Question 1

Do solar panels work during monsoons or winter?

Accepted Answer

Green energy is produced  from sunlight and not the sun’s heat. So, the solar panels work just as  efficiently during the monsoons. In fact, the solar rooftop photovoltaic  panels produce 10-25% of their maximum power on cloudy or rainy days.

Solar installations actually produce more electricity during winters.

Question 2

What kind of common appliances or machinery works on solar power?

Accepted Answer

Lights, fans, ACs, desktops, laptops, washing machines, refrigerators,  TVs, water heaters, water pumps and ovens work on solar power.

Question 3

How much space do you require for a 1 kW solar system? How many units of electricity will a 1 kW solar power plant generate?

Accepted Answer

A 1 kW solar power plant needs around 100 sq. ft.

A 1 kW solar PV plant can generate between 1 kWh to 7 kWh of electricity per day or 850 kWh per year.

Question 4

What is Net metering and gross metering?

Accepted Answer

Net-metering  records how much energy is supplied by your solar panels to the grid  and how much is consumed. Rooftop PV systems may generate excess  electricity during the day. Net metering returns the excess units  produced by your solar panels to the grid. It adjusts this excess  against your usage, and you are billed accordingly.

Gross metering is all the electricity that is produced by your solar  power system and all the electricity that is exported to the grid. You  have to pay a retail supply tariff to the distribution company(DISCOM)  for the total units consumed.

Question 5

Which are the top solar panel manufacturers in the world?

Accepted Answer

Jinko Solar, China; JA Solar, China; Trina Solar, China; LONGi Solar,  China; Canadian Solar, Canada; REC, Singapore; Risen Energy, China;  First Solar, USA; Adani, India; Vikram Solar, India; HHV(Swelect),  India;Renewsys, India are the best panel manufacturers of the world.

Question 6

Which inverters do you use for your solar projects?

Accepted Answer

We use inverters manufactured by Sungrow, Delta, Solar Edge, Goodwe, SMA, Fronius and Growatt.

Question 7

What is the warranty period for solar panels and inverters? What does the warranty include?

Accepted Answer

A  solar power panel comes with a 10 to 12 years product guarantee for  replacement or repair.  It also has a 25-years’ linear power performance  warranty, that is, it will be replaced or repaired, in case the panel  starts performing lesser than the assured degradation.

A solar inverter normally has a 5 to 7 years’ guarantee for  replacement or repair. You can buy extended warranty up to 20  years(depending on the manufacturing company).

Question 8

How long does it take to complete a project above 100kW? How long does it take you to finish a residential project?

Accepted Answer

A  100kW solar power plant can be completed in approximately 1 month, from  taking initial approvals from the government to synchronizing the power  plant with the local grid.

For a residential solar project, it takes 48 hours for the onsite execution.

Question 9

Will solar work when there is a power outage or grid failure?

Accepted Answer

On-grid  solar does not work during power outage or grid failure due to  technical reasons. For example, a linesperson is in danger while  repairing points of failure in case of power leakage in the grid. So,  power shuts down automatically. Also, in a grid-connected system, excess  power is sent back to the grid and not stored, so that you get utility  credits.

In PV solar systems, only battery power can help during blackouts.

Question 10

Can we synchronise solar power plant with diesel generator power?

Accepted Answer

Solar power plants in the industrial, commercial and home sectors can be  synchronized to diesel generators with the help of DG-PV Synchronising  Controllers. The DG-PV controllers handle reverse power, voltage and  frequency issues.

Question 11

Do you recommend a battery system for storing power?

Accepted Answer

Solar battery storage systems efficiently store solar power produced  during all hours of the day, in home and business environments. It is  good to have a battery backup if you have expensive machines or are in  locations that undergo regular power outages or with severe climatic  conditions. However, solar battery banks double operational cost; need  space and a lot of maintenance.

Question 12

What type of maintenance is needed for solar panels?

Accepted Answer

Solar power panel maintenance is easy and cheap. A monthly wash with  clean water, is enough to take care of the solar panels. Completely shut  down the DC/AC systems, before cleaning. We provide 1-year free  maintenance for systems installed by us, followed by regular remote  monitoring, on-site supervision and technical maintenance. We also provide maintenance for systems, not installed by us at nominal cost.

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