Design and engineering?

Manufacturing of wind turbines and solar reflectors?

Trades like electricians and plumbers and builders for installing at a domestic level?

Energy auditers?

The crucial jobs, as I see it in design and engineering, to solve the difficult problems require a high level of education. Graduates in these areas still need to learn an enormous amount on the job to be of any practical use.

I think it is a myth that blue collar jobs will change to be somehow green collar. Building a green building is little different, designing it is a different process but actually construction is very similar. Building a wind turbine is little different to many other processes (except for a few highly specialised components). The aerodynamics and site selection and negotiations are new. Installing a pylon and connecting in cables is not vastly different to what the SEC did for many years.

However the “green” companies need to exist to provide those employment opportunities.