 28 April) and then with Ecomondo, from 7 to 10 November next, at the Rimini Fair.

Over the coming decades, digital technologies will make energy systems around the world more connected, intelligent, efficient, reliable and sustainable. Dramatic advances in data, analytics and connectivity are enabling a range of new digital applications such as smart appliances, shared mobility and the Internet of Things. Future digitized energy systems may be able to identify who needs energy and deliver it at the right time, in the right place and at the lowest cost. But doing everything right will not be easy.

Some of the most significant obstacles encountered by companies in the sector are:

• Geographically dispersed energy data: you miss the opportunity to make meaningful use of it.

• Lack of an integrated platform: prevents industry players from making informed decisions, leaving data isolated and unverified in the marketplace.

• Inability to track resources: From historical patterns to supply and demand trends, tracking is necessary to optimize clean energy delivery.

• Lack of clear and traceable targets: the absence of a roadmap towards the adoption of new technologies and an action plan impedes progress towards energy efficiency.

This is what emerges from the first Raptech Observatory on Digitization in Energy.

Raptech (https://www.raptech.it/) has been operating in the Renewable Energy market for over 15 years, offering technology, monitoring and asset management systems for photovoltaic plants.

The Observatory is the result of Raptech’s particular position in the Italian market, with a large presence and share of customers in the overall production of photovoltaic plants in Italy, with a focus on larger plants.

Thanks to the Digital Transformation in the Energy sector, it is possible to increase the efficiency in the management of photovoltaic assets. In fact, asset management can require a series of repetitive operations which, if automated, can lead to an astonishing improvement both in terms of time and quality of results.

In this regard, Raptech has long since launched the proprietary R-Cloud platform on the market, a Web tool for data collection and aggregation, which performs daily readings of the “load curve” and of all the registers available via GSE modems, with values of production on a quarter of an hour basis, automatic comparison with the Enel Distribuzione Portal, automatic control of GSE payments and energy sales data.

Equivalent hours of use means the ratio between production and power (kWh/kW) and the Research shows that plants that use R-Cloud have on average 25% more equivalent hours of use, and therefore a productivity higher than those of the same power class nationwide. The data emerges from the comparison between the Raptech Observatory on its customers and the overall Italian data of the GSE Solar Photovoltaic Statistical Report on equivalent hours.

“The analysis of the data in our possession – explains Marco Berliocchi, CEO and Cofounder of Raptech – has allowed us to quantify the real benefit deriving from the use of IT tools in terms of greater energy production. In fact, the plants we manage have shown a substantial increase in productivity and an increase in revenues deriving from incentives and from the sale of energy.”

To keep up with the times, and to meet customers and stakeholders, Raptech will be present on March 22nd in Rimini with the CEO and Cofounder Marco Berliocchi: write to us to book an appointment.

In 2030, 72% of electricity production will have to come from renewable sources. K.EY takes up the challenge and, in its first edition from 22 to 24 March 2023 in Rimini, will take over from Key Energy, which is turning into an independent event, with a new format, a new positioning and a new period of ‘year.

K.EY offers a comprehensive showcase for the technology, integrated solutions and services that can drive the energy transition towards a carbon neutral economy. It is also a cultural, scientific and technical hub and a community catalyst capable of connecting stakeholders, actors and leaders in the renewable energy sector, giving them the opportunity to exchange ideas: not only a business platform, but also and above all a opportunities for training and information on the subject of energy and on accelerating the energy transition process already underway.

[from our latest press release]

In the first 9 months of 2022, Italian photovoltaics recorded record numbers: there are 12,000 new plants, for a total of 1.6 GW, a liveliness not seen since 2013, at the time of the last Energy Bill. This was revealed by the latest statistical Outlook of the GSE (InFotovoltaico), which also states that as of 30 September 1,140,000 plants are in operation, + 12% compared to the end of 2021. Just under half of the plants belong to the industrial sector (with 51% of total installed power), followed by the tertiary sector (20%), residential (18%) and agriculture (11%). 35% of the systems are on the ground (with 15,800 hectares of occupied area) while 65% are on buildings, roofs, roofing, etc…

The growth that follows eight years of relative stability in the sector affects all plant size classes, all regions and the main cities of the country: among these, Piedmont is the region that produces the most electricity from photovoltaics, followed by Lombardy and Veneto , confirms the research of the Association of Consumers and Producers of Renewable Energy (Aceper).

