Frequently asked questions
1Should I install rooftop solar power plant?
Yes, you definitely should. Solar power is simple to set up and safe to use. It saves money too, over its lifetime.
2Should I use solar for my house, and completely cut off grid power, considering the initial investment and long-term savings?
Yes, may consider that. It makes sense to switch to solar completely. Solar power requires an upfront investment but is almost maintenance free for 25 years. Grid power, on the other hand, may be cheaper now, but the PU cost of electricity rises at least 5% every year. At this rate, grid power is going to be more expensive than solar very soon.
3What is the cost of installing a 5kw solar rooftop system?
That depends on what system you are planning to install - Solar AC or Solar DC. Solar AC would cost around Rs. 2.5 - 3 lakhs. Solar DC system will cost a small premium but will be much more efficient and safer to use considering its LVDC 48V technology.
4My electricity bill is very high, what do I do?
Go solar! Install a rooftop solar system to reduce your bill. Opt for Solar DC systems which due to its high efficiency can save up to 75% of your electricity bill.
5I have frequent power cuts in my house. Which type of solar solution should I opt for?
You have two options - Solar AC or Solar DC, along with batteries. Solar DC system with its 48V technology is more efficient. Hence, the batteries will last longer and will give you a longer backup.
6What is a solar panel ?
Solar panels are made of solar cells connected in series or parallel or both depending on specification. Solar cells are manufactured from Silicon wafers. The final arrangement is covered with glass and other protective materials, with aluminum enclosure or casing.
7Is a solar solution same for all loads or are there any types of them?
A solar solution will depend on your load requirements. You may choose between Solar AC and Solar DC, or between on-grid and off-grid solution.
8What does an inverter do in a solar power system?
Solar power is generated by a solar panel as DC power. Since electrical components in most households still run on AC power, you have to convert the DC power to AC power. This is done by an inverter.
9How important is the structure quality on which the solar panels are mounted?
It is very important to have a strong Module mounting Structure (MMS). Since it has to endure harsh weather conditions like scorching heat or snowy cold or rain throughout its lifetime, it is advisable to go for quality MMS design and strong steel structures.
10Can I use general cables that are available in local market, in a rooftop solar system?
You are advised not to do that. The cable grade and sizing will depend on the current it will carry. Kindly consult a proper solar provider for your requirements.
11How do I get govt. approvals & subsidies for residential roof top solar plants?
Govt. subsidy can generally be availed only for residential customers. You need to check with your local electricity distribution company for your eligibility and process on how to receive the subsidy.
12Does solar power system work only on sunny days? What about when it is cloudy ?
It works any time the sun is out. But, the amount of power generation will depend on the intensity of the sun. Hence, sunny days will generate maximum electricity, whereas in cloudy or rainy days, the electricity generation will be less, but not zero.
13What types of buildings are solar plants suitable for?
Solar plants can be easily set up on the roof of RCC buildings. For buildings with any other nature of roof, or kutcha houses, it needs to be checked how many panels it can hold.
14Can a solar panel be used to run a water pump?
Yes, solar panels can be used for running water pumps. You will need a proper charge controller with correct rating with the solar panel to use it.
15What is the typical maintenance necessary for a solar power system?
Solar power systems are very low maintenance. Just clean the surface of solar panels regularly, and that should be enough. Other than that, you may get the system checked for fault once a year.
1What is Inverterless Technology?
Did you know typical Inverters and solar solutions available in the market wasted almost half the power generated before they power the appliances? This was because of unnecessary convertors that incurred a lot of losses and poor design. Inverterless eliminates the need for these converters by working directly on DC through state of art design. Inverterless is a solar solution that can also act as a power back up whenever necessary. The smart controller built within the Inverterless charges the battery, alarms/switches the loads during an overload condition, reliably powers the load, and most importantly saves energy thereby reducing your electricity bill!“Switch to Inverterless! Switch to a better tomorrow”.
