Engineering Challenges of Offshore Renewable-Powered AI Infrastructure.

Hmm!  are the AI users also going to relocate off-shore as well ? If not there is still the problem of a data connection from the mainland into some central point in the wind farm or whatever it is as well as the power connection to that equipment and whatever kit is needed to convert and regulate that. 
It may replace one heavy easily understood power cable with a rather vulnerable data connection and a large volume of kit that needs to be kept dry and maintained.

If anything, like nuclear power stations, might not these facilities, which are in effect giant data centres, be better on land, but on the coast, near where the AC grid tie is performed ?

At that point something closer to normal mains is available, it can be driven to for maintenance, rather than spend a day in a boat to reach it, and the data connections are easier to maintain.  And its dry, and you still can run pipes out to sea if wasting heat to the ocean is actually really necessary or desirable - though if there is too much of that it will be environmentally unsustainable as well, where ever you do it, and given the figures currently batted about for AI power seem to compare to our current whole country consumption, that may well be a problem.

Mike.

Hmm!  are the AI users also going to relocate off-shore as well ? If not there is still the problem of a data connection from the mainland into some central point in the wind farm or whatever it is as well as the power connection to that equipment and whatever kit is needed to convert and regulate that. 
It may replace one heavy easily understood power cable with a rather vulnerable data connection and a large volume of kit that needs to be kept dry and maintained.

If anything, like nuclear power stations, might not these facilities, which are in effect giant data centres, be better on land, but on the coast, near where the AC grid tie is performed ?

At that point something closer to normal mains is available, it can be driven to for maintenance, rather than spend a day in a boat to reach it, and the data connections are easier to maintain.  And its dry, and you still can run pipes out to sea if wasting heat to the ocean is actually really necessary or desirable - though if there is too much of that it will be environmentally unsustainable as well, where ever you do it, and given the figures currently batted about for AI power seem to compare to our current whole country consumption, that may well be a problem.

Mike.

There’s also the need for significant power conversion and regulation equipment in a harsh marine environment, which adds complexity and reliability risks.

In many ways it may make more sense to place large AI facilities on land near the coast, close to where the grid connection already exists. That provides easier access for maintenance, better data connectivity, and a controlled environment, while still allowing seawater cooling if needed.

Given the enormous power demands being discussed for AI (sometimes comparable to the electricity use of entire countries), the location and environmental impact of these facilities will become an important infrastructure question.