File picture: Siphiwe Sibeko/ Reuters
INTERNATIONAL - More of the world will run on electricity in the future, but most of the power won’t be clean. This is the key message from the latest report on investment trends by the International Energy Agency (IEA) released yesterday.

The Paris-based organisation said electricity generation attracted more capital than oil and natural gas for the second year in a row, but investment in renewables declined and was expected to keep falling.

Running the economy on electricity is only one part of the energy transition. The question of where the power comes from is also key.

Electrifying transport will reduce air pollution in cities, which is largely attributed to nitrogen oxide emissions from vehicles, but the issue will not ultimately be solved if they are simply replaced by carbon dioxide and other pollution from fossil-fuel power plants.

“Global investment in renewables and energy efficiency declined by about 3percent last year and, more importantly, it could slow down once again this year,” Fatih Birol, the IEA’s executive director, said by telephone. “This is a worrying trend, especially when we think of our clean-energy transition goals and the implications for energy security, climate change and air pollution.”

The electricity industry attracted $750billion (R10trillion) in 2017, thanks to robust spending on grids. That’s compared with $715bn that flowed into oil and gas supply.

About $298bn was invested in renewable power generation, down 7percent from the previous year.

A rise in electrification is expected across almost all sectors, from transport to heavy industry. The IEA said earlier this year that it projects the global fleet of electric vehicles will more than triple by 2020. Global sales of electric cars totalled $43bn in 2017.

The share of fossil fuels in the global energy supply rose for the first time since 2014 to just under 60percent as spending rose in oil and gas and new power plants were built out in Asia. The sector attracted $132bn of investment.

Globally, coal has declined, but there are still at least 30gigawatts of new plants about to be constructed, largely in developing countries. The average age of a coal plant in Asia is 11 years old, compared with 40 in Europe and the US, so existing plants will also be operating for decades to come.

While some of the decline in renewables investment can be attributed to the decrease in equipment costs, such as solar panels and wind turbines, growth in capacity additions was also lower, according to Birol. This is because of changes in government policy, he said.

“This is mainly a result of the investors seeing political uncertainty,” he said. “Therefore, there are hesitations from investors in part to put money in the renewables sector.”

China, the world’s largest market for renewables, recently amended its policy on solar photo-voltaics, slashing domestic installations. This move may cause the price of modules to tumble as much as 35percent by the end of the year, according to estimates from Bloomberg NEF analysts.