The solar energy storage market was estimated at USD 86. 2 billion by 2035, at a CAGR of 17. 4%, according to a recent study by Global Market Insights Inc. Positive outlook toward clean energy. Favorable. One thing is certain, battery energy storage systems – from residential to commercial & industrial (C&I) to utility-scale – are the absolute short cut to delivering the flexible, electrified energy system that is foundational to EU energy security and competitiveness goals. The market, currently estimated at $50 billion in 2025, is projected to achieve a. f energy storage systems in the clean energy transition. Strong federal policies like the solar Investment Tax Credit (ITC), rapidly declining.