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There is so much information that exists around solar, and with solar becoming more and more available to the consumer, understanding how it works is a big first step to having your own solar project.


Solar Panels

Solar Panels in the basic sense work by converting available sunlight into usable electricity. The way we define this power is by watts. Watts are made up of amps and volts. Different panels have different ratings for amps and volts, and it is helpful to understand what these numbers mean when you are looking at a system. You can imagine amps as the amount of electrons, and the voltage the amount of pressure pushing those electrons.


Energy and Power

One of the most important concepts to understand when sizing a system or figuring out how much your panel produces is Energy and Power. For a 1KW system, 4nos of 250W panel is used. Totally the power is 1KW(1000Watt). The Energy produced is product of Power and Time. Thus considering 5 hours as sun peak hours a day the Energy produced by 1KW will be 5KWhr in a day.


Knowing how to relate energy and power together is a very important concept, but it is also important to have a more in-depth understanding of electricity as well. This section will go over what electricity is made up of along with different forms of application.


Parallel Connection

Parallel circuits have multiple paths for the current to move along. If an item in the circuit is broken, current will continue to move along the other paths, while ignoring the broken one. This type of circuit is used for most household electrical wiring. For example: when you turn off your TV, it doesn’t also turn off your lights.

When wiring solar panels in parallel, the amperage (current) is additive, but the voltage remains the same. eg. If you had 4 solar panels in parallel and each was rated at 12 volts and 5 amps, the entire array would be 12 volts and 20 amps.


Series Connection

Series circuits have only one path for current to travel along. Therefore, all the current in the circuit must flow through all the loads. A series circuit is a continuous, closed loop - breaking the circuit at any point stops the entire series from operating. An example of a series circuit is a string of old Christmas lights - if one bulb breaks, the whole string turns off.

When wiring solar panels in a series, the voltage is additive, but the amperage remains the same. eg. If you had 4 solar panels in a series and each was rated at 12 volts and 5 amps, the entire array would be 48 volts and 5 amps


Charge Controller

This section will go over charge controller and their purpose. Charge controller can convert any ordinary inverter and battery setup into solar power system. It lets you use the free and green energy generated by solar panels to power all your electrical equipment. You make huge savings on electricity bill and get to charge the batteries even during powercut and of course help save the environment. You take nothing from the main power supply which means your electricity meter stops – more savings for you. Charge controllers generally come in PWM and MPPT.



Solar inverter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel into a utility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network. It is a critical balance of system (BOS)–component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar power inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.


System Sizing

This section will go over how to size your system. We will learn how to figure out how many panels and batteries you need, along with which controller and inverter will fit for your set up. Initially, the type of system should be identified whether Grid Tie or Off—Grid System. Then the system is designed by calculating the Loads used and the working hours. Number of solar Batteries to be selected based on the back-up hours mentioned. Thus size of the system is calculated.

Experience the power of solar energy

It's Abundant

Solar energy is everywhere. You may not be able to dig a coal mine or oil well in your back yard, but with Eternal Energy Solar Guidance you can harness nature’s highest source of power.

The sun sends enough energy to Earth each hour to meet human energy demands for an entire year! It’s the world’s most abundant and accessible source of energy.

It's Affordable

Any serious, long-term global energy source must be scalable. Fossil fuels are generally supply constrained: as demand goes up, so do prices. With solar panels, it’s the exact opposite: as demand goes up, prices tend to go down!

In last few months the price of Solar Product has been reduced tremendously in order to encourage and improve the production of energy through Renewable Source.

It's Sustainable

How do we want to leave the Earth for our children?

Solar Power Plant generate electricity without noise or emissions, and are comprised almost entirely of recyclable materials (like silicon, silver, and aluminum). In addition, solar (photovoltaic) panels do not require water for operation, critically important for sustainable communities around the world.