The energy storage sector has just hit a monumental milestone, and it’s one that should make us all pause and reflect on the pace of innovation in this space. BloombergNEF’s recent report confirms that we’ve officially entered the 100 GW era, with a staggering 112 GW of energy storage installed in 2025 alone. Personally, I think this isn’t just a number—it’s a testament to how rapidly the world is pivoting toward a more sustainable energy future. What makes this particularly fascinating is the sheer speed at which this has happened. Isshu Kikuma, a senior associate at BloombergNEF, pointed out that it took energy storage just four years to jump from 10 GW to over 100 GW in annual additions. Compare that to solar and wind, which took 8 and 15 years, respectively, to reach similar milestones. This isn’t just growth; it’s a sprint.
The China Factor: Dominance and Its Implications
China’s role in this story cannot be overstated. In 2025, it accounted for a whopping 54% of new energy storage installations globally. From my perspective, this dominance raises both opportunities and challenges. On one hand, China’s manufacturing prowess has driven down costs and scaled up production, making energy storage more accessible worldwide. On the other hand, it creates a single point of vulnerability in the global supply chain. What many people don’t realize is that this concentration of power could have geopolitical ramifications, especially in times of global instability, like the ongoing Iran war. While Kikuma notes that the war’s direct impact on energy storage has been limited so far, the indirect effects—such as rising shipping and manufacturing costs—could reshape the industry in unexpected ways.
Lithium-Ion’s Reign and the Rise of Alternatives
Lithium-ion batteries, particularly those using lithium iron phosphate (LFP) chemistry, currently dominate the market, accounting for 90% of annual additions. But here’s where it gets interesting: BloombergNEF predicts a shift toward long-duration energy storage, with annual additions expected to quadruple to 2 GW. This isn’t just a technical detail—it’s a game-changer. Long-duration storage could solve one of the biggest challenges in renewable energy: intermittency. If you take a step back and think about it, this could be the key to making solar and wind truly reliable on a global scale.
Another detail that I find especially interesting is the emergence of sodium-ion batteries. While still in its infancy, this technology is gaining traction, with major deals like CATL’s 60 GWh supply agreement with HyperStrong. What this really suggests is that the energy storage landscape is far from static. As lithium prices fluctuate and supply chains face pressure, sodium-ion could become a viable—and cheaper—alternative. This raises a deeper question: Are we on the cusp of a battery chemistry revolution?
The Narrowing Gap Between Solar and Storage
One of the most striking trends in the report is the narrowing gap between solar capacity and energy storage additions. In 2016, the ratio was 56:1; by 2025, it had plummeted to 6:1, and it’s expected to hit 4:1 in 2026. This isn’t just a statistical curiosity—it’s a sign of how intertwined these two sectors have become. What makes this particularly fascinating is that it reflects a broader shift in how we think about energy infrastructure. Storage is no longer an afterthought; it’s a critical component of any renewable energy project. From my perspective, this convergence could accelerate the transition to a fully decarbonized grid faster than anyone anticipated.
The Broader Implications: A World Powered by Storage
If current trends hold, BloombergNEF predicts that cumulative energy storage capacity could reach 2,867 GW by 2036—a tenfold increase from 2025 levels. That’s not just impressive; it’s transformative. Imagine a world where energy storage is so ubiquitous that blackouts become a rarity, and fossil fuels are relegated to the history books. But here’s the catch: achieving this vision will require more than just technological advancements. It will demand smarter policies, greater investment, and a willingness to rethink how we build and manage energy systems.
In my opinion, the 100 GW milestone isn’t just a victory for the energy storage sector—it’s a wake-up call for the entire world. It shows us what’s possible when innovation, ambition, and necessity align. But it also reminds us that the hard work is just beginning. The next decade will be decisive, and how we navigate it will determine whether this momentum translates into a sustainable future or just another missed opportunity.
What this really suggests is that energy storage isn’t just a technology—it’s a catalyst for change. And as someone who’s been following this space for years, I can’t help but feel a mix of excitement and urgency. The future is being built right now, and energy storage is at the heart of it.
