lunedì 27 maggio 2019

a 2018/2019 update on the global consumption of fossil fuels and renewables

Hopes that global CO2 emissions might be nearing a peak have been dashed by preliminary data showing that output from fossil fuels and industry will grow by around 2.7% in 2018, the largest increase in seven years.

Updated 28 March 2019 – Energy demand worldwide grew by 2.3% last year, its fastest pace this decade, an exceptional performance driven by a robust global economy and stronger heating and cooling needs in some regions. Natural gas emerged as the fuel of choice, posting the biggest gains and accounting for 45% of the rise in energy consumption. Gas demand growth was especially strong in the United States and China.
Demand for all fuels increased, with fossil fuels meeting nearly 70% of the growth for the second year running. Solar and wind generation grew at double-digit pace, with solar alone increasing by 31%. Still, that was not fast enough to meet higher electricity demand around the world that also drove up coal use.
As a result, global energy-related CO2 emissions rose by 1.7% to 33 Gigatonnes (Gt) in 2018. Coal use in power generation alone surpassed 10 Gt, accounting for a third of total emissions. Most of that came from a young fleet of coal power plants in developing Asia. The majority of coal-fired generation capacity today is found in Asia, with 12-year-old plants on average, decades short of average lifetimes of around 50 years.

Renewables increasingly central to total energy consumption growth

The share of renewables in meeting global energy demand is expected to grow by one-fifth in the next five years to reach 12.4% in 2023.
Renewables will have the fastest growth in the electricity sector, providing almost 30% of power demand in 2023, up from 24% in 2017. During this period, renewables are forecast to meet more than 70% of global electricity generation growth, led by solar PV and followed by wind, hydropower, and bioenergy. Hydropower remains the largest renewable source, meeting 16% of global electricity demand by 2023, followed by wind (6%), solar PV (4%), and bioenergy (3%).
From https://www.iea.org/renewables2018/
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