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Sustainability Consulting Market Size, Share and Forecast 2026-2036

The global sustainability consulting market is worth USD 30.2 bn in 2026 and is forecast to reach USD 65.3 bn by 2036, growing at a 8.0% CAGR. United States is the largest country market and ESG reporting and assurance support is the largest by service segment.

USD 30.2 bnMarket size 2026
USD 65.3 bnForecast 2036
8.0%CAGR 2026-2036
United StatesLargest country

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5 segmentation views25 countries2026 to 2036 yearly forecast

Market overview

The global sustainability consulting market is worth USD 30.2 bn in 2026 and is forecast to reach USD 65.3 bn by 2036, growing at a 8.0% CAGR. United States is the largest country market and ESG reporting and assurance support is the largest by service segment.

ScopeAdvisory services that help organisations plan and deliver sustainability: net-zero strategy, ESG reporting and assurance support, climate risk, carbon accounting, supply chain sustainability and circular economy.
IndustryServices and Utilities
Value 2025USD 28.0 bn
Value 2026USD 30.2 bn
Value 2036USD 65.3 bn
CAGR 2026-20368.0%
Volume 2026147 thousand engagements
Volume 2036236 thousand engagements
Average price 2026USD 206,000 per engagement
Report priceStarts from USD 1,999
PublishedNovember 2026

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Sustainability Consulting market size and forecast, 2026-2036

Exhibit 1The global sustainability consulting market is forecast to grow from USD 30.2 bn in 2026 to USD 65.3 bn by 2036, more than doublingGlobal market value in USD: 2025 base year, 2026 estimate and forecast to 2036. CAGR 2026 to 2036: 8.0%
Sustainability Consulting market value, 2025 to 2036Market value by year. 2025: USD 28.0 bn; 2026: USD 30.2 bn; 2027: USD 32.7 bn; 2028: USD 35.3 bn; 2029: USD 38.1 bn; 2030: USD 41.1 bn; 2031: USD 44.4 bn; 2032: USD 48.0 bn; 2033: USD 51.8 bn; 2034: USD 56.0 bn; 2035: USD 60.4 bn; 2036: USD 65.3 bn. Compound annual growth rate 2026 to 2036: 8.0%.202530.2 bn202644.4 bn203165.3 bn20368.0% CAGR

Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.

YearMarket value
2026USD 30.2 bn
2027USD 32.7 bn
2028USD 35.3 bn
2029USD 38.1 bn
2030USD 41.1 bn
2031USD 44.4 bn
2032USD 48.0 bn
2033USD 51.8 bn
2034USD 56.0 bn
2035USD 60.4 bn
2036USD 65.3 bn

Sustainability Consulting market segmentation

By service

Exhibit 2ESG reporting and assurance support is the largest segment by service, with 26.0% of 2026 revenueEstimated share of 2026 global revenue, by service
Sustainability Consulting market share by service, 2026Share of 2026 revenue by service. ESG reporting and assurance support: 26.0%; Strategy and net-zero planning: 24.0%; Climate risk and carbon accounting: 18.0%; Energy and efficiency advisory: 14.0%; Supply chain sustainability: 12.0%; Circular economy: 6.0%.ESG reporting and assurance support26.0%Strategy and net-zero planning24.0%Climate risk and carbon accounting18.0%Energy and efficiency advisory14.0%Supply chain sustainability12.0%Circular economy6.0%

Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.

SegmentShare 2026Share 2036Value 2026CAGR 2026-36
Strategy and net-zero planning24.0%23.4%USD 7.3 bn7.7%
ESG reporting and assurance support26.0%23.1%USD 7.9 bn6.7%
Climate risk and carbon accounting18.0%21.1%USD 5.4 bn9.7%
Supply chain sustainability12.0%12.8%USD 3.6 bn8.7%
Energy and efficiency advisory14.0%12.5%USD 4.2 bn6.7%
Circular economy6.0%7.0%USD 1.8 bn9.7%

By client industry

Exhibit 3Manufacturing and industrials adds the most revenue by client industry, growing from USD 9.1 bn in 2026 to USD 18.6 bn by 2036Estimated revenue in USD by client industry, 2026 and 2036 forecast
Sustainability Consulting market by client industry, 2026 and 2036Revenue by client industry in 2026 and 2036. Manufacturing and industrials: USD 9.1 bn in 2026, USD 18.6 bn in 2036, change +105%; Financial services: USD 6.7 bn in 2026, USD 15.7 bn in 2036, change +135%; Energy and utilities: USD 4.8 bn in 2026, USD 9.9 bn in 2036, change +105%; Consumer and retail: USD 3.6 bn in 2026, USD 8.2 bn in 2036, change +125%; Public sector: USD 3.6 bn in 2026, USD 7.8 bn in 2036, change +115%; Other: USD 2.4 bn in 2026, USD 5.2 bn in 2036, change +115%.20262036 forecastChangeManufacturing and industrials+105%9.1 bn18.6 bnFinancial services+135%6.7 bn15.7 bnEnergy and utilities+105%4.8 bn9.9 bnConsumer and retail+125%3.6 bn8.2 bnPublic sector+115%3.6 bn7.8 bnOther+115%2.4 bn5.2 bn

Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.

