Non-fossil power capacity in 2025

One line

The Renewable Energy Ministry reported that India's non-fossil installed capacity reached 266.78 GW in 2025.

Summary

Installed capacity measures the maximum rated output of power assets. It does not equal electricity generated, because plant availability, weather, storage, grid constraints, and demand shape actual output.

PYQ pattern

UPSC commonly tests installed capacity, generation, renewable variability, and India's climate commitments. Review the official UPSC question-paper archive.

Core notes

PIB reported 49.12 GW of non-fossil capacity additions during 2025.
Solar capacity reached 135.81 GW and wind capacity 54.51 GW.
Non-fossil capacity includes renewable sources and nuclear power.

Prelims lens

Capacity is measured in watts, while electricity generation is measured in watt-hours.
Solar and wind have variable capacity factors.
Grid integration needs transmission, balancing, forecasting, and storage.

MCQ 1

Consider the following statements:

Installed capacity and annual electricity generation are different measures.
Non-fossil capacity may include nuclear power.

A. 1 only
B. 2 only
C. Both 1 and 2
D. Neither 1 nor 2

Reveal answer

C

Capacity is a rated maximum, while generation records energy produced. Non-fossil is broader than renewable alone.

MCQ 2

Variable renewable energy creates the strongest need for:

A. Grid balancing and forecasting
B. Removal of transmission lines
C. Elimination of demand data
D. Fixed rainfall

Reveal answer

A

Solar and wind output varies with weather and time, so the grid must balance supply and demand.

Mains

Question, 10 marks, 150 words: Why must renewable-capacity expansion be matched by grid and market reform?

Approach:

Distinguish capacity from generation.
Discuss transmission, storage, flexibility, and demand response.
Examine curtailment, finance, land, and distribution-company weakness.
Suggest planning, forecasting, market signals, and storage procurement.