Yellowstone National Park - Haynes Administration Building
AvailableEV charging station in Mammoth, Wyoming, not on a charging network — 2 Level 2. US DOE AFDC station 87647.
At a glance
Yellowstone National Park - Haynes Administration Building is a public EV charging station at 4 Executive House Ln in Mammoth, Wyoming, not attached to a charging network. It has 2 charging ports (2 Level 2) with NEMA 14-50 connectors. The US DOE registry lists it as available, open since Aug 5, 2025.
Station record
DOE registry record
| Field | Value |
|---|---|
| AFDC station ID | 87647 |
| Network | Non-networked |
| Status | Available (E) |
| Access | Public |
| Facility | Federal government |
| Open date | Aug 5, 2025 |
| Last updated at source | Feb 2, 2026 |
Plugs
Connectors & pricing
- NEMA 14-50 — 240V outlet (RV-style plug).
Pricing: not listed in the DOE registry.
Location
- Address
- 4 Executive House Ln
- City
- Mammoth
- State
- Wyoming
- ZIP
- 82190
- Coordinates
- 44.97420, -110.70030
Within ~15 km
Nearby charging
- Gardiner, MT4 ports
Rivian Adventure Network · Available
Non-networked · Available
- Yellowstone Forever2 ports
Non-networked · Available
- Gardsinclair Ac Level 22 ports
ChargePoint · Available
Non-networked · Available
- Gardsinclair Dc Fast Level 31 ports
ChargePoint · Available
What kind of charging does Yellowstone National Park - Haynes Administration Building offer?
Of its 2 ports, 2 are Level 2. Level 2 ports are 240-volt AC chargers, typically used where a car is parked for an hour or more. That is about 28% below the Wyoming average of 2.8 ports per station. The registry lists one connector type: NEMA 14-50, 240V outlet (RV-style plug). The site is listed as a federal government location. It is flagged as workplace charging.
How does Yellowstone National Park - Haynes Administration Building compare with other stations in Mammoth?
Mammoth has 1 charging station in the DOE registry with 2 ports, the 24th-most of 40 cities and towns in Wyoming. Statewide, Wyoming has 137 stations and 378 ports, the 48th-largest station count of the 51 states and DC. The biggest station in Wyoming, Lexington at Jackson Hole in Jackson, has 10 ports.
Who operates Yellowstone National Park - Haynes Administration Building?
Yellowstone National Park - Haynes Administration Building is listed as non-networked: its chargers are not run through a charging-network account. Wyoming has 36 non-networked stations, 26% of its total.
What does the “Available” status mean?
“Available” means the station is open and in service according to the DOE registry. Its access code is public, meaning it is listed as open to any driver. It opened on Aug 5, 2025, one of 25 stations in Wyoming with a 2025 open date. The station's record was last updated at the source on Feb 2, 2026.
Frequently asked questions
How many chargers does Yellowstone National Park - Haynes Administration Building have?
Yellowstone National Park - Haynes Administration Building has 2 charging ports: 2 Level 2.
Does Yellowstone National Park - Haynes Administration Building have DC fast charging?
No. The registry lists no DC fast ports here; its 2 ports are all Level 2.
What connectors does Yellowstone National Park - Haynes Administration Building have?
Yellowstone National Park - Haynes Administration Building has NEMA 14-50 connectors.
Is Yellowstone National Park - Haynes Administration Building open to the public?
Yes. Yellowstone National Park - Haynes Administration Building is listed with public access, and its status is available.
Where is Yellowstone National Park - Haynes Administration Building?
Yellowstone National Park - Haynes Administration Building is at 4 Executive House Ln, Mammoth, WY 82190. Its coordinates are 44.97420, -110.70030.
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Dataset updated . Source: US DOE Alternative Fuels Data Center station 87647, weekly full pull.
About this data
Source: US Department of Energy Alternative Fuels Data Center (AFDC) station registry, as published October 12, 2026 — ChargeCensus refreshes it weekly. See the methodology for how records are matched, cleaned and scored.
Cite as: ChargeCensus, “Yellowstone National Park - Haynes Administration Building, Mammoth, WY (AFDC station 87647)”, https://chargecensus.com/stations/wyoming/yellowstone-national-park-haynes-administration-building-87647 (data as of October 12, 2026).