The global sustainability consulting market surpassed $12 billion in 2025, according to research from MarketsandMarkets, driven largely by mandatory ESG disclosure requirements taking effect across the European Union and increasing voluntary reporting among U.S. corporations responding to investor expectations. For sustainability consulting practices, the opportunity is significant — but so is the workload. ESG reports are research-intensive documents that require careful data gathering, framework alignment (GRI, SASB, TCFD), and precise client communication throughout the engagement.
Virtual assistants are increasingly stepping into supporting roles that allow sustainability consultants to take on more engagements without working longer hours or making premature hires.
Research Assistance for ESG Frameworks
A core function of sustainability consulting is helping clients understand where they stand relative to established frameworks and peer benchmarks. This requires gathering publicly available data — regulatory filings, industry reports, peer company disclosures — and synthesizing it into actionable analysis. The data-gathering phase is time-consuming but does not always require senior-level expertise.
According to Priya Nambiar, founder of a boutique sustainability advisory firm in Boston, she began delegating research tasks to a VA in early 2025 and saw immediate time savings. "I was spending about 12 hours per engagement just pulling peer benchmarks and summarizing framework requirements," Nambiar said. "My VA handles the research compilation. I do the interpretation. We cut engagement prep time in half."
VAs in this role typically conduct web research, pull data from sustainability databases, summarize regulatory developments, and prepare organized research briefs for consultant review.
ESG Report Production and Formatting
ESG reports for corporate clients are substantial documents — often 40 to 80 pages — requiring consistent formatting, data tables, performance charts, and carefully formatted citations. Consultants who produce these reports manually spend significant time on production tasks that a VA can handle efficiently.
Thomas Wren, a senior ESG analyst at a Chicago-based consulting firm, noted that his team began using a VA for report formatting and quality control after recognizing how much billable time was being absorbed by document production. "Our VA formats the entire report shell, populates data tables from the spreadsheets we provide, and runs a completeness checklist before we do final review," Wren said. "It's probably saved us eight hours per report."
Virtual assistants can also manage version control, coordinate client review rounds, and prepare executive summary drafts for consultant refinement.
Client Communication and Engagement Management
Sustainability consulting engagements typically run three to six months, involving regular status calls, data request follow-ups, stakeholder interviews, and draft review cycles. Managing this communication flow — scheduling calls, sending agenda documents, following up on outstanding data requests, and logging meeting notes — is a coordination function that VAs handle well.
A 2025 survey by the Sustainability Accounting Standards Board found that 58 percent of corporate sustainability teams cited "slow response times from consultants" as a pain point in ESG engagements. Virtual assistants can significantly reduce that friction by handling the communication layer between consultants and client project teams.
Regulatory Monitoring and Update Summaries
The ESG regulatory landscape is evolving rapidly. New disclosure requirements from the SEC, EU taxonomy updates, and changes to GRI standards all require sustainability consultants to stay current. VAs can monitor regulatory websites, sustainability news sources, and framework update channels, compiling weekly briefings that keep consultants informed without requiring them to do the monitoring themselves.
Building a Scalable Practice
Sustainability consulting practices that have successfully integrated VA support tend to start with a defined scope — one engagement type, one workflow — and expand from there. The consultants who try to delegate everything at once often encounter friction; those who identify one high-volume task and build a clear process around it see faster results.
For sustainability practices looking for experienced virtual assistant support, Stealth Agents provides VAs trained in research workflows, document production, and professional client communication. Their team can support sustainability consultants at every stage of the engagement lifecycle.
ESG reporting demand is not a short-term trend. Sustainability consulting practices that build efficient operational infrastructure now — including smart VA integration — will be best positioned to capture the market opportunity ahead.
Sources:
- MarketsandMarkets, "Sustainability Consulting Market Forecast Report," 2025
- Sustainability Accounting Standards Board, "Corporate ESG Engagement Survey," 2025