Microsoft, Alphabet executives defend data center expansion at climate meetings as emissions surge

At Climate Week NYC, executives from Microsoft and Alphabet stood in front of rooms full of climate-conscious attendees and essentially said: yes, we know our emissions are climbing, and yes, we’re going to keep building data centers anyway.

The remarks came against a backdrop of sustainability reports that made for uncomfortable reading. Microsoft’s emissions jumped 25% year-over-year in 2025, reaching 20 million metric tons of CO2 equivalent. Alphabet wasn’t far behind, posting an 18% emissions increase driven largely by supply-chain activities.

The numbers behind the expansion

The core issue is electricity. Google’s power demand surged 37% in 2025, marking the largest single-year increase the company has ever recorded. Microsoft’s electricity consumption grew by 24% over the same period.

To put that in perspective, hyperscale data centers don’t just need a lot of power. They create concentrated electricity loads that can strain entire local grids, pushing utilities to fire up dirtier generation sources to keep the lights on for everyone else.

Microsoft has tried to soften the blow with community-focused commitments. The company has pledged to cover the full power costs associated with its data centers and has gone so far as to reject certain local tax incentives.

Clean energy purchases vs. dirty reality

Both Microsoft and Alphabet are making large-scale renewable energy purchases. They’re investing in solar, wind, and emerging technologies like geothermal and next-generation nuclear. In practice, the clean energy buildout isn’t keeping pace with the demand growth.

The tension is perhaps best illustrated by Microsoft’s partnership with Chevron on natural gas plants in Texas designed to power data centers. Natural gas is cleaner than coal, but it’s still a fossil fuel, and pairing up with one of the world’s largest oil companies to support AI infrastructure doesn’t exactly scream climate leadership.

Alphabet has been pursuing its own mix of solutions, including water replenishment programs aimed at offsetting the massive cooling requirements of modern data centers.

Community pushback and shareholder scrutiny

The executive appearances at Climate Week NYC weren’t happening in a vacuum. Local communities near proposed and existing data center sites have been organizing protests, raising concerns about noise, water consumption, and the impact on local power grids.

Shareholder resolutions have added another layer of pressure. Investors are asking pointed questions about whether the rapid pace of data center construction is compatible with the climate commitments both companies have made.

Microsoft’s decision to reject local tax breaks in some cases appears designed to neutralize one of the most common community complaints: that tech giants extract enormous local resources while minimizing their tax contributions.

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