Solar System:Electricity travels from a power plant to your house via a power grid. If you are not connected to the grid it means that the power lines do not reach your house, usually because you live in a remote area.
A) On Grid:
PV systems generate energy from sunlight during the day. This energy goes into a grid connect inverter which converts the DC current into AC current, similar to that of the grid. This solar electricity current can then power all the appliances in your home, such as cooking appliances, phones, computers, lights, radios, etc… Power can be drawn directly from the solar inverter and any leftover electricity can then be fed back into the grid.On-grid solar power system is a solar power generation system where it is connected to the utility grid. The installation of the same is also fuss free and easy to maintain.Benefits of on-grid solar –1. Zero Electricity Bills2. Easy maintenance3. Passive income generation
B) Stand Alone/ Off Grid Solar Energy Systems:
A stand alone solar system means that you are not connected to the public grid. When you are “off grid” it means that you must create your own electricity to run your home.In this case, solar panels or wind turbines are used to charge batteries which store energy.An off the grid solar system is a system that is designed to work on its own.
An off-grid system typically has five elements:1. Renewable electricity source – solar PV and / or wind;2. Back-up generator (diesel);3. Inverters / converters as required to convert dc electricity to ac (and possibly ac to dc);4. Batteries to store electricity generated by the renewable energy source;5. Master controller and/or battery management system to control the operation of the system.Benefits of off-grid solar:1. Light with No Power.2. Lack of Electric Bills (Off grid power systems do not use electric from the grid and therefore cost you nothing in monthly electric bills).3. Easier Installation4. Light Where You Need it.In addition climate control may be required, depending on the system location and the choice of battery.
C) Net Metering:
Net metering is a solar incentive that allows you to send excess solar electricity to the grid in exchange for electric bill credits.If a customer generates more electricity in the system than the solar panels generate, they can use these credits to reduce the electricity needed to be purchased from the utility, i.e. they are typically paid for that net excess generation (NEG) at the utility’s avoided cost, or the wholesale rate.Net metering serves several benefits helping us make a difference to the environment. It stabilizes the demand with solar energy and provides energy independence & sustainability.Net metering allows property owners with solar to take full advantage of the energy produced by their system, as production and usage can vary with seasonality.There is certain challenges w.r.t. effective implementation of net metering in India. The tariff and net metering policies vary from state to state, making solar a viable option at one place and unviable at another. Unless the tariff is market-determined and not regulated, net metering cannot be implemented successfully.Solar power has several benefits which notably includes a reduction in the electricity cost and usage. However, there are other benefits that depend on the type of system you choose.
Advantages of Solar Energy:• Among all the benefits of solar panels, the most important thing is that solar energy is a truly renewable energy source.• With a solar panel system you’ll generate free power for your system’s entire lifecycle, helping in reducing your utility bills and you’ll save a lot of money.• By investing in a solar energy system now, you can fix your electricity rate and protect against unpredictable increases in electric costs.• Solar energy can be used for diverse purposes. You can generate electricity (photovoltaic) or heat (solar thermal). Solar energy can be used to produce electricity in areas without access to the energy grid, to distil water in regions with limited clean water supplies and to power satellites in space.• Solar energy systems generally don’t require a lot of maintenance. You only need to keep them relatively clean, so cleaning them a couple of times per year will do the job. So, after covering the initial cost of the solar system, you can expect very little spending on maintenance and repair work.• Solar energy will be accessible as long as we have the sun, therefore sunlight will be available to us for at least 5 billion years when according to scientists the sun is going to die.Technology in the solar power industry is constantly advancing and improvements will intensify in the future. Innovations in quantum physics and nanotechnology can potentially increase the effectiveness of solar panels and double, or even triple, the electrical input of the solar power systems.
Disadvantages of Solar Energy:• Solar panels are dependent on sunlight; therefore a few cloudy rainy rains have a noticeable effects o the energy system.
• Although solar energy can still be collected during cloudy and rainy days, the efficiency of the solar system drops. Solar panels are dependent on sunlight to effectively gather solar energy. Therefore, a few cloudy, rainy days can have a noticeable effect on the energy system.• Solar energy has to be used right away, or it can be stored in large batteries. These batteries, used in off-the-grid solar systems, can be charged during the day so that the energy is used at night.In most cases, it is smarter to just use solar energy during the day and take energy from the grid during the night• Solar panels require a lot of space. The more electricity you want to produce, the more solar panels you will need, as you want to collect as much sunlight as possible. If you don’t have the space for all the panels that you wanted, you can opt for installing fewer to still satisfy some of your energy needs.• There are also some toxic materials and hazardous products used during the manufacturing process of solar photovoltaic, which can indirectly affect the environment. Nevertheless, solar energy pollutes far less than other alternative energy sources.You can opt for installing fewer to satisfy some of your energy need as it pollutes for less than other alternative energy sources.