Wind ยท Analysis
Humboldt's floating wind lease: the bay watches and waits
Floating turbines suit the deep water off the north coast. Here is what the port must build first, where the plans overlap the crab fleet, and the federal milestones reached so far.
I. Why the turbines have to float
Water depth in the lease areas runs on the order of hundreds of meters, far too deep for the fixed foundations driven into the seabed that most offshore wind uses today. A floating platform (a large buoyant hull moored to the bottom with cables and anchors) carries the turbine instead. The approach has been proven at small scale off Europe, but it has not been built at commercial scale anywhere in the United States.
Floating suits the north coast because the shelf drops away quickly and the wind is strong and steady, but it raises both cost and engineering risk. Mooring lines, dynamic cables that flex with the swell, and the assembly of very large structures at a dock are all things the industry is still learning to do at a price ratepayers can bear. The two Humboldt leases together cover roughly 200 square miles of ocean, per BOEM's maps.
II. The port has to come first
You cannot build a floating turbine the size of a high-rise out on the open water. The hulls get assembled at a dockside heavy-lift terminal and towed out whole, which means a port with deep water, a lot of flat land, and no bridge overhead to block a tall tow. Humboldt Bay is one of the few places on the California coast that fits.
The Humboldt Bay Harbor, Recreation and Conservation District (the local public agency that runs the port) has been planning a heavy-lift marine terminal on the Samoa peninsula, backed by a mix of state and federal money at last public report. That schedule has already moved more than once, and the final cost is not settled. No terminal, no local assembly, so this is the piece to watch first.
III. Who else shares that water
Lease areas overlap grounds the north coast fleet works, most visibly the Dungeness crab fishery, which is a large part of the regional economy and culture. Fishers worry about losing ground to anchors and cables, about gear conflicts, and about being consulted after decisions are already made rather than before.
Local tribes, including the Wiyot Tribe, hold cultural and fishing ties to the bay and the coast and have asked for a genuine role in how this unfolds. BOEM runs consultation processes, but how much they shape the final layout and conditions is one of the honest open questions here.
IV. The federal milestones so far
First, BOEM auctioned the leases in late 2022. Next, each developer must submit a Construction and Operations Plan (the detailed build proposal, known as a COP) that triggers a full federal environmental review, and then clear state permits on top of that. Each of those steps takes years, and any of them can stall.
Be plain about what is missing. No COP has been approved, this desk can point to no signed commercial-scale power contract, and the grid questions, interconnection and a transmission upgrade to carry north coast power toward population centers, are unresolved. Public discussion puts first power somewhere in the 2030s, which is a hope, not a schedule.
V. Worth watching this month
1. Watch for any update from the Humboldt Bay Harbor District on the Samoa heavy-lift terminal's schedule or funding, routine to check but central to everything else.
2. Check BOEM's California page for notices tied to the Humboldt leases, which are mostly procedural at this stage.
3. Watch the California Energy Commission's offshore wind planning reports, which set the state's targets and are worth a skim whenever they are updated.
4. Follow California Public Utilities Commission proceedings on offshore wind transmission, slow-moving but decisive for whether the power ever reaches the Bay Area.
5. Note the Dungeness crab season dates and any fisheries meetings, both for the fleet itself and for the shared-water talks.
Frequently asked questions
Will this power San Francisco directly?
Not directly. It would feed the same statewide grid run by the California Independent System Operator, and a buyer like CleanPowerSF could contract for a share, but there is no dedicated line from Humboldt to the city.
When might the turbines actually spin?
No one can promise a date. Public discussion points to sometime in the 2030s, and offshore timelines slip often, so treat any year you hear as a target rather than a commitment.
Why not build closer to the Bay Area?
The water off the Golden Gate is crowded with shipping and partly protected, and the best deep-water wind paired with a buildable port sits up on the north coast instead.
Will my electric bill go up because of this?
Possibly, at least early on. The first floating projects and the ports and transmission behind them are expensive, and some of that cost tends to be spread across California ratepayers rather than borne by one region.
References
- BOEM, California Activities (federal leasing agency), The agency that auctioned the leases; lease maps, boundaries, and official notices for the Humboldt and Morro Bay areas., www.boem.gov/renewable-energy/state-activities/california.
- California ISO (state grid operator), Runs the statewide grid; interconnection queue and planning that determine whether north coast power can reach load centers., www.caiso.com.
- California Energy Commission, offshore wind (state agency), State planning reports and offshore wind targets, the policy framing behind the leases., www.energy.ca.gov/programs-and-topics/topics/renewable-energy/offshore-renewable-energy.
- California Public Utilities Commission (state regulator), Proceedings on procurement and transmission that decide who buys the power and how it moves., www.cpuc.ca.gov.
- Humboldt Bay Harbor, Recreation and Conservation District (port agency), The public agency planning the Samoa heavy-lift terminal; schedule and funding updates for the port itself., humboldtbay.org.