Concept:
India has a diversified power generation sector that includes:
• Thermal power
• Hydroelectric power
• Solar energy
• Wind energy
• Nuclear power
Among all these sources, thermal power generation based mainly on coal has historically dominated the installed power capacity in India.
Step 1: Analyze Natural Gas
Natural gas power plants contribute to electricity generation in India, but their share is comparatively smaller due to:
• Fuel availability issues
• Higher operational cost
• Infrastructure limitations
Therefore:
\[
\text{Natural Gas does not have the highest share}
\]
Step 2: Analyze Coal
Coal-based thermal power plants form the backbone of India’s electricity generation sector.
Reasons include:
• Large coal reserves
• Established infrastructure
• Reliable base-load generation
• Long history of thermal power development
Coal contributes the largest portion of installed electricity generation capacity.
Hence:
\[
\text{Coal has the highest share}
\]
Step 3: Analyze Solar Energy
Solar energy capacity has increased rapidly in recent years due to renewable energy initiatives.
However, its total installed share is still lower than coal-based capacity.
Thus:
\[
\text{Solar Energy does not have the highest share}
\]
Step 4: Analyze Wind Energy
Wind energy also contributes significantly to renewable generation.
But its installed capacity remains lower than coal-based thermal power.
Therefore:
\[
\text{Wind Energy does not have the highest share}
\]
Step 5: Final Conclusion
Among the given options, the source with the highest installed power generation capacity in India is:
\[
\boxed{\text{Coal}}
\]
Therefore, the correct option is:
\[
\boxed{(B)}
\]