This is impressive, but not exceedingly so.
A single NVidia H100 GPU gets 1 PFlops/s [1] for single float (32 bit) precision. There's an asterisk which says
Shown with sparsity. Specifications are one-half lower without sparsity
I have to admit that I don't understand what this means, but the apparent takeaway is that the "non-sparse" speed is 0.5 PFlops/s.
So this supercomputer has a speed equal to about 300 H100 GPUs. Not bad, but not something where one would start worrying about renewable electricity or not.
[1] https://www.nvidia.com/en-us/data-center/h100/