China's Use of Renewable + Batteries for AI
A number of days ago I posted that I had exited my Bloom Energy (BE) position due to the fact that I felt that their future was limited. I based my hypothesis on recent developments in China which eliminated the need for fuel based on-site energy generation.
My observations were based on a YouTube video. Admittedly, YouTube videos are not always the best source of information. The video documented a Chinese AI data center that was 100% powered by renewables plus CATL batteries. This observation has been met with some skepticism. I've done some additional research on the subject. Following is a synopsis of what I found based on a Perplexity query. To be honest, there's no way of knowing at this time whether or not this truly bodes ill for BE or if so, when the chickens come home to roost. Currently, the US administration has taken a very hostile stance against renewables. In other words, Bloom, just like all the AI picks & shovels may still have a good run before this becomes a threat.
>Good news — the claim is substantially true, though the YouTube video likely conflated several related developments into one story. Here's the full picture:
>China's Renewable-Powered AI Data Centers Are Real
>Envision Group just completed (August 6, 2026) the Galaxy Campus in Ulanqab, Inner Mongolia — an AI data center drawing 80% of its power from nearby wind farms via dedicated transmission lines. The initial 120 MW phase is operational, with plans to scale to 2 GW. Critically, it uses battery storage as backup instead of diesel generators — a major departure from traditional data center design (China Daily, Energy Connects/Bloomberg).energyconnects+1
>Envision also operates what it calls the world's first 100% green-power direct-supply AIDC in Chifeng, Inner Mongolia, partnered with Tencent, reducing energy costs by over 40% and cutting annual carbon emissions by ~180,000 tons (Seetao, Newswire).seetaoe+1
>This aligns with a Chinese regulation requiring all new data centers to source 80% of power from renewables.weforum
>CATL's Sodium-Ion Batteries for Data Centers
>CATL (Contemporary Amperex Technology) has indeed developed sodium-ion batteries specifically designed for AI data center energy storage. Key facts:
>At the ESIE 2026 expo in Beijing (April 2026), CATL debuted its first dedicated sodium-ion cell for grid-scale storage, explicitly positioning AIDC as a key application scenario (Energy Storage News, ESS News)energy-storage+1
>Specs: 300+ Ah capacity, 97% efficiency, 15,000+ charge cycles, operating range -40°C to 70°C with no thermal runaway in safety tests
>CATL committed $690 million to build 40 GWh of annual sodium-ion capacityad-hoc-news
>In June 2026, CATL launched the TENER Sodium storage system, with first deliveries in China starting September 2026 and 1 GWh of shipments expected by year-end (Bloomberg, The Edge Malaysia)bloomberg+1
>CATL is investing up to $942 million for a 38.1% stake in data center operator VNET Group, and its sodium-ion technology will be paired with energy storage systems installed with partners like SenseTime to stabilize power during fluctuating computing loadsad-hoc-news
>CATL's Chairman Robin Zeng explained the vision at Summer Davos 2026: renewable energy + battery storage solves the "every hour you need constant power" problem for data centers. He said CATL can now produce sodium batteries at scale for energy storage, eliminating lithium dependence, and expects to reach 100+ GWh annually within 3-5 years — enough to "support all data centers worldwide" (World Economic Forum, YouTube - No Power, No AI).youtubeweforum
>The Important Nuance
>The video likely merged two separate but related stories:
>Operational today: China has AI data centers running on 100% renewable energy (Envision's projects in Inner Mongolia), with battery storage replacing diesel backup
>Commercial rollout in 2026: CATL's sodium-ion batteries designed for AIDC energy storage are entering commercial deployment this year, but there is no confirmed report of a specific operational data center already running on CATL sodium-ion batteries as of now
>Additionally, Envision launched its own sodium-ion storage cell (180Ah, 20,000+ cycles) in March 2026, separate from CATL's — so the operational green-power data centers may eventually use Envision's own sodium cells rather than CATL's.linkedin
>The broader trend is undeniable and remarkable: in the first two months of 2026 alone, over 40% of all new energy storage installations in China went to AI computing centers — making it the single largest application for energy storage in the country.