The rapid deployment of solar power is one of the greatest stories of the 21st century.
After crossing the 100-gigawatt mark in 2012, it took the world 10 years to deploy 1 terawatt of solar power. An additional 1 terawatt, enough to meet all of US power demand at its peak, took less than three years to build. Not even two years later in 2026 — the precise timing is subject to debate among analysts — the 3-terawatt threshold was reached.
No one really noticed.
That makes sense. For most people, the increased deployment of solar isn’t perceived in figures, but in other ways. “Take a train anywhere, say in the UK, and you’re likely to spot solar panels,” said Lara Hayim, head of solar research at BloombergNEF.
The visual signal is only going to get stronger. Forecasters are so bullish about solar that, in just a few years, the 3-terawatt milestone will seem almost insignificant. BNEF expects the world to deploy more than 9 terawatts of solar by 2036.
