Artificial intelligence is heating up the race to build data centers, and with BloombergNEF projecting 194 gigawatts of demand by 2035, the biggest challenge isn't computing power…. It's electricity. Faced with years-long grid connection delays, developers are turning to on-site gas generation to bring projects online faster, creating a rapidly expanding market for turbines, engines, fuel cells and battery storage. Choosing the right technology is a trade-off between speed, cost, efficiency and emissions. And while on-site generation is often seen as a temporary bridge, developers are also weighing what role those assets could play once permanent grid connections become available.

BloombergNEF published its new US data center capacity forecast on July 21, 2026, packed full of new analysis and insights about developers, timelines, regional market dynamics and on-site power considerations. Here are our key takeaways.