5th World Future Energy Summit

The four- day conference and exhibition also give firms the chance to display their innovative "firsts" in the green- and clean-tech industry.

Founded in the year 2008, the company PlanetSolar from Switzerland, for example, took the opportunity to ship its same- named solar-powered boat during its world tour to Abu Dhabi.

"PlanetSolar is the largest solar power boat in the world. It operates without any patrol gas engines, absolutely clean," Rachel Bros de Puechredon, PlanetSolar’s head of communication told Xinhua.

"We are proud that Crown Prince of Abu Dhabi Sheikh Mohammed bin Zayed Al Nahyan visited the boat and inspected it from inside. Certainly we hope to find customers in the wealthy Gulf Arab region who would like to buy a boat or two from PlanetSolar, so that we can start mass production in the future," he added.

PlanetSolar can ride with a maximum speed of 21 kilometers per hour over the waves of oceans. The 23-meter-long boat, which can be used by up to 12 people, could be used for tourism and transport purposes.

After the summit, the boat will head to Dubai for a brief stopover. It started its world tour on Sept. 27, 2010 in Monaco and is expected to arrive back to the Mediterranean principality in May 2012.

Faisal El Hussein, the PR Manager for Dynamic Security from Abu Dhabi, promised to provide more mobility for the police forces. Dynamic Security is the sole agent for American-made T3 Motion vehicles.

T3s, which run solely on electric batteries and not on petrol, are three-wheel vehicles on which people can stand and drive using their hands to control direction and speed.

"We import T3s from the United States, where they are popular among police forces, as they are fast, small and flexible," EL Hussein explained to Xinhua.

In Dubai, Emaar Properties equipped its private security firm with T3 Electric Stand-up vehicle in order to monitor the popular shopping center Dubai Mall near the 828-meter-tall Burj Khalifa, the tallest building in the world.

In order to provide chilled water to buildings, researchers at Japan’s technology giant Hitachi had the idea of using deep sea water, which is colder than sea water ashore, to be pumped by an intake pipe to chiller plants at cities on islands, in order to reduce energy costs for air conditioners.

Hideta Junishima, a engineer at Hitachi Environment and Water Treatment Group, told Xinhua that thanks to the technology, electricity costs for air conditioners can be reduced by 60 percent, and desalination costs by 20 percent.

According to Junishima, the technology is new and already successfully used in Tateyama City near Tokyo. He added that "We are currently conducting a feasibility study for the Maldives islands. As you know, the Maldives are in danger of being flooded due to the global climate change."

However, in the Gulf Arab region Hitachi’s Multistage Deep Sea Water utilization system would not work as efficiently "because of the shallow waters of the Persian Gulf, where the temperature difference between the water surface and the ground of the sea is not that big," Junishima explained.