El Niño Odds Rise as Energy Bottlenecks Persist
What Happened
Forecasters are increasingly watching for El Niño to return. Models cited by The Guardian now put the chance of El Niño forming this summer at 62%, with a possibility it lasts through the end of the year. That is still an uncertain spring forecast, but it is enough to reopen seasonal planning for drought, heat, and heavy-rain risk across major food, water, and power systems.
In U.S. energy markets, the story remained one of growth under strain. Reuters reported battery storage installations rose 30% in 2025 to a record 58 GWh, with roughly 60 GWh more expected this year. But imports still matter, and shortages of transformers and inverters, along with tighter rules on components from “foreign entities of concern,” are turning supply chains into a practical limit on how fast projects can move.
That bottleneck story sits alongside continued clean-power expansion. U.S. renewables supplied a record 26% of electricity in 2025, and an Energy Information Administration forecast cited in coverage expects solar, wind, and batteries to account for 93% of new capacity additions. Rising demand from data centers is one reason those enabling assets matter more, not less.
Research updates also sharpened two less visible parts of the climate picture. A study reported by ScienceDaily found African forests have been a net carbon source rather than a sink since after 2010. Another study, reported via EurekAlert!, found that better day-ahead weather forecasts could reduce U.S. heat deaths by 18% to 25% by 2100.
Key Points
- El Niño now has a 62% chance of developing this summer and lasting through year-end, bringing seasonal drought, flood, and heat planning back to the foreground.
- U.S. battery storage installations rose 30% in 2025 to 58 GWh, but equipment shortages and component-sourcing rules remain major constraints on delivery.
- Renewables reached 26% of U.S. electricity generation in 2025, with solar, wind, and batteries expected to dominate new capacity additions.
- African forests appear to have shifted from net carbon uptake to net emissions after 2010, with implications for carbon accounting and land-use policy.
- Better weather forecasting looks increasingly like adaptation infrastructure, not just a public service, given its potential effect on heat mortality.
Implications
The immediate takeaway is that lead time is gaining value. If El Niño continues to strengthen, the most important decisions will come before the event is formally established: crop choices, reservoir operations, public-health preparedness, grid planning, and disaster staffing all benefit from earlier action even when forecast confidence is still incomplete.
The broader takeaway is that climate outcomes are being shaped by the quieter parts of the system. Clean-power buildout is still advancing, but transformers, inverters, import exposure, and sourcing rules increasingly determine pace. At the same time, weaker forest carbon uptake and the importance of forecast quality are reminders that both natural buffers and public-warning capacity now deserve more scrutiny in climate planning.
Things to watch
Watch
Whether Pacific conditions strengthen enough over the next few weeks to push El Niño forecasts beyond the usual spring uncertainty.
Watch
Whether U.S. storage and renewable projects start seeing visible cost or schedule impacts from transformer and inverter shortages, import dependence, or tighter sourcing rules.
Watch
Whether the African forest findings begin to affect carbon-market treatment, restoration priorities, or international land-use finance.