Son of Icarus

SoftBank's solar ambitions fly close to the Son

Masayoshi Son is flying close to the sun with his solar power ambitions. The SoftBank chairman has pledged to invest $20 billion in developing solar energy plants in India in the coming years through a majority-owned joint venture with India's Bharti Enterprises and Taiwan's Foxconn. India's need for energy investment is clear but the synergies with the Japanese group's existing businesses look dubious.

The $72-billion company is best known for its Japanese telecom operations, controlling stake in US mobile carrier Sprint, and 32 per cent stake in Chinese e-commerce giant Alibaba. Less well known is its expansion into renewable energy following Japan's earthquake in 2011. It now has 19 power plants in the country with a total output scale of 139 megawatts, and plans to expand capacity to 453 megawatts in the coming years.

That is still a tiny fraction of the 20 gigawatts that Son has pledged to generate from solar in India - equivalent to one-fifth of the government's total target by 2022. As the joint venture's controlling shareholder, that puts SoftBank on the hook to raise project financing of at least $10 billion over the coming years.

SoftBank must first win government contracts to develop solar plants, so its actual outlay may be much lower. Yet it still leaves investors with the problem of making sense of what SoftBank can bring to renewable energy. The company's board questioned Son's move into the business back in 2011, prompting the chairman to promise that total expenses would be no more than 1 per cent of SoftBank's total assets, which stood at 16.7 trillion yen ($162.2 billion) at the end of March 2014. It's hard to see how the Indian foray can be reconciled with that spending cap.

Son may see potential for selling electricity to Indian mobile phone users, where Bharti is the leading player. But SoftBank has yet to clearly demonstrate the link works in Japan, where its renewable investments are at a much more advanced stage. Shareholders can only hope the board clips the chairman's wings before he flies even closer to the sun.