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The two main types of batteries used in Solar Storage Lead-acid batteries - Traditionally used for off-grid power systems but are not widely used today in Storage Solutions.However, Sealed VRLA or valve regulated lead-acid batteries (AGM and Gel) still dominate the Battery Storage market. Lithium-ion batteries - Now the most common type of battery and advancing rapidly. Here are 4 things to consider when contemplating which battery to use. 1. Battery Lifetime To know how much you’re truly investing in a battery, you must weigh the lifetime. How soon you’ll need to replace the battery determines the end value and overall benefits. Suppliers will measure lifetime in two different metrics: the service life and calendar life. The service life is the estimated time a battery will last before it reaches 80% of its energy capacity, meaning the end of life for the battery. Service life is determined by the assumption that the battery is operating under everyday “real world” conditions; therefore, it can vary. The calendar life of the battery is the estimated time that the manufacturer has determined the battery will last if it were to remain trickle charged for its entire life, kept in perfect conditions, with no power outages. The service life of a VRLA battery is typically 3-6 years. While more expensive at the time of purchase, the Li-ion battery can boast a service life of more than ten years. 2. Size & Weight Lithium-ion batteries not only have a smaller footprint due to their high energy density, but they are also much smaller in size. Compared to the VRLA batteries, the Li-ion batteries are 70% smaller and 60% lighter. 3. Maintenance Lithium-ion batteries come with a built-in battery management system (BMS). In contrast, the VRLA batteries require an additional cost if you want to have periodic resistance checks or a BMS added. The BMS provides continuous monitoring of the battery’s health, which prolongs its life and prevents unsafe temperatures, by allowing full control of charging and discharging. 4. Energy vs. Power Deciding which battery is best for your Storage needs can depend on your specific power needs. UPSs require batteries that can supply large amounts of power in a span of 5-10 minutes. The difference between the VRLA and Li-ion batteries is how much capacity remains after the needed runtime. The battery energy is measured by power x hours, meaning if the battery provides 100 volts at 10 amps, it can support 1,000 W. In summary, a power cell provides a large amount of power in a short amount of time, using almost all of the battery’s total energy capacity. An energy cell is designed to provide a relatively small amount of power over a more extended period of time. The Li-ion batteries are designed as power cells or energy cells, while the VRLA batteries are limited by their design as solely energy cells. So, Which Is Better? While the lithium-ion battery’s initial cost is more than the VRLA, they require fewer replacements (if any) over the life of the UPS, eliminating the risk of downtime with battery replacement. The Li-ion battery boasts up to ten times more discharge cycles and about four times less self-discharge.While the Li-ion battery does have stricter transportation batteries and higher manufacturing cost, they weigh about three times lighter than the VRLA, yet with the same amount of energy potential. To top it off, their charging capabilities are four times faster. Want to know more about your specific power needs? Contact our experts today to get more information on the right technology for your business or home.

Solar PV systems Among renewable energy technologies, solar photovoltaics (PV) have seen a considerable growth and uptake in many countries, supplying >1% of the demand in 2015 (Solar Power Europe, 2017). This has been driven largely by the feed-in-tariff incentives, providing payments to ‘prosumers’ for generating electricity and feeding it back to the grid. The main reason for promoting solar PV is that they can help mitigate climate change due to their low carbon emissions on a life cycle basis, as demonstrated by numerous life cycle assessment (LCA) studies. They also have various other advantages. For example, PV panels convert sunlight directly to electricity silently and require little maintenance; they are also reliable, modular and rapidly deployable. PV systems and compatible battery backup However,PV systems also have one main disadvantage: the intermittency. They cannot generate electricity in a continuous, reliable manner as solar radiation may not be present at all or it may not be at the desired level at all times during the day, depending on the location. Therefore, the following situations are often observed: PV systems fail to meet the instantaneous demand for most of the day, or they generate much more electricity than needed at certain times. Hence, coupling a PV system with a battery is essential to decreasing the grid dependency and balancing supply and demand. Coupling a PV system with a battery enables the user to store the excess amount of electricity generated during a low demand and then use this electricity when the generation fails to match the demand. Depending on the load profile and the location, it can be possible to achieve a net zero energy status, with buildings generating at least the same amount of electricity as they consume over a year. However, some studies have shown that this may not always be the case and may depend on many factors. Nevertheless, the economic and environmental benefits of using a hybrid system that integrates solar PV with battery energy storage could be significant. Hybrid PV Systems: Home storage systems typically comprise of a 5–15 kWh scale battery coupled to 5–15 kWp rooftop PV system. Different electrical architectures are used for coupling battery and photovoltaics. Alternating current (AC) architectures consist of a direct current/alternating current (DC/AC) conversion between PV and house grid, and additional DC/AC conversion between battery and house grid, which provides flexibility in terms of modularity and extensibility. DC architectures consist of DC/DC conversion between PV and battery with subsequent DC/AC conversion to house grid, which provides higher conversion efficiency.

