Japan opts for wind and hydrogen to help achieve its green future

Japan is seeking to develop alternative energies such as offshore wind and hydrogen, which can adapt to the country’s geography, but also to the climate events it experiences.

Producing alternative energy is a priority for Japan. The country aims to reach between 36%-38% of renewable power supplies and reduce its greenhouse emissions by 46% by 2030, and energy policies will be one of the issues at the top of the agenda at the G7 Summit to be held in Japan in mid-May.

Its technology is at the forefront of this green revolution, and in this latest episode of Spotlight, we travel to the remote Goto Islands in the Prefecture of Nagasaki, in the South of Japan, to visit a milestone offshore floating wind farm.

Goto’s floating wind farm

With limited land but a large coastal area, offshore wind power could be the answer to Japan’s future energy needs, but it comes with challenges.

Goto is one of the most hard-hit typhoon areas in Japan, a strategic testing zone for the resistance of these floating turbines.

Japan relies on both floating and bottom-fix turbines to generate power. The bottom-fix wind power station of Akita was the first large-scale offshore wind farm in the country. Both types are adapted to Japan’s complex topography and natural disasters.

“The fixed type has to be fastened to the seabed, but in Japan the sea gets deep very quickly,” explained Ushigami Kei, the Executive manager of Goto Floating Wind Farm LLC.

Ushigami Kei, Executive manager of Goto Floating Wind Farm LLC

“It is built by setting first a foundation on the seabed, so it is affected by the topography and geology of the seabed. The floating type is connected by a chain, but it is strong against earthquakes because it is not affected by the sea ground topology.”

The challenge for these floating structures is to deal with typhoons and the power of waves. Stabilisation mechanisms take knowledge from shipbuilding technology to minimize the swaying.

“The structure is designed to be stable by lowering the centre of gravity with heavy concrete elements on the lower part of the floater. This makes the structure resistant to the strong winds of typhoons,” Ushigami Kei added.

Ground surveys play a key role in designing cutting-edge facilities like Goto’s to withstand natural disasters.

Professor Ishihara from the University of Tokyo is one of the most renowned engineers working on risk evaluation of wind.

“In the case of Japan, not only are very strong typhoons blowing, but the usual winds are not very strong. Therefore, we need to solve those two problems at the same time,” he explained.

Professor Ishihara, University of Tokyo

“One solution is to lengthen and slim down the blade. By increasing the length, the normal power generation also increases. Thinner blades also reduce excess wind during typhoons. By using Japanese carbon fibre technology, it is possible to create very long, thin and strong blades.”

Goto Wind Farm will start commercial operations in January 2024.

Hydrogen cargo vessels

The port of Kobe is home to the world’s first liquified hydrogen carrier. Hydrogen is another clean energy that Japan is focusing on. It was the first country to draw up a hydrogen strategy in 2017.

Now it is planning an ambitious new target to boost annual supply to 12 million tonnes for 2040. Hydrogen is produced in Australia and shipped to Japan by sea, freezing it to minus 253 degrees Celsius and compressing it into a liquid.

It has done the round trip twice since it was launched in 2021.

“Here we have the hydrogen tank, here in blue you have the mouth and under there is the tank. The size of the tank is 1,250 cubic meters,” revealed Yamamoto Shigeru, the Executive Officer and Deputy General Manager of the Hydrogen Strategy Division for Kawasaki Heavy Industries, Ltd.

Yamamoto Shigeru, Executive Officer Deputy General Manager Hydrogen Strategy Division Kawasaki Heavy Industries, Ltd speaks to Euronews

Kawasaki Heavy Industries has developed a full hydrogen supply chain in Kobe, providing heat and power supply to the urban area.

Japan relies largely on the import of hydrogen. To use it as a regular energy source, it is necessary to reduce the costs.

“The cost of hydrogen can be reduced by transporting it in larger quantities. In order to bring the cost down to the same or even less than fossil fuels it is necessary to scale up first,” Yamamoto Shigeru explained. “To reach that purpose, we will build large ships and also large tanks at the receiving base. We would like to create a larger infrastructure and scale it up for commercialisation.”

The next project is a large-scale vessel more than 100 times bigger.

With this focus on innovation, Japan is pioneering the global clean energy transition and moving closer to achieving its climate change ambitions.