2What is a solar inverterless product for homes?
Solar Inverterless is an innovative smart power back-up solution for your homes. This product is a cost-effective alternative to bulky and inefficient Solar based inverters that are used at home today. Inverterless saves 50% of your electricity bill through the intelligent use of solar, battery and energy efficient DC equipment. This power backup system for homes uses Solar-DC, a technology developed in collaboration with IITM, provides a 48V DC as a power back-up line that provides uninterrupted, continuous power. This line enables the use of energy efficient DC appliances such as BLDC fans and LED lights, resulting in a substantial reduction in energy consumption and provides significant cost savings to the consumer.
3Features of solar inverterless DC products?
Features • Patented Technology • Seamlessly integrates Solar, Grid & Battery. • Grid AC input. • Main DC line to power all equipment. • Intelligent source selection. • Mobile energy monitoring using the Android App. • MPPT charging. • Protection against under-voltage and over-voltage
4What is a inverterless product for residential apartments and offices.
Inverterless is an innovative solar solution that provides a high energy efficient power management and distribution system, targeted for the next generation Green Apartments and Offices. It is a modular, scalable solution that enables expansion of the energy requirements in a hassle-free manner. The basic premise of the solution is that Solar DC conceived & developed in collaboration with IITM, which provides 48V as a new power line. This line enables the use of energy efficient DC appliances such as BLDC fans and LED lights, resulting in substantial reductions in energy consumptions. Efficient DC Appliances Power consumption Normal AC Appliances Power consumption BLDC Fan-@Full Speed 30w, @ low-speed 6w AC Fan-@Full Speed 72w, @ low-speed 60w DC LED light-18w CFL tube light-36w TVs, Mobile phone, Laptop Chargers-DC-DC conversion losses less than 10%. TVs, Mobile phone, Laptop Chargers-AC-DC conversion losses from 25% to 50%.
5Why Inverterless Technology? Why Is It Needed?
• Advantages for Residential, Offices, Educational Institutes. • Advantages for Builders, Apartment and Commercial Complex Owners. • Reduced power consumption by 50%. • 24x7 Uninterrupted Power supply. • Low cost and occupies less space. below is the difference between Solar DC and conventional Solar AC Technology Inverterless unit provides efficient DC power system for houses and office spaces. The Solar and the Rectified Grid power are efficiently shared in a manner of maximizing Solar power usage Conventional systems use DC to AC and AC to DC to charge Batteries, and DC to AC inverters to supply 230V AC. This results in multiple conversions resulting in inefficient and significant losses in power. Efficiency The new DC-power appliances such as fans and light are highly efficient, resulting in less than 50% power consumption Normal AC appliances convert AC back to DC, resulting in losses and are inefficient compared to DC counterparts. Overall power saving 40% to 60% overall power saving is possible Compared to conventional systems, even saves 50% of the space. Conventional AC systems would need up to 60% larger solar panel and batteries, resulting in higher inefficiencies, Costs and space requirements. Safety Falls under SELV, as all devices work with 48V, Reducing the risk of electric shock. Devices and inverter operate at 230V, adequate precaution Should be taken as in normal AC System.
6How does solar inverterless DC system work?
During daytime, it takes energy from Solar and during Night times it takes energy or power from AC 230V(Electricity Board), means Inverterless System will convert 230V AC Power into 48V DC Power when both are not there means Solar and Normal AC Power are not there then Battery Bank will come into the picture.
7Why DC appliances?
