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  • All New Rooftops in France Will Now Be Topped With Solar Panels or Plants

    A groundbreaking new law has recently been passed in France, which requires the rooftops of new buildings that will be built in commercial zones in France to have plants or solar panels in them. This is one major step in the overall goal of France to have most, if not all, of its roofs to be "green roofs". Such green roofs have several advantages that are beneficial to the building owners and to the environment, in general: Making use of unused space - rooftops are usually just vacant spaces that provide no active use to building owners, aside from protecting the building from the outside elements. With green roofs, rooftops can be turned into gardens or small farms and even into energy generation facilities with solar panels. Increased insulation - adding plants or solar panels to rooftops can act as another form of insulation to a building, which reduces the energy that is needed to heat it during winter and cool it during summer. This then reduces the overall demand on the national power grid during peak hot or cold weather, which can even reduce electricity prices. Create spaces and homes for birds and other wildlife - humans and animals coexisting seems impossible in a dense urban city setting but this green roof initiative will help to change that. This is one of the major reasons why this law that requires green roofs have been pushed mainly by environmental activists in the country. Turning roofs into energy generation facilities - with solar panels, you generate energy right on your very roof which can help meet some or all of your building's energy demand. Reduced greenhouse gas emissions - adding plants or solar panels to a building's rooftop works to reduce greenhouse gas emissions and its total carbon footprint, which is great in fighting climate change. Environmental activists from France actually demanded a law that requires 100% roof coverage by plants or solar panels, but even if the passed law only requires partial coverage, it is still a huge step towards sustainability. This green roof initiative may incur some costs for the building owner, but the good thing is that they earn it all back, especially with solar panels, as having a green roof also offers some financial incentives. What makes this law standout is that it takes effect for the whole country of France. Similar laws and regulations have been passed in many cities all around the world, but France's law was the first one to have nationwide coverage.

  • Are Transparent Solar Cells the Future of Solar Energy?

    Photovoltaics, the technology that makes solar panels possible, has been continuously evolving, especially in the past decade and has provided us with very promising new discoveries and advancements. One of these came just this month, where a team of researchers from Incheon National University in South Korea has developed a new design for a “transparent solar cell”. Transparent solar cells have been quite the “holy grail” of PV researchers as it has the potential of being integrated into windows, vehicles, cellphone screens and many other everyday items. Imagine having a house or an office building whose windows are capable of producing energy and powering your appliances. You give these unused and passive surfaces another purpose and functionality. That’s great, right? But if you think about it, a transparent solar cell seems like a paradox because solar cells absorb the energy from sunlight and convert it to electricity, while being transparent means that it allows light to pass through it without being absorbed. So, how do transparent solar cells work? Right now, the designs of solar cells, which are the most basic building blocks of solar panels, can be categorized into two. They can either be the “wet type” or those that are based on solutions or the “dry type” or those that uses metal-oxide semiconductors for their construction. The “wet type” solar cells are used in the more traditional types of solar panels, which are monocrystalline and polycrystalline solar panels while the “dry type” solar cells are the newer type of solar cell technologies, which include thin-film solar panels. The “dry type” solar cells have a distinct advantage of also being able to absorb UV light and convert it to electricity. The researchers at Incheon National University, however, improved upon this technology even further by allowing the solar cell to absorb only this part of sunlight. They were able to achieve this by inserting an ultra-thin layer of silicon (Si) between the two metal-oxide semiconductors of the solar cell. The researchers of this new technology view this major breakthrough as the beginning of a new class of solar panels, which can be used in a wide variety of new areas and applications. They envision this new technology to be used in building materials, most especially for glass buildings and mobile and other electric devices like smart phones and electric cars. They are even working on using other innovative materials like 2D semiconductors, nanocrystals of metal-oxides and sulfide semiconductors. However, before we get too excited regarding this news, we need to keep in mind several things: We would not probably see transparent solar panels in the market in the near future. A new invention or technology like this type of transparent solar cells goes through many more stages of development to be made available in the market. Also, it will need to overcome many more challenges like the need for funding and manufacturing techniques and methods. While transparent solar cells can be used for passive building components like windows, this would mean that most of the time, you would not have control over their tilt and orientation. You need to be content with a 90-degree tilt and whatever orientation that the windows are facing. This would mean that transparent solar cells would most probably not produce as much energy compared to traditional solar panels that are installed on the roof. But since these turn passive building components like windows to power-generating units, any amount of energy that they can produce is still a plus. We are still not sure whether the economics of this new technology will allow it to be widely used in the market. As an example, take a look at Tesla’s solar roof tiles. They are quite similar to transparent solar panels in the sense that they directly replace building components with power-generating ones. Even with the huge promise and potential of this new technology, it still turned out to be a flop due to a lot of factors. One, its target market was limited to new house constructions. Aside from this, the installation of these solar roof tiles required specialized tools and expertise. This means that they can’t be installed by traditional workers, unlike normal roof tiles, which results to a significantly higher cost of installation. Lastly, traditional solar panels have been in the market for decades already, which means they have had decades of development in both the technology and in manufacturing as an advantage. The result is that these traditional solar panels are still superior not only in terms of quality, but more importantly, with its cost. Newer technologies like these solar roof tiles, would really have a hard time competing in the market. Whether or not transparent solar panels will be the next big thing for solar energy in the near future, one thing is certain, the future of solar energy is very bright and it is still shaping up to be the energy of the future.