Among the provinces, Lecce stands out with a performance of 1,100 hours of operation, for an average of 4 hours/day.

However, there are also specific challenges and problems, especially for owners of photovoltaic systems and operators in the sector: this is revealed by a research by Raptech (https://www.raptech.it/), a company operating in the Renewable Energy market for over 15 years , offering technology, IT technical support, monitoring and asset management systems for plants.

Thanks to the digital transformation of energy, it is possible to increase the efficiency in the management of photovoltaic assets. Asset management can require a series of repetitive operations which, if automated, can lead to a staggering improvement both in terms of time and quality of results. Raptech research has measured a reduction in the time spent ranging from 80% to 95% for this type of activity. This greater efficiency also translates into an almost total reduction in cash imbalances due to problems with the disbursement of contributions or the sale of energy. For this reason, the company launched Remote Meter Reading on the market some time ago, a web tool based on the proprietary R-Cloud platform, with online access to all data and the possibility of downloading it in standard format, which performs daily readings of the “load curve” and all the registers available via the GSE modems, with production values on a quarter-hour basis, automatic comparison with the Enel Distribuzione portal and automatic control of GSE payments. “The digitization of energy – confirms Marco Berliocchi, CEO and Cofounder of Raptech – is an important step towards the energy transition as well as an indispensable tool for increasing the efficiency of manufacturing companies”.

Raptech is one of the partners of Trust-PV, a four-year research project funded with over 12 million euros by the European Union’s Horizon 2020 programme. TRUST-PV will improve the performance and reliability of PV systems by supporting the development of O&M-compatible and grid-friendly PV components and solutions across broad portfolios of distributed and utility-scale systems.

As part of the project, Raptech participated in Solar Quality Summit Europe in Barcelona (January 24-25), which brought together all stakeholders in solar quality management, including investors, service providers and technology providers, to provide them an overview of the latest market developments, sharing best practices in EPC, O&M and Asset Management, exploring challenges, and discovering emerging technologies and trends.

Below we report information, data and considerations that emerged during the two days of conferences.

Quality vs quantity: overcoming the binary approach

The European market is booming, it is a mature market that requires quality and such rapid growth certainly represents a challenge. Quality should not be seen in a Manichaean and binary context in contrast to “quantity”.

Let’s see how.

Not only technical skills, not only engineers but also financial and digital skills are needed to contribute to the energy transition, but there is a basic shortage to counter which we also need people from other sectors without solar experience to be trained within companies .

As far as the issue of component shortage is concerned, it is clear that today some components have to wait up to a year; a large percentage of module production in China has been delayed; The COVID problem has delayed many projects; The US has banned Huawei, the largest inverter maker, and that’s another problem. Careful procurement management has therefore become crucial from the point of view of development and construction.

All the players agree that making quality has a low marginal cost. The important thing is to look at the solar ecosystem in a complete way and not just at a small part of the value chain, in doing so the quality will not present such high costs.

The European markets with the highest potential

Thanks to the data from Solar Power Europe, it was also possible to get an overview of the growth potential of the various European countries.

With 41.4 GW installed in the EU in 2022, this marks the best solar year in European history so far, 47% more than the 28.1 GW installed in 2021, when an old record was broken ten years old.

As in the previous year, Germany is still the largest solar market in Europe in 2022. Among the top 10 are 2 newcomers (Portugal and Sweden).

In 2022, the EU’s solar power generation park increased by 25% to 208.9 GW, up from 167.5 GW in 2021.

