THE RECORD
What changed
During the 2010s, levelized costs for solar PV and onshore wind fell sharply as deployment grew.
EVIDENCE
What remains
Auction prices, capacity, supply chains and cost data document speed and regional variation.
WHY IT MATTERS
Why it matters
It widened the economic basis for replacing fossil fuels, alongside grids, storage, permitting and a just transition.
OPEN QUESTION
Where interpretation begins
Generation cost alone omits system, land, mineral and labour impacts; emissions depend on policy and demand.