With soaring gasoline prices in the news and the threat of global warming increasingly apparent, switching to alternative energy has found its way into everyday discussion. People all around the world are trying to figure out how best to make the change to more sustainable forms of energy. Several different options exist, but each one has its positives and negatives.

Anyone who has seen trucks shipping the pieces of a wind turbine can tell you how gigantic these machines are. They harness the natural power of the wind to provide electricity in windy regions. But, the necessarily large size often bewilders people who live nearby who often see them as a blemish on otherwise pretty country. Some also blame turbines for killing large amounts of birds that crisscross certain areas.

Solar power went through a sort of heyday for individual users a few decades ago. Many people built houses powered this way and even sold electricity back to the grid. Now many countries with a lot of sunlight are setting up large collection sites. Often, they set up mirrors that reflect sunlight onto a series of solar panels. This helps collect the sunlight more efficiently. Unfortunately, the set-up costs for these sites can be quite expensive.

Large hydroelectric power projects often make the news due to the fact that they often involve multiple governments negotiating where to set them up and how they will affect nature and human populations. As water flows through dams, turbines rotate and produce electricity without the dirty emissions from carbon-based sources.

Tidal energy, though, is more like a dam in the ocean. Placed of the coast, these stations take advantage of the movement of the tides due to the gravitational pull of the moon. But, many cry foul when they see how the stations are built, claiming that not enough is known about how sea life will respond to them.

We would all be so lucky to have geothermal power at our disposal, though. This comes from naturally heated water from deep inside the ground. This can be used for hot water, naturally. But, more importantly, this hot water can heat homes in the winter as well. The small island nation of Iceland utilizes this type for a large part of its population.

For most developed countries, the problem is one of changing directions. So much effort has gone into constructing infrastructure around a coal-based ideas, it is hard to just stop and change course. More funding and government incentives will be needed to help individuals and companies adapt to this. In less developed countries, the sheer cost of the technologies is prohibitive. They often end up using much dirtier sources of power such as burning coal or wood. In the end, more money needs to be funneled towards shifting the kind of energy we use.

At some point, something will have to be done about how we use the resources available to us. Different forms of alternative energy may have to be used in conjunction to start meeting the needs of an increasingly populated planet. The question is, which technology will take the lead and how will we finally get enough money in the sector to really make it take off.

With so much research in recent years, renewable energy is finally affordable. Homeowners can find solar panels for sale at their local home improvement stores.