When it comes to solar energy per capita, the Netherlands leads Europe ahead of Germany and Denmark.

The next 4 years, up to 2026, will see further strong growth, with an annual solar market of almost 54 GW already in 2023 and reaching 85 GW in 2026 (EU27 Annual solar PV Market Scenarios 2023-2026).

The greatest growth in the coming years will be seen in emerging markets in the EU as Germany reaches double-digit GW levels for the first time in 2023 and nearly doubles installations to around 20 GW in 2026.

Large-scale solar will remain the main driver for solar in Spain, but the rooftop segment will also have a sizeable market share.

The Italian solar market is expanding mainly thanks to tax incentives for the rooftop segment, which is expected to be the main basis for solar growth.

While complicated regulations have slowed solar in France, several legislative measures are expected to lead to double-digit annual growth rates over the next few years.

Three quarters of EU member states will have already met the 2030 National Energy Plan for the Climate (NECP) solar target by 2025. Total EU solar energy is projected to rise from 209 GW installed today at 399 GW in 2025 and 920 GW in 2030.

The market for clean technologies by 2030 will be worth 650 billion euros (IEA).

Exxon - raptech.it

Exxon analysts accurately predicted global warming from fossil fuel use in the 1970s, but have publicly denied the possibility of global warming.

In the 1970s, ExxonMobil scientists outfitted one of the company’s supertankers with state-of-the-art equipment to measure carbon dioxide in the ocean and in the air, an early example of the massive research, according to an article recently published by The Guardian. research on the oil giant’s climate. According to the British tabloid, oil giant Exxon privately “correctly and cleverly predicted global warming” and then spent decades publicly brushing aside that result to protect its core business.

ExxonMobil’s blatant hypocrisy about man-made climate change was exposed in 2015 by investigative reporters who obtained internal company documents. These materials demonstrated that the company was aware of global warming and its causes as early as 1977.

The research of Supran, Ramstorff and Oreskes

Experts led by Jeffrey Supran, a historian of science at Harvard University, found that ExxonMobil not only knew that fossil fuels were driving climate change decades ago, but also made some of the most accurate global warming predictions and consistent with the times.

While previous reports have focused on textual evidence of the company’s knowledge, Supran and two of his co-authors, University of Potsdam climatologist Stefan Ramstorff and Harvard science historian Naomi Oreskes, presented the first quantitative review of early ExxonMobil’s numerical and graphical data on climatology.

The new study by Supran and his colleagues began a few years ago after Ramstorff tweeted a new graph of global temperature rise over the past few decades, superimposed on ExxonMobil’s 1982 climate forecast graph.

The question of Alexandria Ocasio-Cortez

The similarity between Exxon’s climate projections and what actually happened is so striking that Congresswoman Alexandria Ocasio-Cortez used Ramstorff’s work to question Martin Hoffert, a climate scientist who served as a consultant for ExxonMobil, during a confrontation in the House in 2019. Hoffert later noted that he and his colleagues were “remarkable scientists” who accurately predicted the trajectory of anthropogenic climate change.

Hoffert is now professor emeritus of physics at NYU, but continues to talk about his experience with ExxonMobil, as do many other scientists who have done climate research for the company since the 1970s.

Martin Offert’s work for Exxon

Supran and colleagues frequently refer to the work of Hoffert and colleagues in their new study, which is based on a comprehensive analysis of 32 internal documents created by ExxonMobil scientists between 1977 and 2002, as well as 72 peer-reviewed scientific publications from part of ExxonMobil scientists between 1982 and 2014.

The findings show ExxonMobil’s mostly accurate predictions of global average surface temperatures and also show that the company “correctly dismissed the prospect of an oncoming ice age, accurately predicted when human-induced global warming would be detected by the first time and reasonably estimated the carbon balance to keep warming below 2°C.”

The researchers also found that climate projections presented during a 1982 internal briefing titled “The Greenhouse Effect of CO2” were later widely disseminated among ExxonMobil management and labeled “confidential information for authorized corporate use only.”

