Massachusetts has passed a bold energy storage mandate. It requires investor-owned utilities to secure 5,000 megawatts (MW) of storage by 2030. This includes 3,500 MW of mid-duration, 750 MW of long-duration, and another 750 MW for multi-day storage. The goal is to modernize the grid and integrate renewable energy fully.
The state’s Department of Energy Resources (DOER) and electric distribution companies (EDCs) have released a draft request for proposals (RFP), expressing interest to buy 1,500 MW of mid-duration battery energy storage systems (BESS).
By locking in contracts early, the state wants a resilient energy system to handle solar and wind power fluctuations. Since renewables generate power intermittently, storage systems are vital for grid stability. The new law urges utilities to secure agreements quickly and cuts red tape by streamlining permitting and siting processes.
How Energy Storage Will Maximize Renewable Energy in Massachusetts
This mandate aims to boost renewable energy use and reduce curtailment, which is wasted clean power. By investing in storage, the state can save renewable electricity produced during sunny or windy periods. It can then use that power when needed.
Data shows that states with clear storage mandates adopt renewables 25% faster than those without. With this law, Massachusetts joins leaders like California and New York in boosting clean energy adoption.
The streamlined approval process also helps speed up clean energy project construction. Stakeholders see this as a game-changing step toward increasing renewable use while maintaining grid reliability.
Environmental Benefits of Energy Storage
This law supports the U.S. goal to cut greenhouse gas emissions by 50% by 2030. Long-duration and multi-day storage systems prevent waste of renewable energy when generation is low. Instead of relying on fossil fuels, utilities can use stored clean energy.
Storage cuts the need for “Peaker plants” that emit high carbon during peak demand. This rule, along with other clean energy investments, boosts the state’s climate action efforts.
The National Renewable Energy Laboratory (NREL) states that effective energy storage can reduce system costs. And this can be possible by improving the use of renewable energy. These solutions can also cut down land use and water needs, making clean energy more environmentally friendly.
Growth Opportunities for Battery and Long-Duration Technologies
This mandate sends a strong message to developers and investors. With a clear goal of 5,000 MW by 2030 and a solid procurement plan, Massachusetts stands out as a prime market for energy storage technologies like lithium-ion, flow batteries, iron-air systems, and thermal storage.
Experts predict U.S. storage capacity will triple by 2030. Massachusetts provides the policy certainty that attracts investment and encourages competition among developers. The state’s mixed approach to mid- and long-duration goals reflects a savvy understanding of energy demand and supply trends.
By combining firm storage targets with faster permitting, Massachusetts sets the stage for rapid deployment—a model for other states.



Challenges Facing Massachusetts Energy Storage Deployment
Challenges like technology readiness, interconnection delays, and permitting risks might slow progress. While the law cuts some bureaucratic barriers, stakeholders must balance speed with oversight.
Cost is another concern. Storage technology costs are higher than some traditional grid solutions. However, NREL expects prices to drop by 2030, especially for long-duration systems. Achieving this goal relies on innovation, market growth, and good investment conditions.



The law boosts Massachusetts’ role in the national clean energy shift. It also urges utilities to act quickly and effectively.



What Do Consumers and the Economy Gain?
Energy storage can lower electricity bills. It does this by stabilizing prices during peak demand. The law also brings economic benefits. It creates jobs in clean tech. This includes roles in manufacturing, engineering, installation, and maintenance as new projects start.
Massachusetts combines clean energy, grid reliability, and economic growth for lasting success. If done right, this policy can guide other states in modernizing their energy systems sustainably and cost-effectively.