System Size | Energy/Unit Generation | System Cost Rs | Govt Subsidy Rs |
1 kWp Solar | 4 Units Per Day | 70,000 /- | 30,000 /- |
2 kWp Solar | 8 Units Per Day | 1,20,000 /- | 60,000 /- |
3 kWp Solar | 12 Units Per Day | 1,80,000 /- | 78,000 /- |
Battery energy storage (BES) technology is a vital part of the transition to renewable energy and net zero carbon. BES systems store energy from renewable sources like wind and solar, and release it when needed.
Battery type:
Lithium-ion batteries are the most common type of battery used for BES, and are generally considered to have the longest lifespan.
BES systems are made up of rechargeable batteries, a control system, a power conditioning system, and a protection system.
New battery chemistries are being developed to offer greater stability, density, and shelf life.
These systems combine solar energy with other renewable sources like wind or hydropower.
A transition from centralized energy storage to a more flexible and portable distributed form of energy storage.
The integration of solar energy storage systems with smart grids allows for real-time monitoring and control of energy flow.
Modern solar street lights operate based on the simple principle of photovoltaic effect like traditional solar street lights. The current growth in solar energy sector aims at enhancing the performance of solar light components.
Solar Panel: solar panel: mono-crystalline or poly-crystalline. Conversion rate of mono-crystalline solar panel is much higher than poly-crystalline.
Lighting Fixture: LED is usually used as lighting source of modern solar street light, as the LED will provide much higher Lumens with lower energy consumption. Latest designs use wireless technology control for battery management. The street lights using this technology can operate as a network with each light having the capability of performing on or off the network.
Rechargeable Battery: Battery will store the electricity from solar panel during the day and provide energy to the fixture during night. There are different types of batteries: Gel Cell Deep Cycle Battery and Lead Acid Battery, Lithium-ion LFP Battery and many more.
Controller: Controller is also very important for solar street light. A controller will usually decide to switch on /off charging and lighting. Some modern controllers are programmable so that user can decide the appropriate chance of charging, lighting and dimming.
Pole: Strong Poles are necessary to all street lights, especially to solar street lights as there are often components mounted on the top of the pole: fixtures, panels and sometimes batteries. However, in some newer designs, the PV panels and all electronics are integrated in the pole itself. Wind resistance is also a factor.
Some premium street light products also integrate MPPT charge controller, advanced Battery Management System (BMS) and/or microwave sensor for a robust and extensive application.