The true purpose of Exxon

Supran notes that Exxon has been privately clear about the purpose of its involvement in the climate study, which was essentially a combination of intelligence gathering and legitimacy. This information “has been incorporated into a broader corporate strategy to manage the company’s challenges to the potential threat of global warming to its business interests.” Scientist is convinced that when ExxonMobil, along with the entire fossil fuel industry, launched a massive campaign to discredit climate science and scientists in the late 1980s, he was aware of the consensus on man-made global warming .

Supran and his colleagues hope their work can help provide accountability for the cynical strategies employed by ExxonMobil and similar organizations that have deliberately obfuscated information on climate change. The new study offers more ground for lawsuits, political movements and civic activism.

One billion people in the world live every day without electricity, facing very difficult challenges. With Raptech we have decided, for this Christmas 2022, to contribute to an initiative capable of generating a real positive impact on the most disadvantaged people and we have turned our attention to the Sopowerful Foundation.

Sopowerful is a no-profit with the mission of’ solar where it matters most’. The foundation applies photovoltaics where it enables essential elements of life such as health services, education, and access to water. For now it is doing it in Malawi, Tanzania, and Lebanon, where a real difference has already been created for more than 80,000 people today, through photovoltaics.

Sopowerful’s goal is to impact over 500,000 people in 2025, and we’re really happy to be part of and contribute to this journey. If you also want to make a difference, visit https://sopowerful.org/.

We will shortly update you with the first results of the project we have undertaken with Sopowerful, for now we just have to wish you a Merry Christmas with your loved ones!

The world community is currently living in an era of progressive energy crisis. At the same time, as a result of the intensive use of non-renewable energy sources for heating, vehicles, machines, agricultural units and various household appliances, a huge amount of carbon, sulfur and nitrogen oxides is formed in the atmosphere. All this contributes to the increase in the temperature of the earth and the surface of the water, causes environmental pollution, acid rain and also stimulates the intensive melting of ice, the rise in the level of the oceans, the flooding of vast land areas, the emergence of cyclones and hurricanes covering entire continents. Global climate change is forcing individual companies and entire countries to take steps to reduce their CO2 emissions. As a result, renewable energy sources are becoming increasingly popular. Obtaining energy from renewable sources has only recently become a common practice, but it is already gaining popularity at a rapid pace, becoming the preferred source of energy supply for an increasing number of consumers. Thanks to the successful combination of challenging trends and rising demand trends, easily observed in developed and developing countries around the world, solar-wind energy successfully competes with traditional energy. Renewable energy comes from natural processes that are constantly replenished. In its various forms, it comes directly from the sun, wind or heat generated deep inside the Earth. The definition includes electricity and heat generated from solar, wind, ocean, hydroelectric, biomass, geothermal, biofuels and hydrogen derived from renewable resources.

Solar energy is becoming more and more widespread

Renewable energy sources will become the fastest growing segment of global energy over the next 20 years. By 2035, their share in global electricity generation will increase by about one and a half times. Renewable energy is linked to natural phenomena such as sunlight, wind, tides, and geothermal heat, as explained by the International Energy Agency. If we talk about trends, then, firstly, renewable energy sources have practically achieved price-performance parity with traditional ones, both within the framework of centralized energy networks and outside them. Second, the use of solar and wind power plants can help balance the load on the electricity grid. Thirdly, solar-wind energy is strengthening its competitive advantages thanks to the development of new technologies.

Enabling factors

Today there are no longer any obstacles that have slowed down the active introduction of renewable energies for a long time. The reason for this are three key factors: the rapid approach to grid-parity, the possibility of economic and stable integration of energy networks and the development of technological innovations. Generating energy from sunlight and wind was thought to be too expensive a method that could only be applied in a few niche markets. However, now these sources are already ahead of traditional ones in terms of the cost of electricity. Their productivity is also constantly growing. Previous ideas, that the use of renewable energy creates many still unsolved problems with the integration of energy grids have changed. In particular, progress in the integration of RES (Renewable Energy Sources) systems today no longer directly depends on the development of support technologies. On the contrary, innovative developments are being actively used in renewable energy, allowing RES to surpass traditional energy resources in popularity.

