Land seizures. Dangerous working conditions. Mistreatment of native populations. For decades, such practices were associated in the public mind with the oil and gas industries. That perception in turn undermined confidence in fossil fuels and, as climate change worsened, helped set the stage for a widespread boom in the renewable energy business.

Now that business is itself under scrutiny — and for some of the same practices.

According to a new report, at least 197 allegations of human rights abuses have been leveled against renewable energy projects in recent years, including land-grabs, dangerous working conditions and even killings. Meanwhile, many of the world's largest publicly held solar and wind companies are failing to meet widely accepted human rights benchmarks.