This is a joke, right?
So, it seems they just *made it up*
it appears to mean "we have a prompt instruction to greenwash the AI responses"
After some more digging here’s a bit more on this from: https://ecosia.helpscoutdocs.com/article/534-ecosia-chat-ai
Ecosia Chat - Ecosia Help Center

The Ecosia AI Chat can help you be more climate active every day. The chatbot is powered by OpenAI, but your queries are not used to train the AI model. The cha

@fasterandworse So, basically, they're *guessing* that making AI queries use less than twice as much energy as standard queries even though it's *definitely* a whole lot more than that? (not to mention, how are they calculating that percentage?)
@StarkRG @fasterandworse
It seems they are guessing that their servers only take half the energy of their "green infrastructure" while assuming the actual search results from other data providers are natural resources.