SegmentShare 2026Share 2036Value 2026CAGR 2026-36
Manufacturing and industrials30.0%28.5%USD 9.1 bn7.4%
Financial services22.0%24.0%USD 6.7 bn8.9%
Energy and utilities16.0%15.2%USD 4.8 bn7.4%
Public sector12.0%11.9%USD 3.6 bn7.9%
Consumer and retail12.0%12.5%USD 3.6 bn8.4%
Other8.0%8.0%USD 2.4 bn7.9%

By engagement type

SegmentShare 2026Share 2036Value 2026CAGR 2026-36
Advisory and strategy42.0%38.0%USD 12.7 bn6.9%
Implementation support30.0%31.0%USD 9.1 bn8.3%
Assurance and verification28.0%31.0%USD 8.5 bn9.1%

By firm type

SegmentShare 2026Share 2036Value 2026CAGR 2026-36
Big Four and large consultancies44.0%39.0%USD 13.3 bn6.7%
Specialist sustainability firms30.0%34.0%USD 9.1 bn9.4%
Engineering and technical firms26.0%27.0%USD 7.9 bn8.4%

By client size

SegmentShare 2026Share 2036Value 2026CAGR 2026-36
Large enterprises62.0%57.0%USD 18.7 bn7.1%
Mid-sized firms26.0%29.0%USD 7.9 bn9.2%
Small firms12.0%14.0%USD 3.6 bn9.7%

Top 25 countries for sustainability consulting by revenue

Countries are ranked by revenue earned from sales in the country, not by where the product is made. The ten largest hold 74.5% of 2026 revenue and the 25 countries below together hold 93.4%.

Exhibit 4United States is the largest country market at USD 8.5 bn in 2026, and the three largest countries hold 45.0% of global revenueEstimated 2026 revenue in USD and share of the global market, ten largest countries
Sustainability Consulting market, ten largest countries in 2026Ten largest countries by 2026 revenue. United States: USD 8.5 bn, 28.0%; United Kingdom: USD 2.7 bn, 9.0%; Germany: USD 2.4 bn, 8.0%; France: USD 1.8 bn, 6.0%; China: USD 1.8 bn, 6.0%; Japan: USD 1.2 bn, 4.0%; Netherlands: USD 1.1 bn, 3.5%; Canada: USD 1.1 bn, 3.5%; Australia: USD 1.1 bn, 3.5%; India: USD 907 mn, 3.0%.United States8.5 bn 28.0%United Kingdom2.7 bn 9.0%Germany2.4 bn 8.0%France1.8 bn 6.0%China1.8 bn 6.0%Japan1.2 bn 4.0%Netherlands1.1 bn 3.5%Canada1.1 bn 3.5%Australia1.1 bn 3.5%India907 mn 3.0%

Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.

