Texas power outage: How different electricity sources fare in extreme weather

• The chart above shows the production drop-off.

By the numbers: All major forms of generation were affected, but gas took the biggest hit.

• "Gas‑fired generation has a rated winter capacity of 55 GW but output dropped to 31 GW on 15 February due to issues throughout the supply chain — freezing wellheads, pipeline derates and generator equipment failures all contributed," IEA notes.