So I spent some time researching how Hitachi Digital Services runs its business—specifically through the lens of sustainability—and I have to say, I came away impressed with what the company does and how it does it. Sustainability shows up in the work itself: in the way they approach energy systems, rethink manufacturing, and build digital infrastructure that helps their clients operate more efficiently and responsibly. Podcast here. Access video podcast below or continue here to the text version (premium clients only).
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Clean Energy: Four Companies Control Half the World’s Corporate Clean Energy Purchases
Four companies, Amazon, Meta, Google, and Microsoft, bought nearly half of all corporate clean energy contracts globally in 2025. Meanwhile, everyone else pulled back, with overall volumes declining for the first time in eight years. What looks like a sustainability win is actually a story about market concentration, economic fragility, and what happens when the clean energy transition and the U.S. economy both depend on the same handful of companies making the same massive bets. In this discussion, we break down the data and explain why CIOs, energy leaders, and policymakers should be paying close attention.
