• What is Net Metering system?
    Net metering is a system where the amount of energy you buy in from the grid and the amount of excess solar energy you export to the grid are recorded separately and you are only billed for the net of these two numbers. So if you import 1000 units of electricity over a month at times when your solar is either not generating (night time) or not generating enough energy to cover all of your needs (say a cloudy day), but you export 500 units of energy to the grid in the same month at other times when your solar is producing more energy than your house/facility is using, then you would be billed for only 500 kWh.

    Example: If you receive electricity from a grid it will run in forward direction and when excess solar unit is supplied to grid then it will run in reverse direction. Suppose you import 100units/month and export 80units/month, then you have to pay for 20 units only. Incase solar units supplied to grid is 120 units/month then KEB will pay you for that excess 20 units and it will be cleared at the end of month and no carry forward to next month.

  • No, all Panels, Inverter, Wiring and Net-meter are part of the system and included in the total cost.
  • On-Grid : Electricity generated form Solar panels will be used for your facility and excess generated will be sent to grid, if Electricity drawn from grid is higher then you have pay to KEB, else KEB will pay you at the end of the month at agreed price. Best suited for Industry/Houses/Corporates where basic idea is to reduce electricity bill.

    Off- Grid: Electricity generated from Solar panels will be used for your facility and excess will be generated will be stored in battery. Same can be used at night or during power cut. Best suited for areas where currently electricity is not available or places where power cut is more than 6hrs in a day.
  • The average structure wait on roof top would be nearly 1.2Kg/sqft.
  • Yes, it’s possible and is the best option. With the help of railings, fixture, nut and bolt system panels can be fixed to roof sheets.

  • No, your final quotation will have list of all components required in numbers. But rates will be for full system and there won’t be breakup as we don’t bill part wise.
  • We strictly don’t encourage assembling the system on an elevated structure that don’t have three side wall support. Despite our recommendation, if customer wants to install on elevated structure to make use of underneath space, and then it’s at complete responsibility of customers’ own risk incase if there is any damage caused due to heavy wind. We will take an underwriting for the requested deviation before the system installation. In the same way there are many customers who have installed with elevated structure and no issues are reported so far.
  • No, in case of concrete roof we can fix panels with concrete paste and for sheets we can use nut and bolt to fix the same.
  • The dead storage weights are used for RCC roof top module mounting. This is to ensure that panel assembly is intact at any circumstance of wind blow. An average weight of 25kg will be distributed across panel area at certain distance based on the technical survey and design output. It’s absolutely safe and don’t bring any additional load on the roof top.
  • In the second year drop-down is 1.5% and after that it’s constant at 0.75%. These figures are theoretical, and there might be some variation.
  • The most preferred facing of panel direction is South, if it’s towards other direction then there will be drop in 2-3% annually. For such small difference we won’t suggest use of structural elevation to change direction.
  • In On-Grid system the generation will be zero. But in Off grid there won’t be any difference.
  • KEB will make RTGS at the end of every month for the excess units you supplied to grid. At present buying rate is Rs 3.7/unit, however it will keep changing from time to time. And it will stay constant for 25 years after you make agreement with KEB during installation.
  • The maximum load limit for net-meter is 1MW, if you install a system beyond 1MW then whole Electricity produced should be utilized by facility owner itself. In such cases make sure that your system installed is lower than their running load capacity of the plant. This comes into picture in large scale manufacturing industries.
  • All TATA Solar panels are tested through PID (Potential Induced Degradation) test at 50⁰ C, so we can assure you of no loss due to high temperature.
  • PV, short for Photovoltaic, derives its name from the process of converting light (‘photo’) directly into electricity (‘voltaic’). Simply put, a Solar PV system is a power station that generates electricity from sunlight.

    The main components of a Solar PV system are:

    Solar Panels or Modules: Solar panels consist of a group of small cells made from semiconductor material. When the sun’s light falls on the modules, it excites the electrons, thereby creating direct current (DC).
    Solar Inverter: The DC electricity goes into an inverter that converts it into alternating current (AC). We use AC for running our household or office or factory equipment.
    Storage Battery (optional): The best use of solar energy is to consume it while it is being generated. If the requirement is to store this power and consume it in the non-sunny hours, then solar energy can be stored in batteries for later consumption.

Installation & Maintenance

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