A normal AC fan used at home typically consumes 72W, whereas a DC-powered BLDC fan consumes only 30W at full speed. At lowest speed, an AC fan may consume about 60W, whereas a BLDC fan will consume about 9W. Similarly, a CFL four feet tube-light consumes 36W, whereas an equivalent DCpowered LED tube-light consumes only about 15W; it can also be dimmed to consume about 3W. All electronics TV, laptops, cell-phones, tablets etc. use DC alone. The AC- DC adapter that we use has losses of 30% to 50%. A DC-powering will reduce losses to less than 10%. Technical Benefits: • By using DC 48V Solution, we can avoid power conversions & power losses by avoiding unnecessary power conversions by up to 60%. • No carbon footprints, 100% Green energy. • 48V DC falls under Safe Extra Low Voltage (SELV); thus no shock, reducing the risk of electric shock and no fire accidents. • Controlling/Monitoring of loads with IR Remote controls. • Monitoring power saving & readings in Energy meter. • High efficiency. Commercial Benefits: • Energy savings with energy efficient DC appliances. • Reduction in monthly electricity bill up to 50%. • Low cost & more effective compared to equivalent Solar AC solution.
8How does Inverterless Home Rooftop solution as a grid-tie solar installation work?
There are two major components: DPAU (DC Power Augmentation Unit) and BLE (Bluetooth Low Energy). The power from the grid carries 230V AC electricity. This electricity goes to DPAU unit within the Inverterless solar controller where it gets converted into usable 48V DC electricity. It then powers all connected DC electrical load. Surplus energy generated is fed to the battery for charging. The Inverterless solar controller is designed such that power required to run the load is obtained firstly from solar, then from grid & thirdly from the battery.BLE (Bluetooth Low Energy)module present within the smart controller aids in displaying consumption related data onto the user app.
9What happens to Inverterless Home Rooftop solution when the grid fails?
Typical AC grid-tie solar inverters are connected to the grid and cannot work without the grid. When the grid fails, the system also fails to generate any electricity. But with Inverterless Home Rooftop package, the solar power system acts independent and can run all the DC loads connected in the absence of grid failure for given amount of time. This is the ultimate power back solution.
10 How does Inverterless Home Rooftop solution as an off grid installation work?
Inverterless Home Rooftop solution consists of solar panel, Inverterless solar controller, set of battery and DC appliances kit. When sunlight falls on the solar panels, they generate DC electricity. This goes into the Inverterless solar controller and comes out as usable 48V DC electricity to power the connected load. Surplus DC gets stored in the battery for later use. The Solar controller has an inbuilt charge controller which monitors the health of battery ensuring a perfect state of charge at every instant of time. Hence, ensures reliable power supply to off-grid installations.
11At what angle should I place the solar panel for maximum output?
The angle of inclination should be approximately equal the latitude of the place, facing south or north, depending on whether you are in the northern hemisphere or southern hemisphere respectively.
12What is the duration of warranty for solar panels?
Generally, solar panels give a warranty of 10 years against any manufacturing defect, and a conditional generation guarantee of 25 years.
13Why is it important to clean solar panels regularly?
It is advised to keep the surface solar panels clean to maximize the power generation. Cleaning them at least once in a week is suggested.
14How do I do the maintenance of my rooftop solar power system?
Solar power systems require very low maintenance. You only have to clean the surface of solar panels regularly. Other than that, you may get the system checked for fault once a year.
15What is the normal payback period?
Normal solar power plants have a payback period of fewer than 6 years. Solar DC being a more efficient technology can give a payback period of 2 - 3 years if used optimally.
16Do individuals get any subsidy or tax benefits for setting up solar systems?
Individuals may get subsidy depending on the local state regulations. Please consult with your state's electricity distribution company or state nodal agency for Renewable energy for specific details that are applicable to you. For commercial developers, tax benefits such as Accelerated Depreciation may be availed.
17How do I calculate the solar installation size for my home?
Your solar installation sizing will depend on the electrical load connected to your home. Typically, a 1 kW solar power plant requires a roof size of 100 square feet to set up.
1Where should “Inverterless Home Rooftop solution”be installed?
Inverterless Home Rooftop package is customized for dual purposes: as a grid-tie solution, as an off-grid solution). Hence, suited for places that are on the grid as well as those completely off -grid. Homes that have good grid-connectivity, but feel the cost of electricity is high or prone to power cuts can install this system. Homes that are completely off-grid or willing to go off-grid can install this system as – they make and use electricity generated from solar.
