Stand-Alone or off-grid solar electricity are PV installations that are not connected to the utility grid. It is for homes that do not have access to grid electricity - i.e. the house cannot be or chooses not to be supplied electricity from a power company. To ensure access to electricity at all times, off-grid solar systems require battery storage and/or a backup generator
A reliable power supply, even without a utility grid: With stand-alone solar solutions from NextGen Cleantech, you can always cover your complete electricity demand and become independent from the electric utility companies.
1) No need for access to the utility grid: These systems eliminate the cost of laying down transmission lines and substations and their inherent power losses. Remote areas can instead directly tap into the power of the sun.
2) Become energy self-sufficient: You can become independent of external energy supply and electricity costs. Energy self-sufficiency is also a form of security in places with fluctuating power supply. This is because fluctuating voltage supply reduces the life-span of household electric and electronic devices. Also, Blackouts and power cuts in the utility grid do not affect Stand-Alone systems.
3) Ease of expansion: Stand-Alone systems can be easily expanded on a modular basis and complemented by storage anytime without the involvement of authorities. Experts at NextGen Cleantech will guide you from planning to commissioning to the fullest extent of our knowledge.
1) Solar charge controller: Solar charge controllers are also known as charge regulators or just battery regulators. They limit the rate of current being delivered to the battery bank and protect the batteries from overcharging. Good charge controllers are crucial for keeping the batteries healthy, which ensures the lifetime of a battery bank is maximized. We have a battery-based inverter in which the charge controller is integrated.
2) Battery Bank : Since Stand-Alone systems are not connected to the grid, it will be lights out by sunset. For this, we install a battery bank that will ensure continuous power supply throughout the night.
3) DC disconnect switch: AC and DC safety disconnects are necessary for all solar systems. For hybrid solar systems, one extra DC disconnect is installed between the hybrid inverter and the battery bank. It is used to cut off the current flowing between these components. This is highly important for maintenance, troubleshooting and protection against electrical fires.
4) Off-grid inverter: There`s no requirement for an inverter if you`re only setting up solar panels for your devices that run on DC current. You will need an inverter to convert DC to AC for AC electrical appliances. Electric current flows from the solar panels through the charge controller into the bank battery bank before it is finally converted into AC by the off-grid inverter.
5) Backup generator: It is costly to build big battery banks that last for several days during the monsoon before discharging. This is where backup generators are useful. In most cases, setting up a backup diesel generator is more economical than investing in an oversized battery bank that rarely gets to function at its full potential. Generators can run on propane, petroleum, gasoline and many other fuel types.
