Right now, we’re at the cusp of a world-changing shift in the green energy economy, as both social and political will have come together to promote a switch from traditional fossil fuels to sustainable and environmentally friendly energy sources. For investors, this shift can open up new vistas of opportunity. Morgan Stanley’s Andrew Percoco believes that the opportunity in clean energy is substantial. The analyst maintains a ‘constructive’ view of energy renewables, and picked out two stocks th