Dataframe: CAISO:us_ba_boundaries - US BA Boundaries

Description

Territory polygons for all 85 North American balancing authorities from EIA’s control-area regions layer (ctl_area_region, 2025-02 edition), one row per BA code. The base layer of the Balancing Authority Map chart. Cartography reference only: analytical plant-to-BA membership comes from eia860m_generators.

Data Dictionary

• ba_abbrev: str BA code (CISO, ERCO, PJM, …), unique key

• ba_name: str full BA name (trailing “(Balancing Authority)” suffix stripped at ingest)

• ba_id: int64 numeric BA identifier from the layer

• net_gen_mwh: float64 annual net generation, MWh; null when not reported

• net_gen_range: str the layer’s net-generation bucket label

• area_sq_mi: float64 territory area, square miles

• geometry_geojson: str GeoJSON Polygon/MultiPolygon, EPSG:4326

• source_layer_edited: date FeatureServer last-edit date at pull time

Notes

• The layer is EIA’s successor to the retired HIFLD “Control Areas” product (FERC-714 + EIA-861 derived, 2021 vintage). EIA’s own ArcGIS copy is access-restricted, so the pull uses the public re-share of the same layer; the parquet cache preserves the data if that item ever disappears.

• Territories are service-area approximations and overlap - do not area-weight anything against them.

• Refreshed (replaced wholesale) on every pull_all_caiso.py run.

Data Preview

Rows: 85  |  Columns: 8  |  Cache: data/opensource/us_ba_boundaries.parquet

Sample rows

First and last 5 rows in file order.

ba_abbrev	ba_name	ba_id	net_gen_mwh	net_gen_range	area_sq_mi	geometry_geojson	source_layer_edited
AEC	PowerSouth Energy Coop	404754	4894954.0	0 to 7,500,000	16884.404	{“type”:“Polygon”,“coordinates”:[[[-85.004417999591,30.9829…	2025-02-12
AECI	Associated Electric Coop Inc	404755	22610811.0	7,500,000 to 25,000,000	36959.055	{“type”:“MultiPolygon”,“coordinates”:[[[[-93.1165949999593,…	2025-02-12
AESO	Alberta Electric System Operator	614256		Not Reported	254817.421	{“type”:“Polygon”,“coordinates”:[[[-110.0000000004,59.99999…	2025-02-12
AMPL	Anchorage AK (City of)	423470		Not Reported	1824.62	{“type”:“Polygon”,“coordinates”:[[[-150.075450999564,61.156…	2025-02-12
AVA	Avista Corp	404787	11692394.0	7,500,000 to 25,000,000	20611.155	{“type”:“Polygon”,“coordinates”:[[[-116.049291999726,48.165…	2025-02-12
…	…	…	…	…	…	…	…
WACM	WAPA Rocky Mountain Region	584584	30727666.0	25,000,000 to 102,000,000	119505.29	{“type”:“MultiPolygon”,“coordinates”:[[[[-102.041524000432,…	2025-02-12
WALC	WAPA Desert Southwest Region	584590	10453031.0	7,500,000 to 25,000,000	9736.16	{“type”:“Polygon”,“coordinates”:[[[-114.819822000185,34.205…	2025-02-12
WAUW	WAPA Upper Great Plains West	601206	498334.0	0 to 7,500,000	31922.041	{“type”:“MultiPolygon”,“coordinates”:[[[[-111.825814000116,…	2025-02-12
WWA	NaturEner Wind Watch LLC	1911229	705554.0	0 to 7,500,000	35.802	{“type”:“Polygon”,“coordinates”:[[[-112.083201000326,48.915…	2025-02-12
YAD	Alcoa Power Generating Inc Yadkin Division	604932	1283511.0	0 to 7,500,000	311.646	{“type”:“Polygon”,“coordinates”:[[[-80.3774899999635,35.621…	2025-02-12

Column summary

Column	Dtype	Nulls	Min	Max
ba_abbrev	String	0	AEC	YAD
ba_name	String	0	Alberta Electric System Operator	WAPA Upper Great Plains West
ba_id	Int64	0	404754	2659915
net_gen_mwh	Float64	22	275.0	798693920.0
net_gen_range	String	0	0 to 7,500,000	Not Reported
area_sq_mi	Float64	0	3.882	751574.848
geometry_geojson	String	0	{“type”:“MultiPolygon”,“coordinates”:[[[[-102.041524000432,…	{“type”:“Polygon”,“coordinates”:[[[-94.8004759996676,60.000…
source_layer_edited	Date	0	2025-02-12	2025-02-12

DataFrame Glimpse

Rows: 85
Columns: 8
$ ba_abbrev            <str> 'YAD'
$ ba_name              <str> 'Alcoa Power Generating Inc Yadkin Division'
$ ba_id                <i64> 604932
$ net_gen_mwh          <f64> 1283511.0
$ net_gen_range        <str> '0 to 7,500,000'
$ area_sq_mi           <f64> 311.645951172264
$ geometry_geojson     <str> '{"type":"Polygon","coordinates":[[[-80.3774899999635,35.6219159998236],[-80.3703040004293,35.6915919996711],[-80.3520100003612,35.7182689996147],[-80.3008370003272,35.7390799997423],[-80.2234659999559,35.7422409998223],[-80.0616969998167,35.5444260002598],[-80.0126719999128,35.4844780002596],[-80.0021320003914,35.412128000307],[-80.0380629999075,35.3704280000522],[-80.1659770000385,35.3680960004301],[-80.3046689998744,35.5345289998135],[-80.3774899999635,35.6219159998236]]]}'
$ source_layer_edited <date> 2025-02-12

Dataframe Manifest

Dataframe Name	US BA Boundaries
Dataframe ID	us_ba_boundaries
Data Sources	EIA control-area regions layer (ArcGIS)
Data Providers	U.S. Energy Information Administration/ArcGIS Online (hosting)
Links to Providers	https://services5.arcgis.com/bsqU0jSPAuI04L89/arcgis/rest/services/Balancing_Authorities/FeatureServer/0
Topic Tags	Reference, Balancing Authorities, Map
Type of Data Access
How is data pulled?	src/pulls/pull_us_ba_boundaries.py via the ArcGIS FeatureServer API
Data available up to (min)	N/A
Data available up to (max)	N/A
Dataframe Path	data\opensource\us_ba_boundaries.parquet

Linked Charts:

• CAISO:caiso_ba_map

Pipeline Manifest

Pipeline Name	Project-Lab-Energy-Weather-Natgas-Quanto-CAISO
Pipeline ID	CAISO
Lead Pipeline Developer	Brian Nguyen
Contributors	Brian Nguyen, Claire Kim
Git Repo URL
Pipeline Web Page	Pipeline Web Page
Date of Last Code Update	2026-08-27 10:08:05
OS Compatibility	Windows, Linux, macOS
Linked Dataframes	CAISO:caiso_lmp_day_ahead_hourly CAISO:caiso_lmp_real_time_15_min CAISO:caiso_lmp_real_time_5_min CAISO:caiso_fuel_prices CAISO:caiso_fuel_regions CAISO:caiso_load CAISO:caiso_load_hourly CAISO:caiso_fuel_mix CAISO:caiso_renewables_hourly CAISO:caiso_curtailed_non_operational_generator_report CAISO:caiso_outages_aggregated_hourly CAISO:openmeteo_temperature_daily CAISO:eia860m_generators CAISO:us_ba_boundaries

Build Commands:

doit