This particular group of researchers is focused on harnessing energy from the sun because they are adament that it is the most abundant energy source on the planet. And really when you think of it in terms of its power, consider this – in one hour the sun strikes the Earth with enough energy to power the entire planet for one year.
In an attempt to understand how best to harvest this energy, Daniel Nocera, professor at MIT, and a team of researchers are looking to green plants and how they convert sunlight into fuel by way of photosynthesis.
"To turn sunlight into fuel, that's a chemistry process," says Jonas Peters, professor at MIT. "Nature has come up with an elaborate chemical solution, and it looks like we're going to need an elaborate chemical solution as well, and we need to do it efficiently."
With gas and oil prices at all-time highs, it's only logical for scientists to try to harness some of that solar energy. To that end, three MIT researchers are building a device that mimics photosynthesis.The SRP will complement and interact closely with other large solar projects at MIT, creating one of the largest solar energy clusters at any research university.
"Climate change makes the search for more environmentally benign sources of energy urgent and hugely important. Many experts have concluded that solar energy is a key, if not the key answer to our global energy challenges in the long term," said professor Ernest Moniz, director of the MIT Energy Initiative (MITEI).
Once water molecules are split into hydrogen and oxygen, the hydrogen can power fuel cells. In Nocera's dream scenario, within 10 or 15 years houses will have solar panels on the roof that yield hydrogen to power the house or recharge an electric car.
"It opens up a future where I could see a house that will be its own power station," said Nocera.
For solar energy to have a very significant impact on world energy use, it must also yield a liquid fuel that can power cars and other vehicles. To achieve that, hydrogen fuel could be further processed into hydrocarbons such as methanol.
"We want to really emulate photosynthesis, and not just split water into protons and electrons, but turn hydrogen into the chemical currency of liquid fuel," said Peters.
Carbon dioxide can be added to hydrogen to generate hydrocarbon fuels and then released as it's burned, so the entire process is carbon-neutral, notes Peters.
All of the researchers are committed to making solar power a reality, because, according to them, there is no other choice.
"We're never going to get it if we don't try. We must throw all our resources at this problem because it's so important to the survival of our habitat on this planet," said Cummins.
For more information, visit: www.mit.edu