2 What happens to Inverterless Home Rooftop solution in the absence of Sun?
In the absence of sun or on a partially cloudy day, solar panels cannot make enough electricity, so electricity is primarily taken from the grid to support the connected load.
3What Cygni provides with 48V DC technology solution?
➔ Solar panels 125Wp/200Wp /250Wp/ 300Wp ➔ Battery Bank(based on the back-up hours) ➔ Inverterless IBIS/DASH Series Controller with battery. ➔ Module Mounting Structure & MC4 Connectors ➔ DC Appliances: Tube Lights(18W),BLDC Fan(30W),Bulb(5W), Remote, Mobile Charger(5W),DC Socket,Laptop adaptors, Down Lights(9W) etc.
4What is the difference between Solar Inverter and Inverterless
5What is the benefits of lithium-ion battery from other battery?
- Longer life - Compact Size - Completely Sealed (No Leakage) - Higher Depth Of Discharge(DOD) - Hassel Free. - Light Weight
6How can i reach Cygni?
Email Id- email@example.com, Phone- 040 23545001, Address- Cygni Energy Private Limited, Second Floor, Lansum House, 283, Rd Number 78, Jubilee Hills, Hyderabad, Telangana 500033.
7Whom do i contact for service ?
Email id- firstname.lastname@example.org, Tollfree Number- 7379937666
8What is the warranty period of IBIS System?
Cygni IBIS Series have 5Years warranty period from Invoice date.
9DC Microgrid- What is it?
DC microgrid, as a source of power, connects solar panels in series in order to generate power at a comparatively higher DC voltage, which can be transmitted over a small distance. Multiple solar power plants are strategically placed at specific locations within the grid, instead of a single centralized grid, so as to minimize distribution losses. Houses tap into the distribution line with the help of junction boxes and charge controllers for each home. The microgrid charge controller installed in each house steps down the higher DC ‘grid’ voltage, to 12/24/48 V DC as per individual requirement, which is used to charge the storage battery and power the energy efficient DC loads in house.
10Apart from panels, inverter, batteries and structure, what else is necessary for setting up a solar power plant?
The other components consist of the remaining Balance of System (BoS) equipment like cables, sensors, protection equipment like MCBs, etc
11What is the function of batteries in a solar power system?
You need batteries for providing backup, especially during the night when there is no solar power available. During daytime, the excess energy generated by solar panels is stored in the battery and the same energy is used up at night lighting up, running fans, and catering to other appliances.
12What are the main considerations while installing a rooftop solar power plant?
The main pre-requisites for installing a solar power system include the knowledge of connected load to your house and the available shade-free rooftop area.
13How does shading affect the performance of the solar panels?
The shading on a solar panel reduces the direct sunlight available to it to generate power from. Higher the shading, lower will be the electricity generated from it.
14Which direction should the solar panels face ?
The solar panel should always face the south (if you are in the northern hemisphere) or north (if you are in the southern hemisphere) for maximum power generation throughout the year. The angle of inclination approximately should be the latitude of the place.
15What benefits will a brand deliver in comparison to local installers?
Brands bring the quality that a local vendor may not be able to deliver. They also have significant experience in setting up such systems, and are better equipped to execute the installation in the shortest time possible.
16Is it worth installing solar panels in my house in India to power all my electrical equipment and completely cut off power from the grid, keeping in mind the initial investment and long-term savings?
Yes, it is worth doing that. It makes sense to switch to solar completely. Solar power requires an upfront investment but is almost maintenance free for 25 years. Grid power, on the other hand, may be cheaper now, but the per unit cost of electricity rises at least 5% every year. At this rate, grid power is going to be more expensive than solar very soon. Besides, if you are using solar DC, it is much more efficient than AC systems or even Solar AC. The savings are considerably more here and will have a lower payback period.