biomass energy advantages disadvantages

The Advantages and Disadvantages of Biomass Energy

As the various issues caused by our use of fossil fuels come to light, more is being done to find suitable alternatives.

While the likes of solar power, wind turbines and similar large alternatives tend to steal the headlines, there are other fuel sources out there that also have great potential.

Many consider biomass energy to be in that latter category. As a carbon neutral fuel source, it cancels out many of the climate change issues associated with fossil fuels, plus it has other advantages besides. On the surface it appears to offer the perfect solution to a lot of the issues caused by our use of non-renewable energy sources.

This raises the question of why biomass energy hasn’t been adopted on a wider scale. Here we aim to provide an answer by looking at the advantages and disadvantages of biomass energy.

The Advantages

Biomass energy has been used in various forms long before people really spoke about energy efficiency and renewable energy sources.

This would not have been the case if this form of energy did not have its advantages. Availability of biomass fuels has always been a major reason for their use, but there are many more besides.

As the march continues towards finding alternatives to fossil fuels, biomass energy has gained prominence as a frontrunner as a good replacement.

These are the reasons why.

It Is Renewable

Renewable energy sources are those that can be replenished after use. As a lot of biomass fuels – such as wood and plant life – can be regrown, it is a truly renewable source.

As long as efforts are made to maintain the resources used for biomass energy through dedicated replanting and replenishment, it is a fuel source that has the potential to far outlast traditional fossil fuels.

The key difference between this and other renewable energy sources, such as the sun and water, is that need for maintenance. While plant life is abundant, using it without making efforts to replenish stocks can lead to large amounts of it still being wasted, as we see with deforestation.

Carbon Neutrality

The amount of carbon that is released into the atmosphere is a major contributor to climate change. Biomass reduces this because the fuel is a natural part of the carbon cycle, unlike oil and other fossil fuels.

The only carbon that is released into the atmosphere from biomass fuels is what was absorbed by the plants during their lifecycles.

As these plants are replenished, the new ones then absorb the same amount of carbon again, creating a neutrality that sees no new carbon created. This makes biomass fuels exceptionally clean.

Less Dependency on Fossil Fuels

The more we use biomass energy, the less we need to depend on the fossil fuels that are major contributors to climate change and other environmental issues.

The abundance of biomass materials available also far outweighs that of fossil fuels, making it a more readily available fuel source.

Better yet, if non-renewable materials, such as oil, aren’t being used for fuel, the limited supplies that we have can be used elsewhere.

It Is Versatile

Biomass energy is also amongst the most versatile alternatives available. It can be converted into many different fuel sources, each of which has varied applications.

For example, biomass can be processed to create biodiesel for vehicles, but it can also be used to farm methane gas and a range of other biofuels.

Furthermore, wood can be used to generate heat, while the steam produced by some forms of biomass can also power turbines to create energy.

Availability

Biomass fuels are abundant. Much like with the sun and water, they can be found practically anywhere on the planet.

This abundance means that we will not run into the issues that we currently have with fossil fuels when it comes to availability.

However, it is also crucial that this abundance is maintained. While biomass fuels will always be available because they are part of the natural lifecycle of the planet, this should not lead to irresponsibility in their use.

Low Cost in Comparison To Fossil Fuels

In comparison to drilling for oil or creating gas pipelines, the costs involved in collecting biomass fuels is extremely low.

This low cost can also be passed onto consumers, whose energy bills can then no longer be dependent on issues like availability and the decisions of the companies who supply energy.

These low costs also make biomass more attractive to producers, as they can enjoy higher profits for less output.

It Reduces Waste

A lot of the waste that we produce is biodegradable and plant matter, which could be put to more efficient use elsewhere.

Biomass energy is often able to make use of the waste that would often sit and fester in landfills. This reduces the effects that such sites have on the natural environment, which are particularly pronounced in regards to contaminating local habitats and damaging wildlife.

This reduction in waste also opens up more areas for humans to live in, as less space is needed to create landfills.

Domestic Production

Biomass fuel can also take the control of energy production out of the hands of larger companies. This means that people no longer need to be beholden to power companies and their charges.