Out of Compute North’s Bankruptcy #prizmabet Rises a 300MW Bitcoin Miner With a Novel Energy Offering

Born out of the ashes of the Compute North bankruptcy, the new venture aims to give clients control over their energy strategy.

A group of energy and bitcoin mining veterans are developing a 300-megawatt (MW) hosting site in Corpus Christi, Texas, that will give customers an unusual option on how they manage their electricity costs.

The site will be connected to the grid and will be co-located with an additional 300 MW battery storage facility. Customers will be able to form their own power management strategy and decide if and how they participate in demand response programs.

The firm building the site in Texas is called Saxet Infrastructure Group. The all-in hosting fee won’t be fixed. Rather, Saxet will pass variable energy costs onto its customers and charge a fixed management fee that will be lower than that of many of its competitors, the firm said.

Electricity is usually miners’ biggest operating expense. Many hosting contracts that were signed during the 2021 bull market had a fixed price, which included an energy and management fee. Those fees became unsustainable for hosting firms during the energy crisis of 2022.

“In a fixed-price hosting market, as we’ve seen the market shake out, one party usually ends up losing,” either the customer is signing up for a fixed price that turns out to be too high or the price is too low, and so the infrastructure partner hosting partner is at risk, said Ro Shirole, who left retail-facing hosting firm Compass Mining to join Saxet as its chief commercial officer.

Crypto winter casualty

The site in Corpus Christi that Saxet is building also took a hit from this common hosting conflict.

Compute North, which had been one of the largest players in the hosting business, filed for Chapter 11 bankruptcy in September 2022. A declining bitcoin (BTC) price and the company’s relationship with its biggest lender, Generate Capital, which ended up taking over Compute North’s stake in another two of its sites, were partly to blame.

But another problem was that Compute North’s services agreements didn’t allow it to pass through energy costs. The company could only turn off its customers’ machines when energy prices exceeded a certain level. “While this mechanism helps to manage expenses during a period of high power costs, it is not an effective strategy for addressing long-term energy price increases,” Compute North Chief Financial Officer Harold Coulby said in a filing with the U.S. Bankruptcy Court in southern Texas.

Two of Saxet Infrastructure’s executives, CEO Steve Quisenberry and Chief Operating Officer Matt Held, were also partners at Bootstrap Energy, a company that Compute North had hired to develop the Corpus Christi site in March 2022. Bootstrap Energy also owns the land that the site is on. Shirole left Compute North in December 2021 and has filed an employment discrimination lawsuit against the firm.

Compute North stopped paying the development firm in the summer of 2022, and as of the bankruptcy date, it hadn’t made $14.9 million in payments. The bankruptcy court rejected the development contract, and so Bootstrap Energy was back on the saddle to develop the site.

Location, location, location

The site’s location provides several advantages, Held said. The relatively moderate temperature in the south of Texas, near the sea, is much cooler than other parts of Texas, including West Texas where a lot of miners have flocked. It is also situated at lower altitude, making for denser air. The lower temperatures and more humid environment helps reduce the costs of cooling machines.

The area is also home to almost 7 gigawatts of wind power generation, with winds not dying down in the afternoon, as it does in West Texas, Held said. Demand for electricity in the area is fairly stable because it is home to industrial facilities that require stable amounts of power throughout the day and few population centers, he said.

Looking ahead

The site is still under construction and the Saxet team is now signing contracts with tenants. Saxet has secured all the capital needed for the construction of the site from a New York multibillion-dollar private-equity firm and a private investment group. The funding will be released once Saxet has reached a minimum scale of customers, Quisenberry said.

The new firm expects the full 300 MW of hosting capacity to be up and running by the end of the year.

Saxet is taking contracts only for larger than 25 MW from institutional clients in order to be able to execute its tailor-made power management strategies, Shirole said.

“Quite a few of the large-scale miners that we’ve walked through the structure on this, truly view this as the future for at-scale mining,” Shirole said.

The strategy, however, can also change over time as both the market and regulations change, and customers will be reviewing their power strategies on a regular basis, the Saxet executives noted.

“The full transparency of energy pricing with our clients is the key to what we’re doing,” and for the industry in general, Quisenberry said.

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