The controversy that surrounds this sector after the warming that has taken place in the last two years, propelled by the premiums for its development, has pushed the Association of the Photovoltaic Industry to create a guide that tries to dismantle the myths surrounding this energy renewable, and the prejudices that exist about it.1 Solar energy will always be marginal. The global volume of the photovoltaic business in 2008 was more than 30,000 million euros and employed more than 40,000 people in Spain. Likewise, this energy contributed 4% of the national electricity consumption in the summer of 2009.2 The solution, now. The price formation structure of this power is still unfavorable for it. It is also discontinuous, so that if it is generated in large quantities, it would need to be regulated and stored, something that is not yet competitive. The industry needs time to reach a broader size and satisfy an essential part of the energy demand.3 It is an expensive energy proposal. According to the Photovoltaic Industry Association (Asif), the photovoltaic kilowatt / hour (kWh) is apparently more expensive than that generated with conventional energies because they do not include all the expenses incurred when producing it. An example is nuclear, which does not foresee the cost of managing radioactive waste.4 Grants are not worth it at the present time. For the sector, the simplicity of the energy conversion supports the support for photovoltaics. Likewise, without aid to technology, the market will not grow, and without a market, prices will not decrease, and without this drop in prices, the market will not grow.5 For those who defend that this technology has low performance, the sector responds that it is capable of converting more than 13% of the energy it receives into useful energy. Meanwhile, fossil fuels reach 35% of the 0.005% of the solar energy that the plants captured, and this after natural processes of fossilization of thousands of years and industrial methods of extraction and transformation.6 To the disadvantage that many see in that it is only generated during the day, the sector responds that on the contrary, making electricity during the day represents an advantage, because it coincides with the moment of maximum electrical demand, and in case of necessity, its production is It can limit instantly.7 What if the essentials were already discovered? The industry is in its early years, and “is a teenager compared to nuclear fusion, coal or gas,” explains Asif.This type of generation has a lot of ground to advance with more optimized and efficient manufacturing processes.Moreover, there are more recent technologies than the traditional crystalline or amorphous silicon, with a potential that has not yet been developed. Therefore, the sector estimates that the average performance of current systems will double in a few decades.8 The visual impact of the solar orchards on the annoying landscape. Like other renewable sources, such as wind and offshore wind, the commitment to clean energy brings a great debate about the loss of landscape aesthetics.The windmills on the high seas will undoubtedly have the approval of tourism, which fears losing customers due to the presence, even from a distance, of the white blades.In the case of photovoltaics, the legislation is committed to the development of solar panels on the roof of public, industrial and residential buildings. Germany, European leader in the implementation of this technology, photovoltaic solar roofing is a fact for many years.9 Technology is not mature is the argument that many voices wield as proof that photovoltaics has no future.For the sector, “if a technology is considered mature when it is profitable and economically comparable with other existing ones, then we can say that there is no technological system that was mature in its first years of development,” explains Asif.And it is that the electrical energy “is not a product of consumption, but strategic, like the train or the aviation”. In the case of solar, from the phase of conceptual maturation, which the sector places in Albert Einstein and his Nobel for an article on the photovoltaic effect, until the period of technical and economic maturation has passed little more than a century.In the year 1954, two researchers from the Bell laboratories in New Jersey (United States) manufactured the first silicon cell. Since the beginning of the 21st century, industrialized countries such as Germany, the United States, Spain and Italy have established policies for the promotion of solar panels connected to the electricity grid.10 Leaving this technology in the R + D + i stage awaiting the emergence of a more advanced system that allows photovoltaics to be launched on the market is seen by the sector as an “uncertain road, which may be a dead end”.The safest path to success is to continue to support the market and rely on the experience curve with research and investment.The numbers4% of national electricity consumption was provided by photovoltaic solar in the summer of last year.13% of the power that this technology receives to transform into electricity becomes useful force.WHAT IS AND HOW A PHOTOVOLTAIC SYSTEM WORKS?How can the sun’s rays become electrical energy? Interconnected to the network, isolated …What type of photovoltaic systems exist today? What are the advantages of this technology? Ask us everything you want to know about this energy source.Every day, a significant amount of energy comes to our planet free of charge and clean. The rays of the sun, transport light and heat, essential for life on Earth, these beams can be used for the generation of energy, both in the form of heat and electricity.The electricity that is generated from the sun is called photovoltaic, a term formed by two words: photo, which in Greek means “light” and voltaic, which comes from the surname of “Alessandro Volta”, inventor of the first batteries, and name of the “Voltio” electric potential measurement unit.About us:The solar rays are transformed into electricity in a photovoltaic cell manufactured with elements known as semiconductors. The most used is silicon. Sunlight is pure energy, composed of small parts called photons. When photons collide with the solar cell, these photons awaken electrons from the semiconductor material, thus generating electricity.