What about an R-value? A product’s R-value measures its thermal resistance in units of m²K/W. By dividing a material’s thickness (in metres) by its lambda value, you can discover how well it resists heat transfer at a specific thickness. Lamda λ-value’, measures a product’s thermal conductivity in units of W/mK. The best insulation will have a high R-value at a low thickness, indicating that it is just as good at reducing heat loss as its thicker counterparts. What is a U-value? A U-value is a sum of the thermal resistances of the layers that make up an entire building element – for example, a roof, wall or floor. It also includes adjustments for any fixings or air gaps. Our U-value calculator can make calculations easier, click here to access. A U-value value shows, in units of W/m²K, the ability of an element to transmit heat from a warm space to a cold space in a building, and vice versa. The lower the U-value, the better insulated the building element. A building element’s U-value is extremely important as there are certain standards that should be reached according to ECBC 2017 (Energy Conservation Building Code).

When it comes to the effectiveness of solar panels, a common misconception is that they only work on sunny days. While abundant sunlight is ideal for efficiency, solar panels can continue to produce energy even during cloudy weather, a fact that could bring some peace of mind to residents of the valley of Kashmir considering solar energy solutions. Solar Energy is a reliable source of power and lets explore impact of cold weather and cloud cover on the performance of solar panels. 1. Cloudy days and Solar Panels Even under overcast conditions, solar panels can still generate power, albeit at a reduced rate. Just as you can get a sunburn on a cloudy day because UV light penetrates the clouds, so too can solar panels harness the sun’s energy. Clouds can reduce the amount of sunlight reaching the panels, but they cannot entirely block it. On average, solar panels can still produce about 10% to 25% of their maximum output on a very cloudy day. During slightly cloudy conditions, the diffused sunlight can sometimes result in higher solar panel output due to the scattering effect, which distributes light from different directions. In the valley it's sunny 50.6% of daylight hours. The remaining 49.4% of daylight hours are likely cloudy or with shade, haze or low sun intensity. 2. Temperature & Solar Panels Solar panel performance isn’t just about sunlight; temperature also plays a role. Kashmir's cold climate often means lower temperatures. Even in below-freezing weather, solar panels turn sunlight into electricity. That's because solar panels absorb energy from our sun's abundant light, not the sun's heat. In fact, cold climates are actually optimal for solar panel efficiency, increasing the daily amount of electricity produced despite fewer daylight hours. 3. Solar Panels and Snow Solar panels in Kashmir are installed generally on roof top at an angle which allows the snow to slide off the solar panels without any manual intervention. A dusting of snow has little impact on solar panels because the wind can easily blow it off. Light is able to forward scatter through a sparse coating, reaching the panel to produce electricity. It's a different story when heavy snow accumulates, which prevents PV panels from generating power. Once the snow starts to slide, though, even if it only slightly exposes the panel, power generation is able to occur again. JK Green Technology engineers ensure that our Mono rail frame which binds the solar panel to your roof is of excellent material (anodized aluminum) and strong design. Reach out to us today and let us help you illuminate your journey towards a sustainable energy future. Please call us on +91-9419034877