  • 8 Reasons Why Microinverters are the Best for Residential Installations

    When it comes to residential solar installations, string inverters are the one that is more commonly used because it is the older type of inverter technology and have been in the market longer. Also, the public and most solar installers themselves are not yet too familiar with microinverters because this is a newer type of solar inverter technology. However, with the development of microinverter technology, it has already caught up with string inverters and has even overtaken them in terms of quality and value for installers and homeowners alike. Here are 8 reasons why microinverters are now better than string inverters for residential solar installations. More Efficient The main function of solar inverters is to convert the DC electricity that the solar panels are producing to usable AC electricity. However, they also perform another function which is very important in keeping the efficiency of the solar panels at its maximum, which is called MPPT or Maximum Power Point Tracking. For microinverters, there is a dedicated MPPT or Maximum Power Point Tracker for each individual solar panel on the whole array, which ensures that each solar panel’s energy production is optimized to its maximum. For string inverters, however, there is usually only one, two or three MPPTs for the whole array, which can only be used instead to optimize strings of solar panels rather than individual solar panels for microinverters. Minimizes Losses Due to Shading For string inverters, solar panels are arranged into strings and the solar panels on a single string then work as a single unit in producing energy. The problem with this setup is that when one solar panel is shaded, all the other solar panels on the string also suffer a reduction in their energy production. The result is that the energy production of your whole array is then disproportionately affected by shading in the sense that only a small amount of shading can already severely reduce its energy production. For microinverters, this is never a problem because each solar panel in the array will be working independently with each other. This means that when one solar panel is shaded, only that solar panel will suffer a loss in its energy output. And since each solar panel has a dedicated MPPT for itself, this loss will be reduced even more to a minimum. Module Level Monitoring Since each solar panel in a microinverter system has a dedicated input and MPPT, you will also be able to monitor the individual energy production and performance of each solar panel. With this, you will be able to identify which one/s are performing bad and thus, be able to troubleshoot accordingly. For example, if you notice that one specific solar panel has not been producing energy very well, it might be caused by a piece of trash or plastic that was blown on top of the solar panel. By being able to monitor each individual solar panel’s production, you will immediately be able to fix these problems. For string inverters, on the other hand, this is not possible as it is not capable of collecting the individual solar panel’s energy production data. You would only be able to monitor the total energy production of the whole array or the strings in the array, but you would have no idea about each individual solar panel’s performance. Safety When solar panels are connected together to form strings, the voltages that they produce add up, creating high DC voltages in your roof. For large systems, this can be as high as 1,000V while it can be up to 600V for typical residential homes. These levels of voltages, if not installed properly, can cause arcing, which can then lead to fires. For microinverter systems, however, solar panels are not anymore connected to form strings and thus, their voltages do not add up anymore. Because of this, the highest voltage in microinverter systems are only the 220V AC on its output side, which is no different and no more dangerous than your house’s electrical system. Flexibility Another disadvantage of string inverters is that all of the solar panels on the same string and MPPT input must be installed on roofs with similar tilts and orientation. This is not a problem for buildings with large roof segments, but it is a common problem for residential houses whose roofs are composed of many small segments. With microinverters, you have more flexibility in terms of which roof segments you want to install solar panels on. You would also be able to utilize your roof area to its maximum potential in terms of solar energy production. Modularity Microinverters have the advantage of being modular in nature, because of their small size. This makes it easier for anyone to achieve any system size by using as many microinverters as they need. Also, increasing your system size long after its installation is also made easier as you will just need to install more solar panels and microinverters as per your requirement. For string inverters, this won’t be as easy and increasing your system size will mean installing another new and separate system than your existing one. Saves Space Microinverters are smaller and have been designed to be installed on the roof, under the solar panels. With this, they can already withstand being exposed in the sun and rain for at least 25 years, which is the same amount of time as the lifetime of solar panels. String inverters, on the other hand, will need to be mounted on a wall, which is usually close to your main panel board. This means that you will need to dedicate a space on your wall for it, a space that you will not be able to use anymore for at least 25 years. Has a Longer Lifetime Microinverters have a rated lifetime of 25 years, which is already similar to the solar panel’s rated lifetime. String inverters, on the other hand, have a rated lifetime of only around 10-15 years. This means that for the total lifetime of your solar panels, you will have to replace your string inverter/s at least once. Another problem with this is that solar installers usually don’t tell this to their clients, so many of them are still not aware about this!

