The global supply chain is responsible for about 90% of the environmental impact of business activities. Collecting and reporting data on the environmental aspects of ESG from suppliers is therefore crucial for achieving meaningful reductions in greenhouse gas emissions and energy consumption. But small and medium-sized enterprises — which make up the majority of suppliers — face significant challenges meeting the growing demand for ESG data from their customers, regulators, and investors. The social and governance aspects matter just as much for the supply chain, but many SMEs lack formal policies or programmes to address them at all.
One of the main challenges for SMEs is the complexity, accuracy, and verification of ESG data reporting. There are many different standards, frameworks, and methodologies for measuring and disclosing ESG performance, which vary by sector, region, and stakeholder — there still isn't a global consensus on how to calculate net zero emissions, despite it being a common goal for companies and countries alike. On top of that, ESG data reporting is costly and time-consuming for SMEs, most of which don't have dedicated sustainability teams or resources to draw on.
ESG reporting can provide SMEs with a real competitive advantage — attracting customers, investors, and talent who value sustainability, and helping manage risk more effectively. But only once the basic data problem is solved.
To overcome the barriers of ESG reporting, SMEs can leverage technology solutions that make collecting, analysing, and reporting ESG data easier and more affordable — low-cost IoT sensors that monitor energy use and emissions in real time, or software platforms purpose-built to help SMEs comply with ESG reporting standards and frameworks. SMEs can also benefit enormously from the support and guidance of larger customers or partners with more ESG experience — Walmart and Apple, for instance, have both built online tools and resources specifically to help their SME suppliers understand and comply with ESG requirements.
The following two cases are hypothetical composites, built from patterns seen repeatedly across real SME suppliers, rather than named clients — but they capture exactly how this plays out in practice.
A small industrial supplier — call it Acme Corporation, roughly 50 employees, a single factory, supplying automotive, aerospace, and construction customers — struggled because each customer had different requirements for GHG emissions reporting, and Acme had no reliable way to calculate its own emissions beyond manual estimation and generic emission factors that didn't reflect its actual operations. The fix was a modest technology investment: real-time energy and emissions monitoring on its equipment, feeding a cloud platform that could generate a customised report per customer standard. The result was faster reporting, more accurate data, and — critically — the ability to actually identify where energy use could be reduced, rather than just documenting it after the fact.
A mid-sized online retailer — call it Beta Retail, around 200 employees, sourcing from suppliers across Asia, Europe, and Latin America — faced the opposite problem: no formal social or governance policies at all, under increasing pressure from customers and regulators to prove ethical sourcing. The fix came from one of its largest customers' own supplier programme: a Supplier Code of Conduct setting clear expectations, a Supplier Responsibility Standard defining how to measure and report performance, a portal for submitting data, and training resources. Beta Retail didn't have to build ESG capability from scratch — it borrowed a framework that already existed and adapted it.
GreenBiz Group, a US media and events company, tackled the challenge of communicating ESG value to a wide range of stakeholders by building a "360° Value Reporting Experience" that shows how it creates and measures value across both sustainability and financial performance. Socialsuite, an Australian ESG software company, built a cloud platform specifically to help SMEs and mid-sized companies commence ESG reporting simply and affordably, with reports customisable to each client's needs. Ecopetrol, the Colombian state-owned oil and gas company, took the harder but more durable route: a genuine data governance model with cross-functional teams, internal and external audits, continuous improvement, and ESG performance linked directly to executive compensation — the kind of structural commitment that actually survives scrutiny.
ESG reporting is becoming more important — and more challenging — for SMEs in the supply chain every year. But it doesn't have to be solved alone. Between affordable technology, the support of larger customers who've already built the frameworks, and a willingness to borrow what already works rather than reinventing it, SMEs can meet the expectations of their stakeholders while creating real value for themselves in the process.