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As you would expect from a Foster + Partners project, the self-contained city within a city has green energy management at the very heart of the design. Crystal Island will generate low carbon energy from solar arrays and wind turbines located on the building with vast atriums to regulate the internal air temperature during the extremes of the Russian summer and winter.

Players can build their cities with ecofriendly options, such as wind turbines, hydrogen fuel stations, and green buildings. Their decisions will ultimately drive the climate of their city and even imperil it with disasters should their CO2 levels go too high. Pollution also affects the health of the population, and quality of life. Building these green options are more costly than conventional ones, which lends a realistic approach to the game as well.

SUEZ Energy Resources NA, the U.S. retail energy business of SUEZ Energy North America announced that it has won a contract to supply the city of Dallas with approximately 90% of it's electricity, 40% of which will be from renewable energy sources.

We examine the potential economic implications of using vehicle batteries to store grid electricity generated at off-peak hours for off-vehicle use during peak hours. Hourly electricity prices in three U.S. cities were used to arrive at daily profit values, while the economic losses associated with battery degradation were calculated based on data collected from A123 Systems LiFePO4/Graphite cells tested under combined driving and off-vehicle electricity utilization. For a 16 kWh vehicle battery pack, the maximum annual profit with perfect market information and no battery degradation cost ranged from ~$140 to $250 in the three cities. If the measured battery degradation is applied, however, the maximum annual profit (if battery pack replacement costs fall to $5,000 for a 16 kWh battery) decreases to ~$10-$120. It appears unlikely that these profits alone will provide sufficient incentive to the vehicle owner to use the battery pack for electricity storage and later off-vehicle use. We also estimate grid net social welfare benefits from avoiding the construction and use of peaking generators that may accrue to the owner, finding that these are similar in magnitude to the energy arbitrage profit.

One of the more intriguing examples was from an inventor named Steve LeRoy who has developed a system to harness energy from lightning bolts.

Take a good look at panels that have been installed for several years and you will notice discontinuities and shiny areas where the components have been damaged and where the power production is reduced.

Though there are no visibly moving parts in a solar PV panel, there are many parts of the system where continuous chemical and physical reactions take place that can eventually lead to system degradation and failure.

Leaves and snow are particular nuisances for rooftop solar panels, but sand and bird droppings can be important in some areas as well.

This helps explain why the Prius so outsells the rival Honda Civic Hybrid. Both have similar base prices, about $22,000, and fuel economy (Prius, 60 miles per gallon city/51 highway; Civic, 49 mpg city/51 highway).

For years, I was a public transit aficionado, constantly trumpeting the benefits of buses. I have to admit, though, that it didn’t take me long to swear off buses (and their rising costs to ride) forever, in favor of a totally free bicycle that could spirit me off to anywhere–back alleys and unique routes included.

The latest effort comes not in some green hub like Portland, Oregon, but in the Persian Gulf, fuelled as much by oil wealth—and the need to find postpetroleum business models—as environmental zeal. Groundbreaking is scheduled for Saturday for Masdar City, a nearly self-contained mini-municipality designed for up to 50,000 people rising from the desert next to Abu Dhabi’s international airport and intended as a hub for academic and corporate research on nonpolluting energy technologies.

Elizabeth developed the POWERleap as her senior thesis project at the University of Michigan's School of Art and Design. She wanted to design a project that would educate people about their relationship and dependence on energy. Human bodies generate electricity, about 100 watts at rest, which (according to www.elizabethredmond.net) is enough to power the computer I am writing on.

An idealized application for superconductors is to employ them in the transmission of commercial power to cities. However, due to the high cost and impracticality of cooling miles of superconducting wire to cryogenic temperatures, this has only happened with short "test runs". In May of 2001 some 150,000 residents of Copenhagen, Denmark, began receiving their electricity through HTS (high-temperature superconducting) material. That cable was only 30 meters long, but proved adequate for testing purposes. In the summer of 2001 Pirelli completed installation of three 400-foot HTS cables for Detroit Edison at the Frisbie Substation capable of delivering 100 million watts of power. This marked the first time commercial power has been delivered to customers of a US power utility through superconducting wire. Intermagnetics General has announced that its IGC-SuperPower subsidiary has joined with BOC and Sumitomo Electric in a $26 million project to install an underground, HTS power cable in Albany, New York, in Niagara Mohawk Power Corporation's power grid. Sumitomo Electric's DI-BSCCO cable was employed in the first in-grid power cable demonstration project sponsored by the U.S. Department of Energy and New York Energy Research & Development Authority. After connecting to the grid successfully on July 2006, the DI-BSCCO cable has been supplying the power to approximately 70,000 households without any problems. The long-term test will be completed in the 2007-2008 timeframe.

Any capacitor large enough to run the bus, would presently be many times the size of the actual bus, thus the capacitors would need to be in a string of trailers behind the bus to power it and leave room for the passengers. If such a capacitor-powered bus was ever designed, then consider how damaging the energy stored in the capacitor/s, if a sudden short circuit developed - it would demolish several city blocks in the resultant explosion. By comparison, energy stored in chemical form is far safer, small volume for large energy storage, easy to control.

Growth in the renewable energy industry is set to reach more than US $250 billion by the year 2017 with the electric car, sustainable cities, non-U.S.-based energy firms, geothermal energy and the greening of the shipping industry helping to lead the way. That's the prediction made by Clean Edge in its Clean Energy Trends 2008 report released on Wednesday.

Project Better Place, owned by Israeli-American entrepreneur Shai Agassi, will provide lithium-ion batteries to power the cars and the infrastructure to refresh or replace them. One battery will enable the cars to travel 124 miles per charge. Project Better Place will install parking meter-like plugs on city streets and construct service stations along highways to replace the batteries. [2] Renault-Nissan will build the new cars and will offer a small number of their existing electric models, such as the “Megane” sedan, at prices roughly comparable to gasoline models. To promote this form of environmentally efficient transportation, the Israeli government cut the tax rate on cars powered by electricity to 10 percent (from 79 percent on ordinary cars) to encourage consumers to buy the vehicles once they become available. [3] This initiative will offer consumers an inexpensive car for which they will pay a monthly fee based on expected mileage.