28 Feb 2017

A proposed 'Asian Super Grid' is attempting to pave the way for global access to affordable, reliable, sustainable and modern energy for all by 2050. Major energy companies in China, Japan, Russia and South Korea recently signed an agreement to investigate the economic and technical feasibility, but even supporters are concerned about the political feasibility.

The Asian Super Grid is the brainchild of Japanese telecom and internet tycoon, Masayoshi Son, who just became Japan's wealthiest person after his company Soft Bank Group announced plans to invest $50 billion in America's tech sector. Following the devastating Fukushima nuclear meltdown in 2011, Son delved headlong into renewable energy development without any prior experience.

The cost of renewable energy is dropping daily. By 2025, it will likely be cheaper than traditional carbon-emitting sources, according to a Beijing-based nonprofit Global Energy Interconnection Development and Cooperation Organization (GEIDCO), eliminating the excuse that clean energy is too expensive. However, renewables have been notoriously inconvenient to implement for human use.

Renewable sources generate power inconsistently. Excess bursts on a particularly sunny or windy day are wasted without grid-level battery storage technology that Tesla's Elon Musk is working to implement affordably and practically.

A super grid, on the other hand, would transmit the surplus to locations that need it. The sheer scale of the super grid would also allow it to continue harvesting solar energy across time zones and accommodate wind variability north to south.

Asian Super Grid proposal from Japan Renewable Energy Foundation

With nine regional interconnected grids already functioning in China and several more in the works, the technical feasibility of transmitting electricity across long distances at high voltages is proven.

Connecting across a large body of water would require a submarine cable, but that, too, exists between Norway and the Netherlands. In fact, the cable length there is comparable to the one needed for the Asian Super Grid's first connection between Japan's Kyushu and South Korea about 500 km.

Technically, it's absolutely doable, said Scott Valentine, associate professor of environmental and energy policy at the National University of Singapore's Lee Kuan Yew School of Public Policy, in an interview with Humanosphere. The question is at what cost is it doable?

GEIDCO estimates that achieving global energy interconnection by 2050 would cost about $50 trillion. How interconnection would work economically, though, would be rooted in free trade.

Let's connect Japan to other Asian countries, and make them compete, Son told lawmakers in 2012, according to the Wall Street Journal.We import oil and gas. What's wrong with importing electricity?

But Valentine noted that an Asian Super Grid may not be as economically appealing to China and Russia, the primary vendors, as it would be to the primary and isolated consumers Japan (a chain of islands) and South Korea (which is in no position to share energy with its northern counterpart).

China and Russia, on the other hand, could plug into the ASEAN grid or the European/Baltic grid respectively if they so desire.China, too, may prefer to keep its competitive advantage in industrial development with its super-low carbon energy costs.

That's why China's invested in coal-fired power plants, Valentine said, despite growing renewable capacity.

While GEIDCO is based in Beijing and led by the former chairman of China's State Grid, Valentine also noted that national leaders have yet to sign on to the idea.

We still haven't addressed any of the historical animosities that exist, Valentine said.Any sort of vendor relationship is going to leave the power with China and Russia, and I don't know to what extent politicians in Japan and South Korea are really going to want to cede sovereignty over their energy grids to two nations who aren't their best friend.

In Valentine's opinion, the only way to address the national security concern would be to set aside a significant amount of domestic capacity in case something happens to the super grid.

Of course, if you've got to add additional energy generation capacity to your electricity grid simply because you're concerned about national security, it raises the cost of energy provision, he said.

It's also worth noting that expanding renewable energy shouldn't take an either-or approach. According to Valentine, there's good evidence to suggest that battery storage is a complementary solution to a super grid, just as microgrids would also help increase global access to clean energy.

Five years ago, I was really pessimistic about whether or not we could enact an energy transition fast enough to avert the worst perils of climate change, Valentine said. But as it stands now, I'm actually quite optimistic about this particular environmental problem.

This is a truncated version of the full article due to the author's request.The article was first published inThe Humanosphere on 9 December 2016.

The article features an interview with Scott Victor Valentine, Associate Professor of Environmental and Energy Policy at the Lee Kuan Yew School of Public Policy, National University of Singapore.