Investment decisions are very personal given that each individual is looking for different outcomes at different time frames from his/her investment.

Having said that and assuming that my investment would only focus on renewables, my investment portfolio would include companies developing/manufacturing/selling the following:

• Flexible solar cells
• Solar thermal heaters (Water heating)
• Solar thermal cookstoves
• Wind turbines
• Water hydrolisis for hydrogen generation
• Energy storage (batteries and new materials)
• Fibre optic lightning

As you will see, this is a combination on energy generation and use, based on renewable sources. Use of wind and sun as the main sources of energy, plus the products that allow you to store and use such energy.