The debate rages on regarding just how long the planet's energy reserves will last. No surprise then that investment in renewable energy is reaching record highs as governments and businesses explore technologies like biofuels, along with solar, geothermal, wind and marine power [source: Llewellyn]. As these technologies make up an ever-growing percentage of our power supply, retirees with technical backgrounds in engineering and hard sciences will find a number of job opportunities available to them. These experts might survey a site to determine if it's a good location for wind turbines, help to design a solar panel installation or consult directly with researchers to improve the efficiency of renewable energy technologies.
For retirees without such a highly technical skill set, plenty of great opportunities exist within the renewable energy sector. For instance, retirees with an agricultural background can consult with energy companies producing ethanol and biodiesel. Those folks with a background in manufacturing might be interested in monitoring the production of the often expensive and complicated machinery needed to produce renewable energy. Whatever their expertise, retirees are likely to find more opportunities in renewable energy as its popularity grows. Renewable energy experts can command daily rates upward of $500 per day depending on their previous experience, and because the work is typically done in an office environment, the role is perfect for retirees who prefer heavy mental lifting over that of the physical variety [source: SJD Accountancy].