Mar 8, 2019

Japan and Britain: perfect smart energy transition partners

Chris Wright
4 min
Japan and Britain: perfect smart energy transition partners
By Chris Wright, Chief Technology Officer, Moixa

By Chris Wright, Chief Technology Officer, Moixa

How Japan’s corporations are making the country a world leader in clean technology – with a little help from British innovation.

Energy island

Japan is isolated from the Asian mainland by more than just the Sea of Japan. It is what we call an ‘energy island’ – it is reliant on homegrown energy, rather than importing from abroad. 

In recent years, this energy isolation, coupled with earthquakes, floods and other natural disasters, has resulted in widespread power outages across the country. Homeowners are reacting by turning to solar and storage systems to reduce their dependence on the grid.

This perfect storm has resulted in Japan developing the world’s fourth-largest solar market, with 11GW of home systems, and a leading home energy storage market, with more than 125,000 batteries installed by 2016. It is also one of the world’s top three countries for electric vehicles, with more than 200,000 on its roads.

What’s more, Japan’s feed-in-tariff (FIT), introduced in 2009, only pays homeowners for 10 years. This means many people are coming to the end of their contracts and installing batteries to maximise self-consumption of their own solar power.


Opposites attract

Japan’s economy, which is typically dominated by huge corporations, has been adept at rolling out consumer technology on a massive scale. But these large companies aren’t always nimble enough to get on the front foot with the most cutting-edge technologies – a factor that’s needed for it to succeed in the smart-energy transition. Fortunately, that’s where British innovation can help. Britain’s culture of entrepreneurship means it has fostered SMEs that are developing the world’s most innovative software technology.

It’s axiomatic that opposites attract. Translate that to business, and it means each party can provide something that the other is lacking, to deliver a greater positive impact. By combining Japan’s ability to roll out clean technologies en masse with Britain’s state-of the-art tech ingenuity, we can begin to see the smart-energy transition being delivered [see box out].

The world’s largest cluster of live batteries

UK smart-battery company Moixa has rolled out its GridShare AI platform to manage batteries for 4,000 Japanese homes – believed to be the world’s largest live cluster of batteries, with a combined capacity of more than 40MWh.

The project is the result of a partnership between Moixa, ITOCHU Corporation, one of Japan’s largest trading houses, and TRENDE Inc., a new venture of TEPCO Ventures Inc., a subsidiary of the country’s biggest utility, Tokyo Electric Power Company Holdings Inc. (TEPCO).

At an event at the British embassy in Tokyo in October the partners also launched a new smart tariff enabled by Moixa’s GridShare that will reward home battery owners with lower prices for using electricity outside peak times.

AI-enabled GridShare is now included in ITOCHU’s Smart Star home energy storage systems to deliver increased resilience, reduced costs and more environmental benefit for users.


The software can also manage large fleets of batteries, aggregating owners’ spare capacity to act as a virtual power plant, importing and exporting energy to deliver services to the electricity grid. ITOCHU is selling 1000 of its 10kWh Smart Star L systems a month, so in a year Moixa could be aggregating more than 100MWh of flexible capacity.


Of the venture, UK Energy and Clean Growth Minister Claire Perry said: “This AI platform by Moixa is a great example of our modern industrial strategy going global. With intelligent management of batteries designed with UK government support, Moixa is exporting its GridShare technology and knowhow so consumers in Japan can save money by using energy outside peak times, or in the future make money when using electric vehicles.”


The benefits won’t only be felt in Japan. Moixa is currently using GridShare across the UK in partnership with major utilities, network operators and public bodies, such as the European Regional Development Fund, the Department for Business Energy and Industrial Strategy, the Department for Energy and Climate Change and Innovate UK

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May 5, 2021

AES Corp seals 10-year carbon-free energy deal with Google

Dominic Ellis
3 min
AES Corporation will ensure energy powering Google's Virginia data centers will be '90% carbon free'

The AES Corporation has struck a 10-year supply contract with Google to provide near-carbon-free energy to power its Virginia-based data centers which will start later this year.

Claiming the first clean energy procurement deal in the world of its kind, AES will help ensure that the energy powering those data centers will be 90% carbon-free when measured on an hourly basis.

AES will become the sole supplier of the data centers' carbon-free energy needs on an annual basis, sourcing energy from a portfolio of wind, solar, hydro and battery storage resources to be developed or contracted by AES.

The agreement marks an important step in meeting Google's previously announced goal to run its business on 100% carbon-free energy on an hourly basis by 2030.

"Last year, Google set an ambitious sustainability goal of committing to 100% 24/7 carbon-free energy by 2030. Today, we are proud that through our collaboration with Google, we are making 24/7 carbon-free energy a reality for their data centers in Virginia," said Andrés Gluski, AES President and CEO. "This first-of-its-kind solution, which we co-created with Google, will set a new sustainability standard for companies and organizations seeking to eliminate carbon from their energy supply."

"Not only is this partnership with AES an important step towards achieving Google's 24/7 carbon-free energy goal, it also lays a blueprint for other companies looking to decarbonize their own operations," says Michael Terrell, Director of Energy at Google. "Our hope is that this model can be replicated to accelerate the clean energy transition, both for companies and, eventually, for power grids." 

AES assembled the 500MW portfolio from a combination of AES' own renewable energy projects and those of third-party developers, which were selected, sized and contracted to meet Google's energy needs across a number of considerations, including cost efficiency, additionality and carbon-free energy profile.

The portfolio assembled by AES is expected to require approximately $600 million of investment and generate 1,200 jobs, both permanent and construction, in the host communities. These efforts will greatly simplify Google's energy procurement and management at a competitive price while decarbonizing Google's load and the broader PJM grid.

This supply agreement follows on the strategic alliance AES and Google formed in November 2019 to leverage Google Cloud technology to accelerate innovation in energy distribution and management and advance the adoption of clean energy. AES is pioneering greener, smarter energy innovations, with the goal of expanding the services available to large-scale corporate customers.

The Impact Challenge on Climate commits €10M to fund bold ideas that aim to use technology to accelerate Europe’s progress toward a greener, more resilient future. Selected organisations may receive up to €2M in funding and possible customised post-grant support from the Google for Startups Accelerator to help bring their ideas to life.

Last year it issued $5.75 billion in sustainability bonds to fund ongoing and new environmentally or socially responsible projects. To read its 2020 Environment report, click here.

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