New Clear Power Path

In early 2023 we were hearing about the new power demands that will come as a result of the processes needed to make AI/machine learning work. Not much changed until Spring when news of AI companies gobbling up entire data centers to meet their requirements. Some of the 100+ MW asks almost seemed like a fantasy.

It seems like only a few years ago onsite substations became common, and everyone had signed their promises to be carbon neutral by 2030. Providers were left with a new twist to the problem to not only go green but also go bigger than ever imagined.

Why aren’t large data centers just covered in solar panels to get a green source of energy? It’s because solar just isn’t a robust enough point at the moment. Simple math says that one can achieve about 100kW per 100,000 sqft of roof-space. Furthermore, AI data centers are going to be shrinking their physical space as every 3-5 cabinets pull up to a MW of power. We could be looking at a 50,000 sqft building pulling around 50MW!

Other great alternatives while we wait for solar and wind to evolve are SMR’s, onsite natural gas generation, and even hydrogen. These are all great choice with one immediate issue… they’re not immediate. Think for a second how long licensing for your own small nuclear reactor or gas/hydrogen plant might be if a simple substation is held up for 3-5years because of transformer shortages and permitting.

The industry is going to see data center providers connecting to already built gas plants and nuclear reactors behind the meter to meet the veracious power demands of AI companies desperately needing power. This will allow speed to market. Also, data center providers won’t have their scope of responsibility doubled by now running a power plant and a data center in tandem. Attaching to one or two existing plants will bring 300 MW data centers online by Q3 of this year if not early 2025. By this time we’ll see AI evolve from a novel co-pilot / assistant closer to the more mature product that it was intended to be.

DIY PDU Power Ramp

Okay so finding a data center isn’t the most difficult thing. You can just go to sites like https://baxtel.com/map or https://www.megaport.com/megaport-enabled-locations/ that have great global maps.

Then when it’s time to move in you could be faced with challenging ramp options. Power might not be available right off, or it might make financial sense to move in over time while as your migrating equipment. Rpdu’s come in block options of basically 5, 8.5, and 17kW. In many ways 17kW has become the new standard to support high powered servers and chips. It can be difficult in this form factor to not blow through a lot of distributed power in just a few cabinets.

A potential solution that we’ve found is leveraging extra deep 1200mm cabs and planning for a quad pdu setup. This way you can populate more cabinets broadly and dense them up over time. This is also a way to hedge your bets if it turns out that power requirements actually need to be tweaked.

In this case you could have options like this.

L21-30’s at 8.5kW starting – adding L6-30’s at 5kW for a total of 13.5kW. L21-30’s at 8.5kW starting – adding a 2nd set of L21-30’s 17kW (new standard) L21-30’s at 8.5kW starting – adding 460C9W’s at 17kW for 25.5kW (high density).

You get the picture. Rightsizing is the ultimate goal to not need to over commit to the facility while still having ample power. I know what you’re thinking, that doubles my rpdu budget, but that can be made up in a couple months of power savings. Whenever you walk through a datahall and see rack after rack lightly populated you’ll know their options were constrained and as much as they tried they not only got to buy another set of rpdu’s but another cab too.

It’s also a good idea to look into universal pdu options if you’re worried about managing rpdu plug types in a complex deployment.

We’re here to talk you through options in designing your cage power infrastructure.