Hacker News new | ask | show | jobs
by sheepscreek 32 days ago
> It's easy to blame datacenters, but there are many factors at play here.

Henrico County currently has 37 data-centres with ~2 gigawatts capacity (expected to reach 3 gigawatts).

Apparently, 1 MW can power approximately 834 homes annually. So 2 gigawatts would be closer to powering > 1.6 million homes.

Surely, that kind of concentrated demand is going to affect electricity distribution costs for everyone, which is what we are seeing now.

1 comments

The county narrative is cherry picking imo and poor journalism. They are part of PJM which contains one of the largest data centers hubs. The PJM grid serves something like 67mm residents. PJM also uses an annual forward capacity auction to set prices and that is at least partly to blame in price increases. They are trying to forecast peak demand 3 years in advance to set a price for power plant owners to stay online in the event of needing that peak capacity. It’s poorly designed and why they have had such significant spikes there.
That might be so, but is also simplifying things a little too much and pointing to the issue.

"It's a poorly designed grid". PJM might serve 65M+ users, but 2GW isn't easily able to be shipped across their grid. Dominion is proposing a 180mi 525kV HVDC line (ironically enough, from southern VA to northern VA) that can handle up to 3GW. But that's a $5 billion project. That number goes up. A PJM project proposal to ship power from NJ to VA is in the order of $12B.

So yeah, the grid can handle it, but now you're foisting twenty billion dollars of costs on to your users for the benefits of 37 customers. That's a ... pretty raw ... deal for the rest of them.

(And yes, PJM already has a grid that can supply some of those needs, and the reality isn't proposing that they run a new HVDC line just for these projects, but the capacity has to come from somewhere).

Agreed, this is a difficult topic to simplify. "The grid can handle it" is almost always a * statement.

Can it handle it today? What about next year with the approved interconnects? What about in 2030? Does "handle it" include summer load or just average, what if temps are 5 degrees hotter than power models ran? What if PJM can't solve it's high priority overloads this year?

People want to talk about the grid as a binary system vs what it really is.

If serving those 37 customers forces choices that increase risk or cost for real customers (citizens, critical infrastructure like hospitals), it's a bad deal.

It seems like power utilities are optimized to solve problems, and serving these 37 customers can be framed as a solvable problem more easily than "Keeping the grid affordable and reliable" can.

Nobody has proven that those 37 customers are to blame compared to the poorly structured forward pricing system which is largely to blame for some of their recent pricing increases. Not sure where this grid can handle it narrative is coming from. Most of the woes in this article are cherry picked.
If you want to pretend the only source of information on this subject is the linked article I'm sure you can find many users here to debate within your arbitrary parameters.

Same goes for proof, which I'm sure would exclude power flow models if they were available for said debate.

Edit: We can agree the article is not comprehensive, and doesn't have data PJM and utilities have not published.

I’ve linked analyses explaining why PJM’s forward capacity market has been a major driver of recent retail rate increases, not just in this one county.

SemiAnalysis: https://newsletter.semianalysis.com/p/are-ai-datacenters-inc...

LBNL: https://emp.lbl.gov/publications/factors-influencing-recent-...

If you disagree, point to the analysis or data. Suggesting I’m “pretending” doesn’t address the argument. The article cherry-picks one county while largely ignoring the broader PJM pricing mechanics affecting millions of customers. Do better. Between pricing mechanics, input cost inflation and yes increase in demand has impact but not like the article likes to weave it.

Who said it was a poorly designed grid? I think you missed what I said. Their forward price auction system misaligns prices 3 year in advance. My point is a lot of the price increases for PJM is due to this auction system.
> poor journalism.

404 media has never been interested in being good journalism, but rather driving signups to to their website by people who don't know what proper journalism looks like