Microsoft faces investor pressure over 2030 climate target

Shareholders to vote on calls for greater climate transparency

Microsoft is facing pressure from an investor to provide more details about how it intends to meet its climate commitments, as the rapid expansion of AI and cloud computing pushes its greenhouse gas emissions higher.

Trillium Asset Management, which specialises in sustainable and responsible investing, is backing a shareholder proposal calling on the technology giant to explain how it will achieve its target of becoming carbon-negative by 2030.

Microsoft has recommended that investors vote against it, arguing that its existing environmental disclosures already provide sufficient information about its climate strategy.

Microsoft announced its environmental ambitions in 2020, pledging to become carbon-negative by 2030 and to remove an amount of carbon equivalent to all its historical emissions by 2050.

But the rapid growth of AI has created an increasing need for powerful computing infrastructure, prompting technology companies to build more datacentres to support cloud services and train increasingly sophisticated AI models.

Microsoft has benefited financially from this expansion. Its cloud division generated $214.4bn in revenue during the financial year ending 30 June 2026, an increase of 27% compared with the previous year.

However, the company's latest Environmental Sustainability Report [pdf] shows that its emissions have risen from 13 million tonnes of carbon dioxide equivalent in 2020 to 20 million tonnes in 2025.

That represents an increase of about 54% from the baseline year, although the company estimates that emissions would have reached approximately 34 million tonnes without its existing carbon-reduction measures.

Much of the increase is attributed to Scope 3 emissions, which cover indirect emissions across a company's value chain. Microsoft has also reported a growing contribution from Scope 2 emissions, which arise from the generation of purchased electricity. These accounted for 13% of its total emissions in 2025, compared with 2% in 2024.

Investors seek greater transparency

Trillium is urging shareholders to support Proposal 4, which would require Microsoft to publish additional annual information explaining how it plans to manage its climate commitments.

The requested disclosures would go beyond the company's existing reporting, while allowing it to protect commercially sensitive information and keep costs reasonable.

In its filing with the US Securities and Exchange Commission (SEC), Trillium argues that Microsoft's emissions are now substantially above its 2020 baseline and that investors need a clearer understanding of how the company intends to get back on track.

Trillium says the company should explain its calculations, outline its plans for reducing emissions and show how it would respond if progress fell short of expectations. The proposal also warns that failure to meet the 2030 target could damage Microsoft's credibility and undermine investor confidence.

Trillium says a clearer climate transition plan would be particularly valuable to large institutional investors, many of whom regard climate change as a significant long-term risk to economic growth.

Microsoft urges shareholders to reject proposal

Microsoft has advised investors to vote against the proposal, saying Trillium has not demonstrated that the company's existing disclosures are inadequate for assessing its climate strategy and performance.

In a separate SEC filing, the company states that the requested information would extend beyond both legal and regulatory requirements.

Microsoft also objects to requests for hypothetical scenarios and other forward-looking information, saying such material is inherently uncertain and may change over time. Instead, the company says it will continue to publish its Sustainability Report and other environmental disclosures.

The proposal is due to be considered at Microsoft's annual shareholder meeting on 8 December.

Computing says:

It’s good to see a hyperscaler finally being held accountable for lack of progress towards its self-imposed climate targets. Microsoft generated good PR from making the strongest commitments among the hyperscalers for carbon neutrality. In addition to the 'carbon neutral by 2030' pledge, the company pledged in 2020 to remove all carbon it had emitted directly or through electricity consumption since its founding in 1975 by 2050.

It is abundantly clear that Microsoft will come nowhere near meeting these pledges. Not only is the AI-driven CapEx bonanza resulting in an enormous increase in Scope 3 (indirect) emissions, but Microsoft is also using vastly more electricity, so Scope 2 emissions are also heading in the wrong direction. Worse, delays in grid connections means that Microsoft, along with every other hyperscaler is, in addition to buying renewable energy certificates and carbon credits, commissioning off-grid natural gas turbines to get new datacentre projects off the ground. The idea that AI datacentres can be powered with sustainable power sources is for the birds.

Every year Microsoft’s ESG report invariably contains the words “we know we need to do better” but the contrast between what Microsoft says it must do and what it does grows wider every year. It needs to be held accountable for that, and at Computing, we hope shareholders vote for this proposal.