Entrepreneurs should take advantage of the vast amount of business opportunities associated with climate change, an expert has urged.

James Cameron, founder of specialist merchant bank Climate Change Capital, said acting in response to environmental change represents one of the largest ever levels of untapped business prospects.

"Responding to climate change is imperative. It is a consumer need, not a consumer want. We must do it for the security of society and the well being of all of us," he said.

"But we aren't going to get what we need from a depressed state of mind but we will get it from an anything is possible, I can make money attitude. That's where entrepreneurs come in."

He said investments in areas including clean fuels, renewable power and green technology all offer entrepreneurs significant financial returns as well as the opportunity to benefit the environment

Cameron added that there need not be a conflict in making attractive financial returns on investment and pursuing projects which benefit the environment.

"US organisations have already recognised that there's greenback in green technology," he concluded.