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Sustainability Has Moved from the CSR Report to the Balance Sheet

Ria Marwah
5 days ago
5 min read

A decade ago, sustainability lived in a CSR department, somewhere near the charity drive and the volunteering day. It was a nice-to-have, disconnected from the P&L.


That separation no longer exists. Sustainability now shows up in financing costs, investor due diligence, hiring decisions, and regulatory filings. The question for most businesses isn't whether to engage with it, but whether they're doing it well enough to matter.


Here's what the data actually shows.


Investors aren't asking nicely anymore


In PwC's 2025 Global Investor Survey of over 1,000 investment professionals, 84% said companies should maintain or increase investment in climate adaptation, even amid political pressure to scale back. That's not a fringe ESG view; it's the clear majority position among the people allocatingcapital.


But investors aren't just asking for more sustainability activity. They're asking for proof. In a separate PwC survey, 94% of investors said corporate sustainability reporting contains unsupported claims, a striking vote of no confidence in the way most companies currently communicate this work. The same research found 42% of investors had already divested from companies they felt weren't demonstrating sufficient ESG action.


The takeaway for leadership teams isn't "do more sustainability theatre." It's the opposite: investors are actively penalising vague claims and rewarding verifiable ones. Only around four in ten investors say they rely heavily on materiality assessments or sustainability disclosures to judge risk today, yet 78% say that providing this information meaningfully improves investor engagement. The gap between those two numbers is where credibility, and capital, gets won or lost.


The market is pricing sustainability into valuations directly


This isn't abstract. BCG's analysis of corporate sustainability announcements found that high-quality announcements (ones grounded in a clear, well-evidenced business case) outperformed weak ones by 1.1 percentage points in shareholder return within three days of being made public. Markets are reading the substance, not just the headline.


Individual examples back this up. Schneider Electric, having repositioned itself around energy-efficiency and decarbonisation solutions, outperformed its peer group on total shareholder return by 12% annually over five years. Antofagasta's sustainability-linked initiatives saw the company's announcements outperform its sector median by 50% over the period BCG analysed.


At the macro level, a 2025 WEF–BCG report found that companies generating at least half their revenue from green products carried valuation premiums of 12–15% over their peers, and that green revenue has grown roughly twice as fast as conventional revenue since 2020. This is no longer a story about avoiding risk. It's a story about where growth is concentrated.


Regulation is the floor, not the ceiling


The European Union's Corporate Sustainability Reporting Directive scaled back its scope in 2025, and the US SEC's climate disclosure rules remain unsettled, so it would be easy to assume the regulatory pressure is easing. The data says otherwise. PwC surveyed nearly 500 companies reporting under CSRD or ISSB frameworks and found more than half saying internal and external pressure to provide sustainability data has increased over the past year, with under 10% reporting any decrease. Over 60% had increased the resources and senior leadership time devoted to sustainability reporting in the same period.


Even more telling: among companies eligible to delay their CSRD reporting under the EU's relaxed timeline, an equal share chose to keep reporting on the original schedule anyway, driven by investor and customer expectations rather than legal obligation. The regulatory requirement turned out to be the lagging indicator. Stakeholder pressure was already ahead of it.


Sustainability is now a measurable line on the P&L


The "soft cost, hard to justify" framing doesn't hold up against recent figures. BCG's fifth annual climate survey of large companies found 82% had already captured economic benefits from decarbonisation, with 6% reporting gains exceeding 10% of annual revenue, driven by a mix of sustainable-product revenue growth and operational efficiency savings. Nearly half of companies assessing climate adaptation reported returns on that investment exceeding 10%.


This is the part of the conversation that gets lost in CSR-era language: sustainability initiatives, done properly, are efficiency programmes. Energy use, waste, and supply chain resilience are operational line items, and improving them shows up in margins regardless of anyone's environmental convictions.


The workforce argument is real, but it's narrower than people think


It's become a truism that younger employees "care about sustainability." The data supports a more specific claim than the usual one. Deloitte's 2025 Gen Z and Millennial Survey, covering over 23,000 respondents across 44 countries, found 70% consider a company's environmental credentials important when evaluating a potential employer, and around 23% had already researched a company's environmental record before accepting a job. More strikingly, 15% of Gen Z and 13% of millennial respondents said they had already left a job specifically over environmental concerns.


That's not aspiration; that's attrition already happening. For employers competing for talent in a generation that will make up 74% of the global workforce by 2030, this is a retention metric as much as a values statement.


Where this leaves business leaders


None of this means sustainability guarantees outperformance, or that every initiative pays for itself. The data doesn't support that strong a claim, and businesses should be wary of anyone who tells them otherwise.

What it does support is a narrower, more useful conclusion: companies that treat sustainability as a verifiable, integrated part of strategy, with real metrics, not just commitments, are being rewarded by investors, capital markets, regulators, and the talent pool. Companies relying on broad claims without evidence are increasingly being caught out by all four.


The CSR era treated sustainability as a cost centre with reputational upside. The current data suggests something closer to the opposite: it's a performance lever with reputational risk attached if you get the evidence wrong.

That's a different problem to solve, and a more interesting one.


Reference:


Boston Consulting Group. (2025). Six ways to link sustainability and value creation.https://www.bcg.com/publications/2025/six-ways-link-sustainability-value-creation


Boston Consulting Group, & CO2 AI. (2025). Climate survey 2025: How companies are tackling the climate challenge and creating value. https://co2ai.com/climate-survey-2025



Deloitte. (2025). 2025 Gen Z and Millennial Survey. https://www.deloitte.com/ge/en/issues/work/genz-millennial-survey.html


Edelman. (2025). 2025 Edelman Trust Barometer: Trust and the crisis of grievance.https://www.edelman.com/trust/2025/trust-barometer



International Energy Agency. (2025). World Energy Outlook 2025.https://www.iea.org/reports/world-energy-outlook-2025


KPMG. (2024). The move to mandatory reporting: Survey of sustainability reporting 2024.https://kpmg.com/ie/en/insights/esg/the-move-to-mandatory-reporting-esg.html


McKinsey & Company. (2022). The net-zero transition: What it would cost, what it could bring.https://www.mckinsey.com/capabilities/sustainability/our-insights/the-net-zero-transition-what-it-would-cost-what-it-could-bring




PwC. (2025a). From insight to value: The sustainability reporting journey continues.https://www.pwc.com/gx/en/issues/esg/global-sustainability-reporting-survey.html



World Economic Forum. (2025). Global Risks Report 2025. https://www.weforum.org/publications/global-risks-report-2025/


World Economic Forum, & Boston Consulting Group. (2025). Already a multi-trillion-dollar market: CEO guide to growth in the green economy.https://www.weforum.org/publications/already-a-multi-trillion-dollar-market-ceo-guide-to-growth-in-the-green-economy/

 
 
 

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