Added as under construction
TeraWulf Lake Mariner Data Center Expansion
TeraWulf. Under construction, 360 MW
TeraWulf's Lake Mariner campus, built on the site of the former Somerset coal fired power plant on Lake Ontario, is adding two new AI data center buildings on 61 acres in the parcel's northeastern corner, part of a 3.2 billion dollar expansion that would raise the 410 acre campus to 360 megawatts of capacity. The Niagara County Planning Board and the Somerset Town Board both gave unanimous approval to the required Planned Unit Development amendment, site plan, state environmental review, and special use permit in late 2025, and construction is underway with new operations expected in the second half of 2026, creating about 200 new jobs.
How far is it from you?
Free. Every site we track within 25 miles of your address, nearest first, with how far each one is.
Follow this project
One free email when TeraWulf Lake Mariner Data Center Expansion changes status, a hearing is scheduled, or a comment deadline opens.
Unsubscribe with one click. We do not sell the list.
Buying or living near this site? Get the address report for $19.
- Status
- Under construction
- Operator
- TeraWulf
- Applicant on record
- TeraWulf
- Location
- Somerset, Niagara County, NY (approximate, city center)
- Size
- 360 MW, 61 acres
- Cooling
- Not reported
- Utility
- National Grid
- Last updated
- September 24, 2026
What happens next
The site is under construction. The next step is opening.
Sources
- Lake Mariner campus adding more AI data center capacity, Niagara Gazette
- TeraWulf's Lake Mariner Data Center Expansion Creates 200 Jobs in Somerset, Niagara County, Westside Construction Group
- Somerset AI data center proposal gets county planner's support, Lockport Union-Sun & Journal
What it would mean nearby
The cooling design has not been reported. If it uses evaporative cooling, a 360 MW facility would draw roughly 1.1 million to 4.1 million gallons of water a day, about what 13,100 households use.
For how far this is from your own address, check it here. For what this site could mean for one street address, see the address report, $19.
History
Other tracked projects within 25 miles
Project STAMP Data Center (Stream Data Centers) Stream Data Centers
Project Rampart Data Center (PRP Real Estate Investment) PRP Real Estate Investment
Common questions
Where is the TeraWulf Lake Mariner Data Center Expansion?
It is in Somerset, Niagara County, NY.
Has the TeraWulf Lake Mariner Data Center Expansion been approved?
Yes, it was approved and is now under construction.
How big is the TeraWulf Lake Mariner Data Center Expansion?
Reported size: 360 MW, 61 acres.
Corrections and tips: use the address in the footer. We link every claim to its source.