What are the benefits of installing rooftop solar system?

Reduction of energy bills – Installing solar power plant can help to save substantial amount of money on electricity bills. Per unit cost of energy generated from the solar plant is comparatively cheaper to energy purchased from the utility. Use of underutilized roof area – Installing solar plant on the roof is most effective way to utilize roof. This not only increases the value of the home but also offers multiple financial benefits. Participation in building modern Indian power system – Installing solar power plants supports creation of distributed power generation network and reduces need for extensive use of fossil fuels. Reduce power losses – The energy can be produced though solar power plant on your own roof and can be consumed within your building, which limits transmission losses. Renewable energy source – Unlike fossil fuels and natural gas, the sun is a source of energy that is renewable. Going solar reduces our dependence on the fossil fuels. Shrink your carbon footprint – Going solar reduces the CO2 emissions, the leading cause of climate change and global warming.

Read More


How does temperature affect solar panels?

Solar panels react differently to the operating temperature. The efficiency of a solar panel decreases as it increases above the ambient temperature. Each solar panel has a temperature coefficient (which is defined in datasheet of panels). The temperature coefficient represents the rate at which the panel will underperform at each increase in degree Celsius (°C). Most panels have a temperature coefficient of between -0.2% /°C to -0.5%/°C, when tested under standard laboratory conditions, where ambient temperature is set to 25°C. For example if the temperature coefficient of a particular type of panel is -0.5%, then for every 10C rise, the panel’s output power will reduce by 0.5%. [Source: Youtube] [Publisher: altE Store’s Educational Video Channel]

Read More


Consumer Interest Form

Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry’s standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum. It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using ‘Content here, content here’, making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for ‘lorem ipsum’ will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like). Contrary to popular belief, Lorem Ipsum is not simply random text. It has roots in a piece of classical Latin literature from 45 BC, making it over 2000 years old. Richard McClintock, a Latin professor at Hampden-Sydney College in Virginia, looked up one of the more obscure Latin words, consectetur, from a Lorem Ipsum passage, and […]

Read More


What is the role of lightning arrestor in solar PV systems?

Lightning can strike anywhere at any time without warning & it can be destructive even when if it does not strike directly. The energy released by a lightning discharge is one of the most common causes of fire. Therefore, personal and fire protection is of utmost importance in case of a lightning strike to the building. Lightning arrestors are designed to absorb voltage spikes caused by electrical storms, and effectively allow the surge to bypass power wiring and the PV system.

Read More


Why solar plants needs to be earthed?

The aim of earthing is to enhance the safety of the installation of solar plant by reducing the level of danger inherent to fault currents. Earthing prevents damage to the components as a result of flow of heavy fault currents. For rooftop solar plants earthing is done on both DC side as well as AC side covering components of the plant like modules, inverter, structure & lightning arrester.

Read More


What are solar DC cables?

Solar DC cables interconnect solar panels to the combiner boxes to inverter. The DC cables are usually two-core cables, a current-carrying live red wire and a negative blue wire, both are typically surrounded by an insulation layer. DC cables are generally made of copper conductors which provides more flexibility. As the life of the solar plant is expected to be more than 25 years, DC cables should be capable to withstand high temperatures, UV radiations, fire risk, expose to water etc.

Read More


What is a Hot-Dip Galvanized Iron (GI) structure?

Hot Dip Galvanizing is the process of applying a zinc coating to fabricated iron structure by immersing the structure in a bath consisting primarily of molten zinc. The galvanizing prevents the corrosion of the iron structure by providing a tough metallic zinc envelope, which completely covers the surface of the structure and seals it from the corrosive action of its environment. Hot-dip galvanizing involves three main steps: Preparation: The galvanizing reaction can only occur on a chemically clean surface, so the first step of the process involves removing any contamination on surface of the iron structure. Galvanizing: The clean iron structure is dipped into the molten zinc, and held there until the temperature of the iron quilibrates with that of the bath. The structure is then pulled-out & allowed to cool. Inspection: After galvanizing, the coated materials are inspected for coating thickness, uniformity and coating appearance. It is advisable to have galvanization post-fabrication of the structure in order to avoid any damage to the galvanized layer. The thickness of galvanization varies from 40 -150 micros depending on the local site conditions and requirements.

Read More


What would happen if the solar panels deployed in the system have different electrical characteristics?

When solar panels with different electrical characteristics, interconnected with each other are deployed in the system, it creates serious power losses & adversely affects the overall energy generation. These losses are referred as “Mismatch losses”. The current (Isc) in the string in which the panels are connected in series with each other, is limited to the lowest output current from any of the panel. Thus mismatch causes the lower output power from the string & the system efficiency and performance becomes lower.

Read More


Does the tilt angle and/or orientation of the solar panel affect performance of the solar plant?

The performance of the solar panel is affected by its tilt angle and orientation with respect to the horizontal plane. Orienting the solar panel in a direction and tilt to maximize its exposure to direct sunlight can ensure a better generation. The solar panel collects solar radiation most efficiently when the sun’s rays are perpendicular to the panel’s surface. Solar panels should always face south if the plant is in the northern hemisphere, or north if the plant is in the southern hemisphere & the tilt of the solar panels should be proportionate to the latitude of the plant site to optimize their power generation throughout the year. The installer of the plant analyses the optimum tilt & orientation before installing the solar plant. [Source: Youtube] [Publisher: altE Store’s Educational Video Channel]

Read More


Can my solar panels withstand harsh weather conditions?

Weather conditions are unlike in each location.  As solar plants are installed around the world, solar panel manufacturers test their products to ensure that they are dust & storm resistant, salt mist & ammonia corrosion resistant, capable to withstand hail storms & heavy snow loads & extreme temperature variations. The junction box attached with the modules are made waterproof.

Read More