Energy Transition

When these happened

22 dated records from 1936 to 2026. Each is drawn as wide as its date is certain — a band is a band because nobody knows the year, not because the drawing is imprecise.

22 shown · 22 dated · 0 cannot be placed on an axis · Approximate or contested. Draw a band and do not sharpen its edges.

In order22

1936Wright publishes the airframe cost-quantity relationship
It happened, and the record is settled.
1954-04-25Bell Telephone Laboratories announce the practical silicon solar cell
It happened, and the record is settled.
1976The conventional start of the photovoltaic module price series
It happened, and the record is settled.
2000-04-01Germany's Renewable Energy Sources Act takes effect
It happened, and the record is settled.
c. 2008–2013Chinese manufacturing takes over the photovoltaic supply chain
It happened, and the record is settled.
2012The photovoltaic learning curve is popularised as Swanson's law
It happened, and the record is settled.
2015-12-12The Paris Agreement is adopted at COP21
It happened, and the record is settled.
2016-11-04The Paris Agreement enters into force
It happened, and the record is settled.
2019The Changji–Guquan ultra-high-voltage link is commissioned
It happened, and the record is settled.
2021-08HYBRIT delivers the first hydrogen-reduced steel
It happened, and the record is settled.
2023–2024The lithium price collapses after its 2022 peak
It was measured or witnessed, with the observation cited.
2023-07The IMO adopts its revised greenhouse gas strategy
It happened, and the record is settled.
2023-09The United Kingdom's fifth contract auction attracts no offshore wind bids
It happened, and the record is settled.
2023-12The first Global Stocktake calls for tripling renewable capacity
It happened, and the record is settled.
2024The first calendar year above 1.5 °C above pre-industrial
It was measured or witnessed, with the observation cited.
2024-04Vogtle Unit 4 enters commercial operation
It happened, and the record is settled.
2024-12German power prices spike during a December Dunkelflaute
It was measured or witnessed, with the observation cited.
2025–2026Negotiation of the IMO Net-Zero Framework
Sources disagree, or the dating is contested. Stated, not resolved.
2025-01-01The European Union sustainable aviation fuel blending obligation begins
It happened, and the record is settled.
2025-01-16Fire destroys a large part of the Moss Landing battery installation
It happened, and the record is settled.
2025-04China imposes export controls on rare earths and magnets
It happened, and the record is settled.
2026-01United States withdrawal from the Paris Agreement takes effect
It happened, and the record is settled.