#CountryValue 2026Share 2026Value 2036CAGR 2026-36
1United StatesUSD 8.5 bn28.0%USD 16.1 bn6.6%
2United KingdomUSD 2.7 bn9.0%USD 5.7 bn7.6%
3GermanyUSD 2.4 bn8.0%USD 5.3 bn8.1%
4FranceUSD 1.8 bn6.0%USD 4.0 bn8.2%
5ChinaUSD 1.8 bn6.0%USD 5.2 bn11.2%
6JapanUSD 1.2 bn4.0%USD 2.6 bn8.0%
7NetherlandsUSD 1.1 bn3.5%USD 2.3 bn8.0%
8CanadaUSD 1.1 bn3.5%USD 2.3 bn8.0%
9AustraliaUSD 1.1 bn3.5%USD 2.3 bn8.0%
10IndiaUSD 907 mn3.0%USD 2.9 bn12.2%
11ItalyUSD 871 mn2.9%USD 1.9 bn8.0%
12SpainUSD 668 mn2.2%USD 1.4 bn8.0%
13SwedenUSD 535 mn1.8%USD 1.2 bn8.0%
14SwitzerlandUSD 457 mn1.5%USD 986 mn8.0%
15DenmarkUSD 402 mn1.3%USD 868 mn8.0%
16NorwayUSD 366 mn1.2%USD 790 mn8.0%
17BelgiumUSD 336 mn1.1%USD 725 mn8.0%
18SingaporeUSD 311 mn1.0%USD 672 mn8.0%
19South KoreaUSD 290 mn1.0%USD 627 mn8.0%
20BrazilUSD 275 mn0.9%USD 653 mn9.0%
21FinlandUSD 260 mn0.9%USD 561 mn8.0%
22IrelandUSD 248 mn0.8%USD 535 mn8.0%
23United Arab EmiratesUSD 239 mn0.8%USD 568 mn9.1%
24South AfricaUSD 230 mn0.8%USD 496 mn8.0%
25AustriaUSD 221 mn0.7%USD 477 mn8.0%
Rest of worldUSD 2.0 bn6.6%USD 4.3 bn7.9%
Exhibit 5United States and China account for 31% of the USD 35.0 bn the market is forecast to add by 2036Forecast revenue added between 2026 and 2036 by country, in USD
Sustainability Consulting market, where the growth to 2036 comes fromRevenue added between 2026 and 2036. Market value 2026: USD 30.2 bn. United States: +USD 7.6 bn; China: +USD 3.4 bn; United Kingdom: +USD 3.0 bn; Germany: +USD 2.9 bn; France: +USD 2.2 bn; 20 other countries: +USD 13.8 bn; Rest of world: +USD 2.3 bn. Market value 2036: USD 65.3 bn.Market value 202630.2 bnUnited States+7.6 bnChina+3.4 bnUnited Kingdom+3.0 bnGermany+2.9 bnFrance+2.2 bn20 other countries+13.8 bnRest of world+2.3 bnMarket value 203665.3 bn

Source: Compare Market Research analysis.
© 2026 Compare Market Research. All rights reserved.

Competitive landscape

Group 1: Global leaders

  • Deloitte
  • PwC
  • EY
  • KPMG
  • McKinsey & Company
  • Accenture
  • Boston Consulting Group
  • Bain & Company

Group 2: Regional and specialist players

  • ERM
  • WSP
  • Arcadis
  • Ramboll
  • South Pole
  • AECOM
  • Arup
  • Bureau Veritas
  • DNV
  • SGS

Group 3: Emerging and niche players

  • Anthesis
  • Carbon Trust
  • Normative
  • Quantis
  • Sphera
  • Greenly
  • Watershed
  • Sweep

Research methodology

Every figure on this page comes from the research framework that we apply to all of the markets we cover. The 2025 base for the sustainability consulting market is built from the volume sold and the price that buyers pay, and is cross-checked against the size of the wider industry the market belongs to. Where a market can be sized in more than one way, the routes are compared before a figure is set.

The forecast runs year by year from the 2025 base to 2036. Growth in each year reflects demand from the industries that buy the product, adoption of new technology, pricing, regulation and replacement cycles. Volume and price are modelled together, so revenue in each year equals volume multiplied by average price. The 2026 to 2036 compound annual growth rate of 8.0% is calculated from the resulting values.

The market is divided by service, by client industry, by engagement type, by firm type, by client size. The 25 largest countries are ranked by revenue earned from sales to buyers in each country, not by where the product is made. Segment values and country values add up to the market total in every year, and every report is checked for consistency before it is published.

Companies are placed in three groups: global leaders, regional and specialist players, and emerging and niche players. The groups describe how companies compete in the market. They are not a ranking and they are not market shares.

Our analysts also carry out primary research. Customized reports add interviews with key opinion leaders, such as senior executives, technical specialists and buyers, to test the assumptions behind the numbers for the question being asked.

Read the full research methodology

Frequently asked questions

How big is the sustainability consulting market?

The global sustainability consulting market is estimated at USD 28.0 bn in 2025 and USD 30.2 bn in 2026.

How fast will the sustainability consulting market grow?

It is forecast to reach USD 65.3 bn by 2036, a compound annual growth rate of 8.0% from 2026, an increase of USD 35.0 bn.

Which country is the largest market for sustainability consulting?

United States is the largest market by revenue at USD 8.5 bn in 2026, 28.0% of the global total. The three largest countries together hold 45.0%.

Which country is growing fastest?

Among the ten largest markets, India is growing fastest at 12.2% a year from 2026 to 2036.

Which sustainability consulting segment is largest?

In the by service split, ESG reporting and assurance support is the largest segment with 26.0% of 2026 revenue.

Who are the leading sustainability consulting companies?

Global leaders include Deloitte, PwC, EY, KPMG.

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