Among the three options that are available, the grid tied captive systems are the most prevalent in India. These are available up to a capacity of 100 kW, and typically do not use batteries.
At the same time, stand alone/captive based power plants in India are evolving fast. Globally, most people do not run their entire load solely off their PV system. The majority of systems use a hybrid approach by integrating another power source. The most common form of hybrid system incorporates a gas or diesel powered engine generator, which can greatly reduce the initial cost. Meeting the full load with a PV system means the array and batteries need to support the load under worst-case weather conditions. This also means the battery bank must be large enough to power large loads. These requirements will make the system unviable owing to the high costs of battery storage. Hence, a diesel-solar PV generator provides the optimal power supply source for India as well, as the generator provides the extra energy needed during cloudy weather and during periods of heavier than normal electricity use, and can also be charging the batteries at the same time. A hybrid system provides increased reliability because there are two independent charging systems at work.
Another hybrid approach is a PV system integrated with a wind turbine. Adding wind turbine makes sense in the locations where the wind blows when the sun does not shine. In this case, consecutive days of cloudy weather are not a problem, so long as the wind turbine is spinning. While in theory this combination appears good, in practice this combination has not delivered the benefits expected out of it, primarily owing to the less-than-optimal efficiencies of micro wind turbines.
For even greater reliability and flexibility while using wind and solar, there are experimentations where a third source – diesel generator – has been included in a PV/Wind system. A generator system will act as a third charging source for the batteries. This three-source hybrid is in its nascent stages in India.
- Solar Power vs Diesel Generator
- Types of Solar Cells
- Major obstacles in the Captive Solar industry
- Hottest sectors in the Market that Use Solar Power
- Large Industrial Facilities that use Captive Solar Power
- Large Commercial Facilities that use Captive Solar Power
- Solar Power in the Communication Sector
- Solar Power Generation to Pump Water
- Solar Powered Warning Signals
- Solar Powered Lighting
- Solar Powered Commercial Refrigerators
- Technology Options involved in Captive Solar
- Stand Alone PV Systems
- Grid connected Captive Solar Plants
- Grid connected Captive Solar Plants – without battery
- Grid connected Captive Solar Plants – with battery
- Hybrid Technology Involved in Solar Plants
- Technology Option Prevalent In India and Future Trends
- Setting up a Captive Solar Plant
- Installing a Captive Solar Power Plant
- Installing a Hybrid System
- Essential Components to Set Up A Captive Plant
- Optional Components to Set Up A Captive Plant
- Default Components to Set Up A Captive Plant
- Key Factors to Consider while setting up a Solar Plant
- Solar PV in India – Industry Status & Trends
- Nodal Agencies that Support Renewable Energy Financing in India
- Banks and Institutions that Support Renewable Energy Financing in India