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  • Solar Installer | Andal Solar | Calabarzon

    High-quality solar installations for you to be able to use solar energy and save up from your monthly electric bills. Know More Home Projects Solar Basics Our Energy Industry Why Solar Energy? About Andal Solar Why Andal Solar? Our Service Package Blog Meteo Data Calculators Inquiry Referral Program More Our Services Sizing and Design We use the best engineering practices regarding solar sizing and design to ensure that the best type and right size of system will be installed for the customer. Installation Our solar installations follow the industry standards and guidelines to ensure that every component is properly installed and would last for more than 25 years. Customer Education We make sure that our customers truly understand how their solar energy system works and how to operate, monitor, analyze and maintain the whole system by themselves Our Blogs All New Rooftops in France Will Now Be Topped With Solar Panels or Plants Are Transparent Solar Cells the Future of Solar Energy? 8 Reasons Why Microinverters are the Best for Residential Installations Ultimate Guide to Solar Energy System Operations, Maintenance, and Troubleshooting Most Frequently Asked Questions(FAQ) About Solar The Complete Guide on How Solar Panels Work Our Mission Towards a Solar-Powered Philippines Click on the image to know why the Philippines need solar energy! Get In Touch Submit Thanks for submitting! Please leave this field empty. Contact Us 0936-442-6935 Send Us An Email jet@andalsolar.com Like Us on Facebook Share

