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Maguire: UK and Japan's bioenergy plans threaten climate change in a new way

In recent years, the fuzzy labelling of bioenergy has led to its expansion in global power systems. It is often used as a substitute for coal in countries that are committed to reducing fossil fuel usage in power production.

Bioenergy plants are plants that burn organic material known as biomass in order to produce electricity. They are often grouped with solar, wind, and hydroelectric plants as forms of renewable energy.

The rapid growth of bioenergy capacity is a new climate threat, as it could promote further deforestation.

The United Kingdom and Japan are building the largest pipelines of bioenergy outside China. This means that developed nations can play a major role in pushing biomass usage to new heights in the next few years.

GROWING PIPELINE

Global Energy Monitor (GEM) reports that the UK and Japan account for almost 30% of bioenergy capacity currently under construction.

The 1,200 megawatts of bioenergy capacity in Japan and the UK, which are currently under construction, fall short of China's 3,400 MW.

Once construction is complete, these totals will still lead to a sharp increase in bioenergy capacity both in Japan and in the UK.

GEM data indicates that Japan's bioenergy capacity will increase by 36%, while the UK capacity will rise by 20% when the new projects are operational.

These capacity expansions will increase the influence of bioenergy plants in national power generation systems.

Shares Expanding

Over the last decade, the share of electricity produced by bioenergy power plants has steadily increased in Japan and the UK.

According to Ember, the energy think-tank, bioenergy plants in Japan will account for 6% of total electricity production by 2024. In the UK, that percentage is 8%.

2024 marked the highest ever bioenergy generation in both countries.

Japan's bioenergy plant produced almost 46 terawatt-hours (TWh), a record, in absolute terms. This is a 7% increase from 2023.

The UK's bioenergy-fired electric output in 2024 was 18,8 TWh, the second highest since the record of 19 TWh set in 2021.

The UK total is 41% higher than the 2023 bioenergy production tally, thanks to an increase in production that was sustained late last year, as bioenergy plants offset the loss of generation at the UK's final coal plant.

Emissions Impact

Growing volumes of bioenergy production have led to a corresponding increase in emissions from plants.

Bioenergy plants in Japan released 10 million metric tonnes of carbon dioxide from January to October. This was a 7% increase over the same period in 2023, and the highest ever.

Bioenergy plants in the UK released around 4.3 millions tons of CO2, just a little short of the record set for 2021 of 4.4million tons.

These totals pale by comparison with the emissions from fossil fuel plants during the same period. Japan's total for fossil fuels fired was 330 millions tons, while the UK's total was 41 million tonnes.

While fossil fuel usage in both countries is likely to have peaked, the bioenergy pollution will continue to rise, especially when new capacity projects are completed.

The UK, Japan, and other countries will need to deforest large areas of woodland to provide the biomass for bioenergy plants. This will have a negative impact on the regional and global climate system.

The UK imports wood chips and pellets primarily from the United States and Canada, while Japan gets its wood pellets mainly from Indonesian ancient rainforests.

The impact of bioenergy plants on the environment will be felt far beyond the borders of Japan and the UK. This may lead to further climate change by accelerating deforestation elsewhere.

These are the opinions of the author who is a market analyst at.

(source: Reuters)