C&I Battery Storage Market Reaches $21B on Peak Shaving Demand
- C&I Storage Energy Storage News
Marin Holt
- 0
- 5 minutes read
- C&I BESS market projected to reach $21 billion by 2036 at 17.4% CAGR
- Battery pack prices fell to $70/kWh in 2025; LCOS projected below $100/MWh by 2026
- Tariffs have increased battery storage costs 56-69% since January 2025
- Peak shaving plus load shifting can reduce total electricity costs by up to 40%
- 93 GW of new BESS installations expected over the next five years globally
The global commercial and industrial battery energy storage market is projected to reach $21 billion by 2036, growing at a 17.4% compound annual rate as manufacturers deploy systems to cut demand charges that represent up to 40% of monthly electricity bills. IDTechEx forecasts approximately 5x market growth between 2026 and 2036, with 93 GW of new installations expected over the next five years. However, tariff-driven cost increases of 56-69% on battery components since January 2025 are complicating near-term project economics.
Technical Details
Peak shaving with battery storage targets the 15-minute demand intervals that set a facility’s peak demand charge for the entire billing cycle. A BESS monitors real-time consumption and discharges instantly when load approaches a preset threshold, presenting a flat profile to the utility meter. Battery pack prices for stationary storage fell to $70/kWh in 2025, and the levelized cost of storage is projected to drop below $100/MWh by 2026, down from $150/MWh in 2020. Combined peak shaving and load shifting — charging during off-peak hours and discharging during peak rate periods — reduce total electricity costs by up to 40%.
Lithium iron phosphate (LFP) chemistry dominates the C&I segment, but sodium-ion batteries are emerging as a viable alternative at 30-40% lower cost. The Inflation Reduction Act’s standalone investment tax credit for energy storage and accelerated depreciation provisions reduce net system costs by up to 30%. Energy-as-a-Service models now allow facilities to install multi-MWh systems with zero upfront capital, paying monthly from electricity bill savings.
Critical Perspective
A 17.4% CAGR projection to $21 billion by 2036 assumes demand charges remain structurally intact for a decade. Demand charges as a share of commercial utility bills have been declining in seven of the ten largest U.S. markets since 2022 as regulators shift to time-of-use pricing — which systematically erodes the core ROI case for peak-shaving storage. The 93 GW of new installations projected over ten years requires 5x market growth from a base that delivered roughly 19 GW of C&I BESS globally in 2025 — a rate the comparable residential storage market never sustained even during peak ITC incentive periods. The question is whether tariff headwinds on LFP cells represent a two-to-three-year disruption or a structural reshaping of installed-cost curves that undermines the CAGR assumption for the entire forecast period.
Why It Matters
New FEOC regulations taking effect in 2026 are driving interest in non-lithium, domestically sourced battery chemistries, while tariff exposure adds 56-69% to imported battery component costs. Despite these headwinds, the value-stacking opportunity — combining demand charge reduction, time-of-use arbitrage, and grid services revenue — continues to strengthen as utilities widen the gap between peak and off-peak rate structures. For industrial facilities with demand charges exceeding $15/kW, payback periods of 3-5 years remain achievable even at elevated component costs.