The progress of technologies

The deployment of renewable energy can be accelerated by innovative technologies such as automation, artificial intelligence and blockchain, as well as the introduction of advanced materials handling and manufacturing operations. These innovations range from those technologies that optimize energy production and the operation of renewable assets (automation, advanced production technologies), to technologies that contribute to a more efficient use of renewable energy, increase the efficiency of renewable energy on the market (blockchain) and the use of advanced materials for the production of solar panels and wind turbines (advanced materials). All these technologies reinforce both development trends, helping to reduce costs and more effectively integrate renewable energy into the grid. Manufacturers anticipate a growing demand for solar-wind energy and are therefore actively investing in these new technologies. The growing demand for renewable energy is driven by cities, communities, emerging markets and businesses who are constantly looking for affordable, green and reliable sources of energy. Thanks to the trends behind its development, solar-wind energy is now optimally positioned to meet all these requirements.

New frontiers

Recently, the development of solar-wind energy has reached new frontiers. As alternative energy sources achieve price and performance parity with traditional sources around the world, they demonstrate the ability to improve the efficiency of energy networks and strengthen their competitiveness with the help of new technologies, barriers and the obstacles to their implementation are gradually disappearing. Solar and wind energy are already among the cheapest sources of energy in the world and have considerable potential for further development, as trends contributing to this have not yet been fully realised. The cost of renewable energy continues to fall, and the successful integration of renewable energy is well underway, supported by the development of technologies that provide even greater efficiency and empower businesses.

solar panels - www.raptech.it

Solar energy sources are a set of technologies that convert solar energy into electrical or thermal energy.

What are solar panels?

To generate heat and electricity from solar radiation, special equipment known as solar panels is used. According to the principle of work, they are divided into: photovoltaic and thermal collectors.

In the first type, photovoltaic, light and infrared rays are immediately converted into electricity. This is possible thanks to the semiconductor properties of silicon and some chemical compounds. When the light hits a cell of the solar panel, a potential difference is generated and, thanks to the p-n junction, an electric current is created. The individual cells connected in series allow to increase the output voltage. Therefore, they are called solar panels, that is, composed of a number of identical elements.

Solar collectors, on the other hand, have a liquid heat carrier that absorbs infrared radiation, heats up, expands and circulates in a closed system. They can use: water, mineral oils, saline solutions.

The coolant heats the water for heating and domestic or industrial needs, or spins the blades of turbines that generate electricity.

Types of solar panels and their application

A very common and popular type of solar panel is solar panels made from monocrystalline silicon.

They are obtained by casting high purity silicon crystals, in which the molten mass solidifies upon contact with the crystal seed. During the cooling process, the silicon gradually solidifies in the form of a cylindrical casting of a single crystal with a diameter of 13-20 cm, whose length reaches 200 cm. The ingot thus obtained is cut into sheets of 250-300 microns thick. Such elements have a higher efficiency than elements produced by other methods, the efficiency can reach up to 19%, due to the special orientation of the atoms of the single crystal, which contributes to the growth of electron mobility. The silicon is crossed by a grid of metal electrodes. Traditionally, monocrystalline modules are inserted into an aluminum frame and coated with shockproof glass. The color of the single crystal photocells is dark blue or black.

Solar panels are reliable, durable (life span up to 50 years) and easy to install, as they contain no moving parts. Solar panels can be used where conventional power does not work well and there are many sunny days.

Solar panels made with monocrystalline photovoltaic cells are more efficient, but also more expensive per watt. Their efficiency is generally between 14 and 19%.

Typically, the monocrystalline elements have the shape of polygons, which can hardly fill the entire area of the panel without leaving inefficient areas. Consequently, the specific power of the solar module is slightly lower than the specific power of its single cell.

