You're comparing two vastly different types of radio observatories. That's for an array where you have dozens to hundreds of amps, signal processors and antenna

You're comparing two vastly different types of radio observatories. That's for an array where you have dozens to hundreds of amps, signal processors and antennas that require power. This would be much closer to the Arecibo telescope or the Five-hundred-meter Aperture Spherical radio Telescope in power requirements.