  • Meteo Data | Andal Solar

    Philippine Meteo Database Choose Location Abra Agusan_Del_Norte Agusan_Del_Sur Aklan Albay Apayao Aurora Basilan Bataan Batanes Batangas Benguet Biliran Bohol Bukidnon Bulacan Cagayan Camarines_Norte Camarines_Sur Camiguin Capiz Catanduanes Cavite Cebu Compostela_Valley Cotobato Davao_Del_Norte Davao_Del_Sur Davao_Occidental Davao_Oriental Dinagat_Islands Eastern_Samar Ifugao Ilocos_Norte Ilocos_Sur Iloilo Isabela Kalinga La_Union Laguna Lanao_Del_Norte Lanao_Del_Sur Leyte Maguindanao Marinduque Masbate Metro_Manila Misamis_Occidental Misamis_Oriental Mountain_Province Negros_Occidental Negros_Oriental Northern_Samar Nueva_Ecija Occidental_Mindoro Oriental_Mindoro Palawan Pampanga Pangasinan Quezon Palawan Pampanga Pangasinan Quezon Rizal Romblon Samar Sarangani Siquijor Sorsogon South_Cotobato Southern_Leyte Sultan_Kuldarat Sulu Surigao_Del_Norte Surigao_Del_Sur Tarlac Tawitawi Zambales arrow&v Location Month Global Irradiance (kWh/m2/day) Ambient Temperature (C) Wind Velocity (m/s) Abra January 3.35 24.30 24.30 Abra February 4.32 25.30 25.30 Abra March 5.04 27.20 27.20 Abra April 5.79 28.90 28.90 Abra May 5.54 29.50 29.50 Abra June 5.25 28.80 28.80 Abra July 4.95 28.70 28.70 Abra August 4.24 28.10 28.10 Abra September 4.57 27.30 27.30 Abra October 3.88 27.20 27.20 Abra November 3.73 25.90 25.90 Abra December 3.33 24.59 24.59 Abra AVERAGE 4.50 27.15 27.15 Agusan_Del_Norte January 3.37 26.34 26.34 Agusan_Del_Norte February 3.92 26.59 26.59 Agusan_Del_Norte March 4.71 27.27 27.27 Agusan_Del_Norte April 4.60 27.89 27.89 Agusan_Del_Norte May 4.66 28.58 28.58 Agusan_Del_Norte June 4.51 27.87 27.87 Agusan_Del_Norte July 4.65 28.26 28.26 Agusan_Del_Norte August 4.41 28.43 28.43 Agusan_Del_Norte September 4.59 27.97 27.97 Agusan_Del_Norte October 4.22 28.06 28.06 Agusan_Del_Norte November 3.84 27.12 27.12 Agusan_Del_Norte December 3.72 26.88 26.88 Agusan_Del_Norte AVERAGE 4.27 27.61 27.61 Agusan_Del_Sur January 3.77 26.51 26.51 Agusan_Del_Sur February 4.11 26.54 26.54 Agusan_Del_Sur March 5.06 27.14 27.14 Agusan_Del_Sur April 5.05 27.68 27.68 Agusan_Del_Sur May 5.16 28.16 28.16 Agusan_Del_Sur June 4.86 27.56 27.56 Agusan_Del_Sur July 5.21 28.01 28.01 Agusan_Del_Sur August 5.00 28.19 28.19 Agusan_Del_Sur September 5.20 27.68 27.68 Agusan_Del_Sur October 4.86 27.98 27.98 Agusan_Del_Sur November 4.06 27.16 27.16 Agusan_Del_Sur December 3.97 27.02 27.02 Agusan_Del_Sur AVERAGE 4.69 27.47 27.47 Aklan January 4.00 25.41 25.41 Aklan February 5.06 26.15 26.15 Aklan March 6.19 27.80 27.80 Aklan April 6.58 29.02 29.02 Aklan May 5.66 29.50 29.50 Aklan June 5.35 28.49 28.49 Aklan July 4.87 28.20 28.20 Aklan August 4.99 27.77 27.77 Aklan September 5.14 26.88 26.88 Aklan October 4.83 27.15 27.15 Aklan November 4.92 26.61 26.61 Source: Meteonorm(Global Climate Database)

  • Calculators | Andal Solar

    Solar PV Calculators Off-Grid Solar and Battery Sizing Wattage Hours per Day Daily Energy Consumption TOTAL Total Wattage Daily Energy Appliance List Appliance Daily Energy Daily Energy Daily Energy Daily Energy Daily Energy Daily Energy Calculate Solar PV Sizing Results Solar Irradiation: kW/m2/day System Efficiency % Required Size of Solar Wp Size of Solar Minimum Size of Inverter W Size of Inverter Standard values are as follows: Solar Irradiation = 4.5 System Efficiency = 80% Battery Sizing Results Battery Efficiency % Battery Depth of Discharge (DoD) % Battery Voltage V Battery Capacity Ah Required Total Size of Battery Ah Size of Solar Minimum Number of Pieces pcs. Size of Solar Standard values are as follows: Battery Efficiency = 80% Battery DoD = 80%

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