Voltane is built from public data. These are the sources, the credit each one asks for, and the licence it is used under. The same credits appear on the maps, in printed reports and in exports.
Voltane does not publish landowner names. Where parcel data is used, Voltane shows derived signals instead (for example single owner or owner type), never names or mailing addresses.
LBNL harmonized transmission lines (through 2024) with the HIFLD transmission snapshot of 2024-09-30 (final public release; HIFLD Open shut down in Aug 2025). Lines built since may be missing.
The maps are built on OpenStreetMap (© OpenStreetMap contributors, ODbL 1.0).
Basemap; data centers on the nuclear map.
Open Database License (ODbL) 1.0 · Credit required by the licence
Vintage: OpenStreetMap snapshot 2026-09-28 (US extract)
© OpenStreetMap contributors. Data available under the Open Database License (ODbL).
Basemap tiles (daily build, US extract) and the map style.
Tiles: ODbL Produced Work of OpenStreetMap; style code BSD-3-Clause; map design CC0 · Credited as a courtesy
Vintage: Protomaps daily build of 2026-09-30
Basemap: Protomaps (protomaps.com), © OpenStreetMap contributors.
Basemap land-cover shading at low zoom.
CC BY 4.0 · Credit required by the licence
Vintage: ESA WorldCover 2020
© ESA WorldCover project 2020 / Contains modified Copernicus Sentinel data (2020) processed by ESA WorldCover consortium.
Basemap earth and water at low zoom.
Public domain · Credited as a courtesy
Vintage: In the Protomaps build of 2026-09-30
Made with Natural Earth.
3D terrain and hillshade.
Per-source terms (public domain, CC BY, open government licences) · Credit required by the licence
Vintage: AWS Terrain Tiles as served (per-source dates vary)
Transmission lines (with LBNL).
CC BY 4.0 (SeerAI archive); the underlying data is a U.S. Government work · Credit required by the licence
Vintage: Snapshot of 2024-09-30: the final public release (HIFLD Open shut down in Aug 2025). Lines built since may be missing.
SeerAI, Inc. (2025). HIFLD Archive. Retrieved from https://www.seer.ai/ — Homeland Infrastructure Foundation-Level Data, final public release (2024-09-30). Modified by Voltane: clipped, reconciled and classified by voltage.
County boundaries; 2020 tabulation-block population, 2020 urban areas (2023 Gazetteer), TIGER/Line 2025 landmarks.
Not copyrighted; acknowledgement required · Credit required by the licence
Vintage: Cartographic boundaries 2025; 2020 Census blocks and urban areas (2023 gazetteer); TIGER/Line 2025
Source: U.S. Census Bureau — Cartographic Boundary Files (counties, 2025), TIGER/Line Shapefiles (2020 tabulation blocks, 2025 landmarks), 2023 Gazetteer Files. This product is not endorsed or certified by the Census Bureau.
Power plants and generators (EIA-860 2025, EIA-860M August 2026); natural gas pipelines.
Public domain; acknowledgement with the publication date · Credit required by the licence
Vintage: EIA-860 2025 final (released 2026-09-10); EIA-860M August 2026; gas pipelines January 2020 (latest published)
Source: U.S. Energy Information Administration (Sep 2026) — EIA-860 and EIA-860M. Source: U.S. Energy Information Administration (Apr 2020) — natural gas interstate and intrastate pipelines.
Reactor status, shut-down sites, early site permits.
U.S. Government work; no restrictions · Credited as a courtesy
Vintage: Checked 2026-10-04 (reactor list updated 2026-09-14)
Reactor status: U.S. Nuclear Regulatory Commission.
Seismic signal and bands, faults, major water, federal-site coordinates.
Public domain / CC0 · Credit requested by the source
Vintage: NSHM 2023 (CONUS, Alaska), 2021 (Hawaii); Quaternary faults archive 2026-02-23; National Atlas hydrography 2014; GNIS 2026-09-29; PAD-US 4.1
Seismic hazard: U.S. Geological Survey, National Seismic Hazard Mapping Program (NSHM 2023; 2014 map for display bands). Faults: U.S. Geological Survey, 2020, Quaternary Fault and Fold Database for the Nation, https://doi.org/10.5066/P9BCVRCK. Hydrography: U.S. Geological Survey, National Atlas 1:1,000,000. Names: U.S. Board on Geographic Names (GNIS). Map services and data available from U.S. Geological Survey, National Geospatial Program.
High-hazard dams near sites.
Public data; terms under review · Credited as a courtesy
Vintage: Data last updated 2026-09-23
Dams: U.S. Army Corps of Engineers, National Inventory of Dams.
Airport distances.
Public data; terms under review · Credited as a courtesy
Vintage: NASR cycle effective 2026-10-01
Airports: Federal Aviation Administration, NASR 28-day subscription (cycle 2026-10-01).
Modelled 100-year river flood signal.
CC BY 4.0 · Credit required by the licence
Vintage: v2.1.2 (2026-01-12)
Baugh, Calum; Colonese, Juan; D'Angelo, Claudia; Dottori, Francesco; Neal, Jeffrey; Prudhomme, Christel; Salamon, Peter (2026): Global river flood hazard maps. European Commission, Joint Research Centre [Dataset] doi: 10.2905/JRC.VD32YWG. Contains modified Copernicus Emergency Management Service information 2026. Not an official flood hazard map.
Transmission (primary source).
CC BY 4.0 · Credit required by the licence
Vintage: Published 2026-08-03, updated 2026-09-22 (lines 1994–2024)
Yin, R., Nait Belaid, Y., & Heleno, M. (2026). A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. [Data set]. Open Energy Data Initiative (OEDI). Lawrence Berkeley National Laboratory. https://data.openei.org/submissions/8742
Federal candidate sites.
U.S. Government works; Voltane compilation · Credited as a courtesy
Vintage: Official announcements 2025-04-03 to 2026-09-28 (per row)
Federal sites: Voltane list from Federal Register, energy.gov, af.mil, army.mil and NRC announcements (one source per site).
Voltane runs on open-source software: React, MapLibre GL JS, deck.gl, Motion, PMTiles, the Protomaps basemap style, Apache Arrow and others, under MIT, BSD, Apache 2.0 and ISC licences. Fonts: Inter, JetBrains Mono and Space Grotesk (SIL Open Font License 1.1); map labels in Noto Sans (SIL Open Font License 1.1). The logo's wordmark is drawn from Onest (SIL Open Font License 1.1). Every copyright notice and licence text: third-party notices.
Hero imagery AI-assisted (Higgsfield). The landing page's hero image, its light animation and the sign-in background were made with Higgsfield's generative tools; the maps and figures are drawn from the data credited above.
U.S. Government material incorporated here (data from EIA, NRC, USGS, the Census Bureau, FAA, USACE, USFWS and NOAA) is not subject to copyright protection within the United States. No agency endorses Voltane or its results.
Licence, attribution and ODbL requests (including a copy of an ODbL derived database): contact@voltane.app.