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Message: <blockquote data-quote="kevin1982my" data-source="post: 635685" data-attributes="member: 24337">Until fusion comes along, solar/geothermal/hydro/wind/wave energy is the most viable source of energy for mankind besides fossil fuels. However, there is a problem with those alternative sources of energy. The power density is very low. A small oil platform offshore can produce 10000-40000 barrels of oil per day. That has more than enough energy to power 30000 cars a day.To produce the same energy as a small oil platform using solar cells, you need solar panels that could nearly cover the land area of petaling jaya. The same goes for wind energy and wave energy. Its not economical at all until crude hits >200 dollars/barrel. Don't forget, the same oil platform can produce crude day and night until the crude runs out while solar can only produce in the day, wind and wave can only produce when its windy.Geothermal is a good source of energy, but its only available in certain areas such as Bacon-Manito area in Philippines. I know that area as i was there to drill some directional geothermal wells.</blockquote>