MM: Switch grass Never heard of it, but it sounds very interesting.
Renewable sources of energy I think the best way of selling the idea of large-scale conversion to renewables to a reluctant population (such as oil-dependent Americans) would be in terms of energy security. Even if it works out as slightly more expensive in the short term, the investment will pay off as the price of the technology will fall with widespread adoption. You then have a country that is less dependent on potentially expensive imports from unstable parts of the world.
Britain used to be self-sufficient in oil until output from the North Sea peaked in 1999. Even then, the price of North Sea Oil fluctuated with the global price, so even self-sufficiency in a commodity does not guarantee a secure supply (if foreign buyers will pay more, they'll be able to buy more raising prices for domestic buyers).
MM: The Gulf Stream alone could produce millions, if not billions, of kwh. Probably not - it's too far out to sea to be economical to harness. Most tidal barriers and wave-energy generators are constructed across wide river estuaries and straits between mainland and islands. There are new potential generators that are efficient enough to convert the flow of water in a river to electricity without damming the river (they essentially take the form of a turbine placed on the river bed), but I don't think they've been tried anywhere yet.
"I was afraid the English people on these boards would think Americans were morons for not utilizing the railroad as much as they do in the UK." Yes, and no. Americans are much better at exploiting their railroads for freight than we are. Our railways still carry far more passengers than freight so we could each learn from the other. The US coasts would be ideal places to build high-speed lines linking large population centres with fast, frequent, electric trains. Fewer internal flights means fewer emissions, reduced dependency on oil for fuel and reduced risk of terrorism (although we have had a number of rail bombings in Europe in the last few years). Not to mention the hassle you avoid by not going through airport security.
Rail travel is often very competitive with air travel over medium distances (up to 600 miles). The journeys are usually city centre to city centre so you don't have the trek to an out-of-town airport. You avoid the queues for security and you don't need to switch your laptop and mobiles off for take-off on a train.
There are now no flights between Paris and Belgium because of the High-Speed rail link and fewer between London and Paris and Brussels because of Eurostar.
JMR: Hydro runs into the same problem here with environmentalist opposition. I'd like to make something clear here. I am not opposed to conservation. Yep, it's irritating. Most dams seek to alleviate the environmental problems as best they can. Most have salmon runs at the side so that migration patterns of fish are not disrupted.
Solar panels Back to solar panels again: the UK government provides grant money to home-owners who wish to invest in solar panels or other renewable generators. They have been doing this for a few years, making money available each month. To begin with, applications would use up the supply within a month. Supply hasn't kept up with demand though, and currently the grant money is snapped up within 40 minutes of being made available.
JMR: Another futuristic option, although a somewhat scary one, is the development of fusion power. It is fusion, not fission. It's the same source of power that powers the sun and other stars: fusion of hydrogen into helium. It's not scary as the only radioactive material that is produced is the walls of the reactor (a tokamak: from the Russian for Toroidal Chamber with Magnetic Coils). The high heat needed to sustain nuclear fusion is beyond all known materials, so it has to be contained by very strong magnetic fields.
The latest generation of
tokamak is planned to sustain nuclear fusion for a WHOPPING eight minutes (!) and will require less energy to sustain fusion than it generates during those eight minutes. Fusion Power is still a pipe-dream and we are unlikely to get a commercial reactor before 2050 with widespread adoption in the following 30 years. That said, people have been predicting commercial reactors within the next 30 years for the past 50 years, so keep your fingers crossed.
To follow up on FarmerBob's post. ITER is being built in Caderache in France, but it is very much an international project part-funded by the US.
JMR: They are also beginning construction on what would be one of the largest hydroelectric complexes in the world on a river in western China running along the border with Tibet. It's not the Yangtze as suggested by MM. The Chinese have already dammed that with the Three Gorges Project (creating the largest man-made lake thus far).
Air travel in a low-carbon economy Just had a thought about longer-range travel where railways are impossible or uncompetitive. The Soviets developed a Wing-In-Ground effect (WIG) vehicle in the 1970s. It's a sort of cross between a ship and a plane and uses the extra lift generated by wings at very low altitude. See
ekranoplan on Wikipeda.
Their craft were designed to fly no higher than 5 or 6 metres and required a huge number of jet engines to take off, but once airborne, needed very little fuel to continue flying.
This may seem like a ridiculous suggestion, but Boeing have a concept aircraft,
the Pelican, which would take off as normal from a runway, but fly over the oceans at 6-15 metres.
These types of craft, would be far faster than a ship, but slower than current airliners. They would use far less fuel, potentially making them able to exploit fuel cells or solar cells which would be unlikely to provide enough power for a traditional airliner.