Crane · 2026
BESS Pt 1
Farmington, MN · near Airlake (6.4 mi)
What this outcome means
The FAA studied the proposal and concluded it would not be a hazard to air navigation. A no-hazard determination is not permanent — it carries an expiration date, and if the structure is not built by then the case has to be re-filed.
The proposal, in the filer's words
"The proposed Project is the construction of an up to 150 MW Battery Energy Storage System (BESS). The 150 ft height would be the maximum required for a crane during construction and most equipment would be significantly shorter."
Filing details
- Case number (ASN)
- 2026-AGL-2944-OE
- Structure
- BESS Pt 1
- Type
- Crane / mobile
- Category
- Crane
- Height above ground
- 150 ft
- Height above sea level
- 1,096 ft
- Site elevation
- 946 ft
- Notice of
- New Construction
- Duration
- Temporary
- Marking & lighting
- —
Timeline
- Filed
- February 10, 2026
- Determined
- March 10, 2026
- Determination expires
- September 10, 2027
A determination that lapses before the structure is built has to be re-filed. The FAA does not send a reminder.
Who filed it
- Sponsor
- Castle Rock Solar LLC
- Representative
- Stantec Consulting Services, Inc.
Names are shown as they appear in the FAA's public record. How we handle names
Location
- Coordinates
- 44.618624, -93.098522
- Degrees / minutes / seconds
- 44°37'07.0"N 93°05'54.7"W
- County
- Dakota
- Open in a map
- Google MapsOpenStreetMap
About this record
This page is a readable copy of a public record published by the FAA's Obstruction Evaluation / Airport Airspace Analysis system. It is not the official record and may lag it. For the authoritative case status, search this ASN at the FAA's OE/AAA portal. If something here is wrong, email support@idea-engine.studio and we will correct it.
Source: FAA Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) public archive (oeaaa.faa.gov), data as of September 12, 2026. Compiled by LOS Analyzer (Idea Engine LLC). This is not an official FAA record or an FAA determination; the FAA's portal is authoritative. LOS Analyzer is not affiliated with or endorsed by the FAA.
Screening a structure of your own?
Check Part 77 and the tower's line of sight before you file
LOS Analyzer screens a proposed structure against FAA Part 77 surfaces and the control tower's sightline to the runway, terrain-aware, in minutes. It is a preliminary screening — not an FAA determination and not a substitute for a licensed engineering review.