Environment Analyst’s US Environmental & Sustainability Consulting Market Assessment reveals the market surged to $22.3bn in 2023, but as US politics and its economy face seismic changes, growth is expected to slow markedly. While the market is forecast to increase 16% in 2024, fuelled by IRA and IIJA momentum, longer-term projections are tempered. The Top 27 US firms accounted for 75% of the total US market, and Tetra Tech, AECOM, WSP, Stantec and TRC Companies made up 43% of the market.