Solar, wind, tidal, hydroelectric, geothermal, biomass or biofuel, and nuclear?

Would hydrogen be one? What else is there!?

I keep seeing articles saying we have to go to renewable energy sourses and soon. What options do we have. Hydro power is being used and has nearly reachedits limit. Wind power so far has not proven it's worth. It takes a huge number of wind turbines to even begin to make a dent in consumption of fossil fuels. The same with solar power. It would take a vast amount of solar cell panels just to power one factory. Bio fuels such as Bio diesel and alcohal use up a vast amount of crop land that will soon be needed to feed the growing population. Hydrogen has potential but so far it takes more energy to produce it than the energy it provides. Fusion nucular may be the best answer in the long run if it ever becomes possible to build fusion reactors that donot take outside energy to run them. Fision reactors create a vast amount of dangerous wste that will last far too long. Any one know of any alternative that can bee viable?
Thanks to you all for answering so far. There are ideas there that I have not explored very well so I will get at reading and see how they fit in. I know many things have to be done and I do hope it happens soon. Neucular for the time baing seems the only way out until something better comes along later. Thanks

I have a report due tomorrow... I need to define and describe the following alternate energy types:
solar, geothermal, hydro, wind, hydrogen, and biomass.

Is hydrogen as an alternative energy feasible (in Singapore preferrably, but in general will do)? It's part of my school work, and MY STAND IS, IT IS FEASIBLE. Can someone give me some pointers? What should I state?

Solar Photovoltaic Electricity, Solar Thermal Hot Water and Heat, Wind, Tidal, Concentrated Solar Power Plants, Hydro, Hydrogen Cells, etc. Related industries such as robotics which would be used in manufacture of renewable energy systems, mounting hardware, and building integrated solar, electric and hybrid plug in cars, etc.

Can we use the Earth's core or volcanoes to produce renewable energy by using the enormous heat to vaporize water or hydrogen into steam or pressured gas to spin a turbine to generate mega watts of electricity?

The first step would require us to understand the area of continents in 3D perspective. We would have to drill around a one to two thousand mile deep hole from any land mass. Is this feasible?

So far I have heard reasons why each one (ethanol, hydrogen, solar, and whatever else) won't be able to replace oil. What do you guys think?

A star is a massive, luminous ball of plasma that is held together by its own gravity. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth. Other stars are visible in the night sky, when they are not outshone by the Sun. For most of its life, a star shines due to thermonuclear fusion in its core releasing energy that traverses the star's interior and then radiates into outer space. Almost all elements heavier than hydrogen and helium were created by fusion processes in stars.

The four choices are:

1. Graphene Based Ultracapacitors
2. Urea as a hydrogen carrier for fuel cells or Internal Combustion Engines
3. Rechargeable Metal Air batteries
4. Other - got your own idea

It would be nice if you could also explain why you think that energy storage method is more promising than the rest.

The four choices are:

1. Graphene Based Ultracapacitors
2. Urea as a hydrogen carrier for fuel cells or Internal Combustion Engines
3. Rechargeable Metal Air batteries
4. Other - got your own idea

It would be nice if you could also explain why you think that energy storage method is more promising than the rest.
The use of the energy storage is mobile, such as vehicles.

Which alternative energy sources are not affected by the sun out of
Solar energy
Wind energy
Hydropower
Biomass
Hydrogen
Geothermal
?

I'm not talking kilowatt hours here. If you added up the wattage of all the electrical appliances in a house, how much would you get? The reason I ask is that I would like to know how many watts of power generation (solar, wind, hydrogen) I would need to be totally independent of the network. Thanks

Energy's like nuclear, biomass, hydro, hydrogen, solar, wind and others need to be developed to supplement traditional sources. Should and how should the government play a role?

If your Utility company offered you “green power” at a premium, what percentage extra would you agree to pay on each bill? This money would support solar, wind, hydrogen, tidal and geothermal power generation.

Would this be extra helpful in locating platforms out of sight of people in order to preserve the natural coastal horizan from shore? Wouldn't this be easy to expand in locations where it was already built in order to keep up with increases in electrical demand without increasing carbon emissions? Could any country build this as long as it had coastline? Could this be sent to areas with natural disastors or predicted energy shortages as a way to help keep the power running? Could platforms also desalinate water and produce hydrogen on site? Could Solar Power also be located on it?