The bigger picture. The drop tracks with a broader multi-year cooling in Amazon tree cover loss: after peaking at 5.3 million hectares in 2024, losses fell to 3.7 million hectares in 2025 (Global Forest Watch) — a level below every year since 2021. That decline matters for the atmosphere, too: forest carbon emissions dropped from 2.12 billion tonnes CO2e in 2024 to 1.48 billion tonnes in 2025. Fire is the wild card driving the volatility — it caused an estimated 60% of primary forest loss in 2024, per the article, far more than the 2.1% of cumulative loss GFW attributes to wildfire historically. The rest of Brazil's deforestation is structural: 44% commodity-driven clearing for crops and cattle, and 39% shifting agriculture. Notably, this isn't an energy-sector problem — Brazil's grid runs on hydro (389 TWh) and renewables, giving it a carbon intensity of just 110 gCO2/kWh, a quarter of the global average of 459 gCO2/kWh.

The story. Brazil's space agency INPE recorded just 1,295 square kilometers of Amazon deforestation in the first half of 2026, down 38% from 2,090 sq km in the same period last year — the lowest half-year total in a decade. Officials credit sustained government enforcement, but scientists warn the forest still isn't safe.

The tension. Forecasters expect a "super" El Niño through early 2027, bringing drought that dries out the forest understory and makes small fires spread fast. Brazil boosted its firefighting budget 20% in anticipation, but the same conditions that just delivered a record-low burn season could easily flip once heat and dryness peak later this year.