Choosing The Sustainable Energies Of The Future
There is a lot of attention being paid to Bio Fuels (like ethanol) these days as a solution to energy security for countries, but an analysis of this fuel's use for the future dictates that there should be serious caution applied to using agriculture for energy. Creating bio fuel from indigenous plants and waste agriculture outputs is an excellent process and makes sense, but excessive bio fuel production through dedicated land utilisation at the expense of the sustainability of the soil and water resources is the primary concern.
Some commercial bio fuel crops can promote an over utilisation of fresh water resources in order to grow them. Already we can see the price of wheat and its world availability for food being affected by farmers switching to growing more profitable bio fuel crops instead. The combustion of bio fuels still creates CO2 gas and other pollutants, whereas if humanity concentrates on the development of all available wind turbine, geothermal, and solar energy resources, there are instead zero emissions from these sources of energy. Wind turbines, geo thermal, solar thermal, and solar voltaic power plants generating electricity can be designed to last 100 years with scheduled maintenance, so once they are fabricated and installed they become zero emissions sources of energy for a long time. These types of renewable energy become excellent investments for utilities and energy farm companies when the cash flows are considered over the long term.
Already through global warming, the rising Earth temperatures are causing global sources of fresh water to be reduced. Bio fuels can consume water intended for humanity and other species and can cause bio fuel plants to be grown on soil without much crop rotation. The combustion of significant amounts of bio fuel will only add to the current CO2 levels, which are continuously rising from all pollution sources. Fields used for growing bio fuels do not, in most cases, provide zero balancing of bio fuel CO2 emissions as some would argue, because another type of food crop would be grown there that would produce similar CO2 to O2 conversions.
The real issue is that there are many other clean energy alternatives to promote before bio fuels. A farmer's field can support both wind turbines for electricity generation and also produce crops for humanity to eat. Wind, solar, and geo thermal energy sources have the capability to provide all the power humanity needs with virtually zero impact on the environment. Humanity needs to work hard to fabricate and install zero emissions sustainable energy sources while at the same time applying conservation techniques as the Dutch do in the utilisation of bicycles and the development of public transportation infrastructures.
There are concerns from some scientists about a significant implementation of bio fuel energy because the overall impact assessment is not being identified as part of the argument for this energy, nor an assessment of whether this is the correct route for us to take to ensure the sustainability of humanity on Earth.