Today I’m going to talk about solar energy, to be more specific, solar energy in houses as an alternative resource for the future. Maybe some of you already know a little about this topic. But for those of you that are not very familiar with this, I’m going to cover the following themes: the problem we are facing, a possible solution, the best alternative, which is Solar Energy, its uses and my conclusion. We are used to hearing about global warming, the greenhouse effect and the lack of fossil fuel, but do we really know where we are heading in the future?

Global warming is something that we really should be worried about; the earth’s temperature is getting hotter every day, producing the melting down of glaciers, increasing the sea level, causing stronger hurricanes, destroying coral reefs, adding to the extinction of species, destroying forests, etc. Large cities are facing these problems too, and also they are facing pollution, because of the hydrocarbon gases that cars, factories, and power plants are spewing out. We can make a change in our lives by thinking “green.

We can use other sources of energy like biofuels, biomass, geothermal, hydro power, wave power and wind power; so there is not only one solution to our problems. We can use biofuels instead of fossil fuels for cars. For the electric system in the cities we can use wave, wind or hydro power. We can use biomass to recycle the trash and use some organic wastes to turn it into energy. However, the most popular of all these alternative energies is solar, which consists of storing energy by using the beams and the heat of the sun, converting sunlight into electricity to power up houses, greenhouses, and buildings.

Solar energy is not as new as you may think. It has been used since the 1970s and was first developed in the early 1880s, when the first photovoltaic cell was created by Charles Fritts. As a fact, the International Space Station is powered by this energy, and the collector cells are not so different from the ones that we have on earth, so we can use it in our homes too. If we use solar energy in our house, generally, we would need three things: the cell, an electrical feeder and, of course, sunlight. This may sound easy, but it is not.

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Actually, you need to invest a lot to modify the electrical system of the house, but it is totally worth it because you would power your house totally free and naturally with sunlight. You do not need to pay for electricity anymore, and you can help reduce the pollution from power plants. Also, you would recover your investment in maybe two years, which sounds pretty good. The uses of solar energy are not only for electricity; however, it is the most practical because you can use it for cooking, cooling and heating. Solar energy is most common for heating water in pools or inside the house.

There are several companies that are already working in this field, so now it is cheaper to buy solar cells nowadays. In conclusion, I think that we should care more about our future, no matter what energy we use. In fact, it is better if we use all of them for different situations, but we need to be responsible about our environment. Otherwise prices for gas, electricity, water, etc. will be very high, and maybe the country will enter into a new crisis. It’s our duty to pass to the new generation a clean planet, so they can enjoy it as much as we are doing now.

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