Rosenilce Cruz, the principal of the Sao Benedito School, talks about the solar energy that powers the school, near Santarem, Para state, Brazil, Friday, Sept. 4, 2026. (AP Photo/Andre Penner)

Students attend class at the Sao Benedito School, powered by solar panels on the roof, near Santarem, Para state, Brazil, Friday, Sept. 4, 2026. (AP Photo/Andre Penner)

The Sao Benedito School, powered by solar panels on the roof, sits on the banks of the Tapajos River near Santarem, Para state, Brazil, Friday, Sept. 4, 2026. (AP Photo/Andre Penner)

The Sao Benedito School, powered by solar panels on the roof, sits on the banks of the Tapajos River near Santarem, Para state, Brazil, Friday, Sept. 4, 2026. (AP Photo/Andre Penner)

Arapium Indigenous leader Tiago Silva cools off with water pumped from a well using a solar-powered system in the Nova Sociedade community near Santarem, Para state, Brazil, Thursday, Sept. 3, 2026. (AP Photo/Andre Penner)

Daiana Arapiuns, who is part of the Arapium Indigenous group, sits with relatives holding a box containing a donated solar-power system in the Nova Sociedade community near Santarem, Para state, Brazil, Thursday, Sept. 3, 2026. (AP Photo/Andre Penner)

Ideilde Arapiuns, who is part of the Arapium Indigenous group, holds a box containing a donated solar-power system in the Nova Sociedade community near Santarem, Para state, Brazil, Thursday, Sept. 3, 2026. (AP Photo/Andre Penner)

Men, who are part of the Arapium Indigenous group, carry boxes containing donated solar-power systems in the Nova Sociedade community near Santarem, Para state, Brazil, Thursday, Sept. 3, 2026. (AP Photo/Andre Penner)