Connecticut's clean energy industry continued its strong growth in 2024, reaching record employment levels and reinforcing its role as a key driver of economic growth and job creation across the state, according to the newly released 2025 Connecticut Clean Energy Industry Report.
The report finds that clean energy employment grew 2.8 percent from 2023 to 2024, adding more than 1,200 jobs and bringing total clean energy employment to nearly 47,300 workers statewide. Clean energy job growth was four times faster than overall statewide employment growth, accounting for more than 10 percent of all net job growth in Connecticut over that period.
"Connecticut's clean energy economy continues to deliver real results for workers, businesses, and communities across the state," said Brenda Watson, Chair of the Joint Committee of the Energy Efficiency Board and Connecticut Green Bank. "These findings confirm that investments in clean energy are also investments in economic growth, competitiveness, and good-paying jobs."
Clean Energy Delivers $7 Billion to Connecticut's Economy
Beyond job growth, the clean energy sector generated approximately $7.0 billion in Gross Regional Product (GRP) in 2024, representing 2.4 percent of Connecticut's total economic output. Manufacturing, construction, and professional services drove much of this impact, underscoring the sector's expanding role across the state's supply chains.
Construction activity within clean energy became significantly more productive in 2024, with the sector's economic output increasing nearly 9 percent year over year, even as employment levels held steady, which suggests a shift toward higher-value, more capital-intensive projects, or more efficient clean energy construction projects.
Energy Efficiency Leads, While Emerging Sectors Accelerate
Energy efficiency remained the backbone of Connecticut's clean energy workforce, supporting more than 36,000 jobs, or nearly 77 percent of all clean energy employment. Job growth was particularly strong in high-efficiency HVAC, renewable heating and cooling, and advanced building materials.
At the same time, emerging sectors showed rapid acceleration:
- Clean Grid and Energy Storage recorded the fastest growth rate of any clean energy sector, expanding 6.6 percent year over year and surpassing a milestone of 1,000 workers statewide. This growth was led primarily by Clean Storage.
- Clean energy manufacturing employment grew more than 8 percent, reflecting growing in-state supply-chain activity.
- Wholesale trade jobs tied to clean energy rose nearly 12 percent, pointing to a robust project pipeline and continued investment momentum.
Clean Energy Growth Reaches Every Corner of the State
Clean energy employment grew across all regions of Connecticut in 2024. New London County posted the fastest growth rate, while Fairfield County added the largest number of new clean energy jobs. Hartford, Fairfield, and New Haven counties together accounted for more than three-quarters of the state's clean energy workforce, demonstrating the industry's broad geographic footprint.
Policy Leadership Supporting Jobs and Competitiveness
The report highlights how Connecticut's clean energy and climate policies continue to support workforce demand, infrastructure investment, and long-term economic competitiveness. Recent actions focused on energy efficiency, grid modernization, energy storage, and clean transportation are helping position Connecticut as a regional leader in the clean energy economy.
The 2025 Connecticut Clean Energy Industry Report was commissioned by the Connecticut General Assembly's Joint Committee and produced by BW Research Partnership, with support from the Connecticut Green Bank, Eversource, and United Illuminating. Employment data are drawn from the U.S. Department of Energy's U.S. Energy and Employment Report.
To view the full report, visit www.ctgreenbank.com/strategy-impact/societal-impact/.