The nature of biomass means that practically anybody could produce and use it on a domestic level.

While this does take some work, even something as simple as burning wood instead of using a central heating system can save money and have a more beneficial effect on the environment.

The Disadvantages

While the advantages of biomass are numerous, it is not a perfect energy source.

As with all sources, the disadvantages must also be considered. This is crucial if they are to be confronted properly in order to allow biomass energy to work for the people who need it.

Some of these disadvantages are related directly to the use of the fuel, whereas others are indirect consequences of its production or application.

All are important to keep in mind to have the complete picture in terms of the usefulness of biomass energy.

It’s Not Completely Clean

While biomass is a carbon neutral fuel source, it is not completely clean.

Burning wood and other plant life does create other emissions in addition to carbon. These can pollute the local environment, even if the effects are not as drastic as they may be from fossil fuels.

Some organizations, such as the Partnership for Policy Integration, point to biomass fuels as air polluters. When compared to other renewables, such as water, this lack of clean emissions is a major disadvantage.

High Costs In Comparison To Other Alternatives

While the cost of extracting biomass fuels is lower than most types of fossil fuels, they still generally exceed those of many other forms of renewable energy.

In some cases, biomass projects are considered not to be worth the price of completion, especially when solar, water and wind alternatives are available.

This cost comes from the need of biomass resources to be maintained, and for extracted biomass to be replanted. Furthermore, the cost of the machinery used in extraction is also a factor, as it transportation of the biomass.

Possible Deforestation

Though biomass fuels are renewable, they also need to be maintained. Failure to do this can lead to widespread deforestation.

This is a major environmental issue. It massively cuts down on the habitable areas available to scores of species of wildlife, leading to extinctions.

This is a major factor that holds back the use of biomass fuels on a large scale, as replanting efforts may not be able to keep up with the amount of fuel needed.

Space

A large amount of space is needed to grow the materials that are used in biomass energy. This space is not always going to be available, particularly in built-up areas, like cities.

This also limits the areas where biomass energy power plants can be built, as they need to be close to the sources of the fuel to cut down on transportation and other costs.

This makes them less favorable when compared to solar power, which requires less space and is installable in cities and other populated areas. Finally, the land used could also have been used to grow crops, which is particularly important given the large population of the planet.

It Requires Water

An often unseen disadvantage of biomass energy is the amount of water needed in production. All plants need water to live, which means sources must be available at all times.

Not only does this lead to increased costs in terms of irrigation, but it may result in water sources becoming less available to people and wildlife.

Furthermore, with water itself being an alternative form of energy, which is also far cleaner than biomass energy, it raises the question of why the water isn’t used for that purpose instead.

It Has Inefficiencies

While biomass fuels are natural, they are also not as efficient as processed fossil fuels, like petroleum and gasoline.

In fact, biodiesel and comparable biofuels are often combined with small amounts of fossil fuels to make them more effective.

This, in turn, reduces these biofuels’ effectiveness as a means to cut down on use of fossil fuel resources.

It’s Under Development

More needs to be done to harness the potential that biomass energy has. However, it is held back as an alternative fuel source by many of the disadvantages mentioned here.

When compared to the likes of solar and water sources, biomass is inefficient and under-researched.

In fact, scientists are still working on ways to make it more efficient. Until that barrier is crossed, it is unlikely that biomass energy will be adopted as a viable alternative fuel source on a wide scale.

The Final Word

The potential of biomass energy is there for all to see. It is a carbon neutral fuel source that offers lower costs that fossil fuels, while also being extremely diverse.

However, there are many issues that are holding it back from wider adoption. In particular, more needs to be done to solve the issue of efficiency as a fuel, plus issues like space and cost need to be considered.

Until this happens, it is unlikely that biomass energy will become a viable alternative for fossil fuels, though this does not mean that it doesn’t have its uses. In particular, use of biomass energy on a domestic and local level can lead to a reduction in energy bills.

Do you have any opinions about biomass energy and its potential future? Please let us know in the comments section below or share this article on social media to start a conversation.

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Featured Image Credit: Idaho National Laboratory @ Flickr

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