As a result of global industrialisation, population expansion, and expanding urbanisation, increased energy consumption has emerged as one of the most important concerns in the field of energy management. Energy is essential not only for prosperity but also for meeting high standards of living. Today, energy is generated using several traditional and clean sources of energy. Every day, the world needs a substantial amount of electricity to continue its progress activities.However,because of the limited traditional energy supplies, global energy policy has demanded that energy be used wisely and effectively. The increase in the demand for energy that is sustainable, clean, and easily accessible as well as the decrease in the conventional resources, and their hazardous impacts on the environment also necessitate the transition to find an alternative to the current conventional resources that is sustainable and also reduces the impacts on the environment. Energy trends Even though emerging-market, energy availability has approximately increased, subsequently per capita utilisation of electricity has improved by 50%. Nowadays, conventional resources comprise a huge share of the entire power mix. Because of their continued reliance on fossil fuels, developing countries have abandoned struggles to achieve the sustainable goals of admittance to lasting and clean energy and cleaner surroundings. There are still considerable openings between the current progress and the sustainable development goals 7 objectives. Because these nations are still emerging, financial development has occupied precedence over ecological excellence. Energy evolution trails to 2030 must be entirely incorporated with nationwide energy strategies, that should subsequently connect provincial energy assistance guidelines. Solar Energy Solar energy is the technology used to harness the sun's energy and make it usable.It is the transformation of the energy from the sun into electrical and thermal energy. Solar energy is one of the most plentiful sources of renewable energy available. This is a low-carbon energy source. Heat motors, photovoltaic panels, and photovoltaic converters may all be used to turn solar energy which can also be utilised to create thermal energy into electrical energy.This energy is crucial for producing green energy and driving the conversion of the existing system of energy due to its accessibility and availability. The primary advantage of solar energy over other traditional power sources is the direct transformation of sunlight into solar energy through the use of the tiniest PV solar cells and a variety of additional solar energy gathering techniques. Solar energy has the major benefits of being inexpensive, widely accessible, and abundant when equated to the price of other conventional resources. Energy and Rates Solar power systems usually yield an initial return on investment of 7–11%. Solar energy is also an investment which is inflation-protected because it offsets electricity costs at the current prevailing retail rate. As utility rates increase, with an ever increasing demand for electricity, returns will also increase. In fact, the hot weather in most of India (including J&K) has recently led to a significant increase in electricity prices on the Indian Energy Exchange (IEX) and Power Exchange India (PXI). These are between Rs 6 and Rs 8 per unit and in the near future the cost of solar power generation in India is said to come down to Rs 5–6 per kW h/unit . Solar Power Systems usually have a payback period of between 6 and 12 years. The payback period will depend on electrical usage, electric rate schedule, and cost of the system. In most cases, larger the electricity bill, the greater the return on investment and the faster the payback. The state needs to implement more incentives and tariffs to drive the demand for solar energy generation.

1) Individual Panel Optimization Micro-inverters optimizes for each solar panel alone, not for your entire solar system, as central inverts do. This enables every solar panel to perform at their maximum potential. In other words, one solar panel alone cannot drag down the performance of entire solar array, as opposed to central inverters that optimize for the weakest link. If one solar panel in a string had abnormally high resistance due to a manufacturing defect, the performance of every solar panel connected to that same central inverter would suffer. Likewise, coverage issues such as shading, dirt, snow and even slight orientation mismatch on one of the solar panels would not bring the entire solar system down. 2) Maximum Power Point Tracking (MPPT) MPPT is a technique used to find the right voltage – the maximum power point. When MPPT is applied to each individual panel, as opposed to the solar system as a whole, performance will naturally increase. 3) Easy System Expansion Expanding your solar system with more solar panels later on is easier with micro-inverters. You don’t have to worry about restringing or getting a second central inverter installed. Central inverters come in limited sizes – you might end up having to pay for one that is much bigger than what you actually need. 4) No Single Point of failure Unlike central inverters, if there is something wrong with either one of the solar panels or the micro-inverter that sits on the back of it, the rest of the solar system is unaffected and still up and running. 5) Improved safety Solar panels are connected in series before they are fed into a central inverter, typically with an effective nominal rating of 300-600 VDC (volts of direct current). This current is potentially life threatening. Micro-inverters eliminate the need for high voltage DC wiring, which improve the safety for both solar installers and system owners.

Jammu and Kashmir is one of the richest solar states in India receiving an average of 2218 hours of sunlight per year (out of a total possible 4383 hours) with an average of 6:04 of sunlight per day, making it ideal for solar power generation. Yes, it may sound surprising as Jammu & Kashmir are also the coolest places in our country. In order to promote the use of solar energy, the government of Jammu and Kashmir is offering attractive subsidies to customers for installing rooftop solar panels. To register please go to https://jk.ahasolar.in/estimate-solar-pv To apply for the rooftop solar photovoltaic (PV), electricity consumer needs to enter electricity bill and roof details to apply for the enquiry. Steps to follow to apply: Step 1: Enter Consumer No. & Name Step 2: Enter Roof Area Step 3: Enter Average Monthly Electricity Bill Amount & Units Consumption Step 4: Mobile No. and City Step 5: Then Click on "Submit" thereafter Click to “Apply” to allow Empanelled Installer to contact you for further process. Please contact us at https://www.jk-greentech.com/