Environmentalists don’t want to provide more energy or “cleaner energy.”
What they want is a dependency on energy sources that they don’t like, constantly push to phase them out with green subsidies that don’t work, and with the goal of having that fail so that the public is faced with skyrocketing energy prices and unreliable energy prices.
Or they simply hate us and want us to freeze, starve, and die.
At best, they want to have outrage fuel and a basis for their movement. What they don’t want is to fix any of the problems they invented in any kind of even nominally workable way. The moment that any workable fix arises, they shut it down.
The old enviro-conspiracy theory is that car companies had a car that ran on water, but then hid it to protect the oil industry. The reality is that if a car ran on water, environmentalists would be the first to shut it down because it would lead to exactly what they don’t want, people enjoying their lives guilt-free.