While Seattle-based Amazon is best known for its dominant position as an online retailer, the company has been in the cloud computing space since 2006 with Amazon Web Services, a subdivision that has since become a leader in its category. It is reportedly generating around 17% of Amazon’s overall revenue, which hit $575 billion last year.

The cloud computing and retail giant signed a deal to buy electricity generated by small modular nuclear reactors. Put Amazon on the list of big technology firms embracing new nuclear technologies to fuel their data centers.

Both companies seek new sources of carbon-free electricity to meet surging demand from data centers and artificial intelligence.