BOEM’s land rush approach to offshore wind leasing will add up to 1086 turbine towers and 28 offshore substations (OSSs) in the Atlantic just from active projects with approved Records of Decision (RODs). (See the table below.) Another 17 active Atlantic commercial projects have yet to reach the ROD stage. Those projects should increase the total number of structures to >3000. Five more Atlantic wind lease sales are scheduled.
| project | turbine towers | offshore substations |
| Coastal VA Offshore Wind | 202 | 3 |
| Revolution Wind | 100 | 2 |
| Sunrise Wind | 94 | 1 |
| Atlantic Shores South | 200 | up to 10 |
| Ocean Wind 1 | 98 | up to 3 |
| Vineyard Wind 1 | 100 | 2 |
| Empire Wind 1 & 2 | 147 | 2 |
| New England Wind (phases 1&2) | 150 | 5 |
Per the Construction and Operations Plan (COP) for Vineyard Wind, the topsides for a conventional electrical service platform (ESP) (also known as an offshore substation or OSS) are 45 x 70 x 38 m, which is larger in surface area than a typical 6-pile oil and gas platform (~30 x 30 m), and is comparable in size to a large jackup drilling rig.
The Atlantic Shores plan calls for 10 small, 5 medium, or 4 large OSSs. (Uncertainty regarding the number and types of structures seems rather common in wind COPs.) The large OSSs have topsides that are 90 m by 50 m and rise to 63 m above MLLW. These are large offshore structures whether for wind or oil and gas.
Despite the looming decommissioning obligations, BOEM’s financial assurance requirements have been relaxed to facilitate wind development.
Per BOEM, the “Rule to Streamline and Modernize Offshore Renewable Energy Development” is intended to “make offshore renewable energy development more efficient, [and] save billions of dollars. Unfortunately, the savings associated with relaxed financial assurance requirements translates to increased risk for power customers and taxpayers.
BOEM signaled their intentions on offshore wind (OSW) decommissioning three years ago when they granted a precedent setting financial assurance waiver to Vineyard Wind. Despite compelling concerns raised by commenters, the “streamlining” regulations codified this decision.
No one knows what the financial future will be for wind projects and the responsible companies. Financial assurance should therefore be established when the structures are installed, not years into the future as allowed by the revised regulations. What leverage will BOEM have then?
Bud's Offshore Energy (BOE) 
[…] Offshore wind development is structure rich, so public confidence in the design of turbines and support platforms is critical. BOEM lists 37 active wind leases on the US OCS. Most of these leases have not yet reached the construction phase. A hold on the approval of any Construction and Operations Plans would seem to be appropriate pending completion of the Vineyard Wind investigations. […]
[…] As previously noted, offshore substations are large structures. A closeup of the Vineyard Wind 1 substation is pasted below. […]