A Solar photovoltaic power plant (MW scale), also known as a solar park, is a large-scale photovoltaic system (PV system) designed for the supply of power into the electricity grid. The solar power source is via photovoltaic modules that convert light directly to electricity.
Most Solar power plants are ground mounted PV systems. They can either be fixed tilt or use a single axis or dual axis solar tracker. While tracking improves the overall performance, it also increases the system's installation and maintenance cost. A solar inverter converts the array's power output from DC to AC, and connection to the utility grid is made through a high voltage, three phase step up transformer.

In grid connected rooftop or small SPV system, the DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to the grid depending on the local technical and legal requirements
These systems generate power during the day time which is utilized by powering captive loads and feed excess power to the grid. In case, when power generated is not sufficient, the captive loads are served by drawing power from the grid.
The concept of rooftop solar is based on the scale of the PV plant rather than the fact whether it is situated on a roof/terrace or not. Hence, the definition of RTS also includes small solar plant on the ground. The main objectives of these type of plants are as follows. • Decrease the consumption from the utility GRID. • Contribute to the generation of clean energy to the GRID.

• NET metering: Link: Sikkim Net metering policy


The solar off- grid system converts sunlight into electricity without connecting to the local utility grids. These are ideal for the areas without public grid access. Off-grid solar energy system includes storage solution for batteries or fly wheel energy storage which allows excess electricity from wasting and can be conserved for future uses.

Electricity supply in rural and remote areas - Off-grid solar systems can facilitate independent, long-term and sustainable electricity generation in rural and remote areas.
Power back up in areas with frequent electricity cuts - A number of places in India face frequent power cuts due to power transmission malfunctions, which can hamper operations of companies and public institutions. Off-grid solar systems can provide an economical and viable long-term backup solution to overcome the problems occurring during frequent power cuts.

• These self-sustainable systems can work independently and do not rely on the grid.
• They generate enough power that can be stored and used at night or when the power grid is down
• These are ideal for remote areas where there is no power access from the grid.
• Grid failures and shutdowns will not affect your power supply.


A home lighting system/solar home system aims at providing solar electricity for operating lights and/or fan or energizing DC operated portable TV sets for specified hours of operation per day. The LED Lamps give higher brightness at very low power consumption and as a result LED based Solar LED home light system requires very small solar panels and batteries compared to the conventional systems. The LED's used in the luminary has a life of more than 50,000 hrs which avoids the costly lamp replacements for several years. Solar LED home lighting system harnesses the power of the Sun to provide reliable, cost-effective electricity wherever it is needed. This solar home lighting system supply electricity for lighting, entertainment, and information to homes that are not connected to grids or where electric supply is quite erratic. Solar Home systems are an excellent solution for household level electrification in rural areas.

• Safe and easy to install.
• Free from noise, smoke, and pollution
• Required very little attention
• Possible to expand the system in future
• Mobile Charging
• Night Lamp
• Digital Battery Status