Massachusetts Clean Energy Guide

Massachusetts is a national leader in offshore wind development and clean energy policy. With ambitious net-zero targets and the first utility-scale offshore wind farm in the US, the state is pioneering the East Coast clean energy transition.

2,018 MW
Clean Energy Capacity
21%
Clean Electricity Share
$4.6B
Capital Invested
59,900
Clean Energy Jobs

Source: American Clean Power Association

Last updated: January 30, 2026

Grid Operator: ISO-NE

Massachusetts operates within ISO New England (ISO-NE), the regional grid operator managing wholesale electricity markets and transmission across the six New England states.

Learn more about ISO-NE

Offshore Wind Leadership

Massachusetts has positioned itself as the hub of US offshore wind development. The state's long coastline and strong, consistent winds make it ideal for offshore wind generation. Vineyard Wind 1, located 15 miles south of Martha's Vineyard, became the nation's first utility-scale offshore wind project when it began operations in 2024.

Major Offshore Wind Projects

  • Vineyard Wind 1: 806 MW, first US utility-scale offshore wind farm, operational 2024
  • Commonwealth Wind: 1,200+ MW project in development south of Martha's Vineyard
  • Mayflower Wind: 1,200 MW project in federal lease areas
  • SouthCoast Wind: 2,400 MW total capacity in development phases

Supply Chain Development

Massachusetts is developing offshore wind manufacturing and assembly facilities. New Bedford Marine Commerce Terminal serves as a staging area for offshore wind components, while the state attracts blade manufacturing, foundations, and operations facilities to support the growing industry.

Solar Development

Despite its northern latitude, Massachusetts has built substantial solar capacity through aggressive incentive programs. The SMART (Solar Massachusetts Renewable Target) program provides declining block incentives that have driven deployment across residential, commercial, and utility-scale segments.

SMART Program

The SMART program replaces the earlier SREC program with more predictable, long-term incentive payments. Projects receive 10-20 year incentive contracts based on capacity blocks, with adders for storage, low-income participation, and brownfield development. The program has successfully driven deployment while reducing costs over time.

Climate Policy Framework

Massachusetts has one of the most comprehensive climate policy frameworks in the nation. The 2021 Climate Law established legally binding emissions reduction requirements: 50% below 1990 levels by 2030, 75% by 2040, and net-zero by 2050. The state's Clean Energy and Climate Plan details sector-by-sector strategies to achieve these goals.

Building Decarbonization

Massachusetts is pioneering building electrification policies. The state offers incentives for heat pump adoption, has updated building codes to encourage all-electric construction, and allows municipalities to adopt stretch codes and fossil fuel restrictions for new construction.

Key Developers Active in Massachusetts

  • Vineyard Wind (Avangrid/Copenhagen Infrastructure Partners): Leading offshore wind developer
  • Mayflower Wind (Shell/Ocean Winds): Major offshore wind project developer
  • Eversource: Major utility with clean energy investments
  • National Grid: Utility supporting renewable integration
  • BlueWave Solar: Leading community solar developer
  • Borrego: Commercial and community solar developer

Challenges & Outlook

Massachusetts faces challenges including high electricity costs, limited land for utility-scale solar, and transmission constraints for offshore wind integration. The offshore wind industry has faced cost pressures and project delays due to supply chain issues and rising interest rates.

However, the state's strong policy framework, established offshore wind industry, and commitment to climate goals position it well for continued clean energy leadership. Success in offshore wind will be particularly critical for meeting the state's ambitious emissions targets.

Frequently Asked Questions

What are Massachusetts' clean energy goals?

Massachusetts has committed to achieving net-zero greenhouse gas emissions by 2050, with an interim target of 50% reduction by 2030 and 75% by 2040. The state's Clean Energy and Climate Plan outlines pathways including offshore wind, solar, and building electrification.

How is offshore wind developing in Massachusetts?

Massachusetts is a national leader in offshore wind development with multiple projects in development off the coast. Vineyard Wind 1, the first utility-scale offshore wind farm in the US, began operations in 2024. The state has procurement targets exceeding 5,600 MW of offshore wind.

What solar incentives are available in Massachusetts?

Massachusetts offers the SMART (Solar Massachusetts Renewable Target) program providing declining block incentives for solar installations, net metering for systems under 25 kW, and various tax incentives. The state also has a robust community solar program.

How does ISO-NE affect Massachusetts energy markets?

Massachusetts operates within ISO-NE (ISO New England), the regional grid operator serving six New England states. ISO-NE manages wholesale electricity markets and coordinates renewable energy integration across the region.

Related State Guides (ISO-NE Region)