Battery Storage Moves From Pilot to Procurement, Driven by Policy and New Chemistries

Transfer Pathway: From Pilot to Procurement

Battery Energy Storage Systems (BESS) are transitioning from niche applications to integral components of grid infrastructure, a shift evidenced by large-scale procurement actions. In late 2025, Massachusetts awarded 1.3 GW of contracts in its first major energy storage tender, signaling a move towards state-mandated grid stabilization. This policy-driven approach creates a structured market for BESS deployment. Concurrently, the commercial sector is demonstrating confidence in emerging battery chemistries. Jupiter Power's agreement with Peak Energy for up to 4.75 GWh of sodium-ion batteries for projects in Texas and California underscores a move to diversify beyond lithium-ion, driven by supply chain and cost considerations. These procurement activities are underpinned by an evolving, though complex, regulatory framework, with standards from organizations like UL (e.g., UL 9540) providing critical safety and compliance pathways for large-scale projects.^[1][2][3]

Operational Realities and System Complexity

Despite procurement momentum, the operational deployment of grid-scale BESS remains a complex technical challenge. Integrating these systems effectively requires sophisticated management to optimize charging and discharging cycles for maximum techno-economic and environmental benefit. The use of AI-driven optimization is becoming a key area of research and development to manage these assets effectively. Furthermore, safety remains a primary concern, with federal agencies like the EPA outlining key considerations for managing risks such as thermal runaway. The development and enforcement of comprehensive codes and standards are critical for ensuring safe and reliable operation as the scale and number of installations grow. These operational hurdles indicate that while the procurement pathway is clearing, the technical and safety integration pathways require ongoing diligence.^[4][5][6]

Skeptical lens / counterpoint

Despite high-profile contracts, the BESS market remains a small fraction of the overall energy grid, and its growth is constrained by factors beyond technology. The long-term performance, reliability, and degradation characteristics of new chemistries like sodium-ion are unproven at grid scale. Furthermore, supply chains for all battery types face potential bottlenecks, and the overall market's growth projections may not fully account for the complexities of interconnection queues and regulatory approval processes that can delay or cancel projects.^[8][9]

What changed recently

In late 2025, the grid-scale energy storage sector saw two significant procurement milestones that signal a shift from pilot projects to scaled deployment. In December, Massachusetts awarded contracts for 1.3 GW of new energy storage, marking one of the first large-scale, state-led competitive tenders for BESS capacity. Just prior, in November, Jupiter Power signed a multi-year agreement with Peak Energy to procure up to 4.75 GWh of sodium-ion batteries, one of the largest non-lithium-ion BESS deals publicly announced. These events represent concrete commercial and policy commitments that are beginning to define the next phase of grid infrastructure.

What to watch next

• The results of subsequent state-level energy storage tenders, particularly in states with high renewable penetration, to see if the procurement model established by Massachusetts is replicated.
• Initial performance and degradation data from the first wave of large-scale sodium-ion BESS deployments, such as the Jupiter Power projects, to validate their long-term viability against lithium-ion.
• Updates to key safety and performance standards, such as UL 9540 and NFPA 855, as these will dictate the engineering and cost requirements for future projects.
• The development of a domestic supply chain for alternative battery chemistries like sodium-ion, which would be a key indicator of reduced reliance on traditional lithium-ion supply lines.