Polycrystalline silicon solar cells

An alternative to monocrystalline silicon is polycrystalline silicon. It has a lower cost. The crystals within it are still aggregated, but have a different shape and orientation. This material, compared to the darker single crystals, has a bright blue color. The improvement of the production process of elements of this type today allows to obtain components whose characteristics are only slightly inferior in electrical performance to a single crystal.

Thin-film solar panels

Thin film technologies make it possible to make a panel that is cheaper in terms of production cost. This circumstance makes the film panels more attractive for the construction of large plants to generate electricity from sunlight, when there are no design limits due to the scarcity of available surface, although the cost of thin film panels is low, they occupy a much larger area (2.5 times) than mono and polycrystalline panels due to lower efficiency. Installation is possible not only on the ground or on the roof, but also on the side surfaces of buildings.

Thin film panels also work quite well with diffuse solar radiation, so the total power generated per year can be greater than traditional crystalline solar panels. Thin film is a much more convenient way to generate energy and can outperform monocrystallines in foggy and cloudy climates or in areas where the air is dusty or rich in other particles.

Thin film panels can be made with amorphous silicon or with cadmium telluride (CdTe).

Solar panels based on CIGS

CIGS is a semiconductor composed of copper, indium, gallium and selenium. This type of solar cells is also made using thin film technology, but compared to cadmium telluride panels it has a higher efficiency, its efficiency reaches 15%.

Potential buyers of solar panels often wonder if one or the other type of photovoltaic modules will be able to provide the necessary power. Here we must understand that the efficiency of solar panels does not directly affect the amount of energy generated by the installation.

The same power of the entire system can be obtained using any type of solar panel, however, more efficient photovoltaic modules will take up less space and require a smaller area to house them. For example, if it takes about 8 square meters to produce one kW of power using monocrystalline silicon, it will instead take about 20 square meters using amorphous silicon panels.

photovoltaic energy - www.raptech.it

The data shows that solar energy is a promising sector: over the past 10 years, the global capacity of photovoltaic systems has increased more than 17 times. The advantages are obvious: clean energy with virtually zero greenhouse gas emissions, safety for humans and the environment, operational autonomy, independence from energy suppliers and savings.

The sun is an inexhaustible alternative energy source. Our planet receives more energy every hour than humanity uses in a year. But how to convert it? This is what photovoltaic systems are for.

How a solar panel works

Despite the external simplicity of the device, the principle of operation of such an electrical device is quite complicated. It is based on the photoelectric effect, which is obtained using photovoltaic cells. Solar panels collect the rays from our star. They fall on the photovoltaic layer. These cells are produced with two chemically modified layers of silicon. When photons from sunlight reach the surface, these electrons acquire the ability to move, creating a flow that produces an electric current.

Sunlight causes the release of electrons from the two layers. The electrons of the second layer occupy the space left free by the first layer. There is a constant movement of electrons, which leads to the natural formation of voltage on the external circuit. As a result, one of the photovoltaic layers acquires a negative charge, and the second becomes positive.

Next, the inverter converts the current from DC to AC.

Each cell generates a small amount of energy and a panel is generally made up of 36-72 photovoltaic cells. By connecting several panels together, a photovoltaic system is created. Eight to ten panels are enough to power a small house. However, these statistics are obviously influenced by some factors such as the efficiency of the panels, the amount of sunlight in the region and the energy needs of the residence itself.

The process of converting sunlight into electricity begins in the so-called photovoltaic cell. It is important to note that photovoltaic solar panels generate electricity in the form of direct current, which means that the electricity must go through an inverter to convert it to alternating current, which is commonly used in buildings, appliances, sockets and light bulbs.

Solar panels connection

The efficiency and correct functioning of solar panels depend not only on their type, power, but also on the installation and connection. It is necessary to develop the correct scheme for connecting all elements of the power plant and correctly select the place for the installation of solar panels.

All panels must then be connected in parallel-series. This type of connection ensures maximum efficiency of the equipment.