Modeled Line Rating Forecasts

Hourly, vintage-stamped screening estimates for mapped transmission lines across every supported US grid. Each row joins a public line-map snapshot to route-sampled forecast weather, a published owner or regional assumption profile, the validation margin, model version, and materialization run. The result is a temperature-adjusted IEEE 738 conductor estimate; it is not an operator facility rating or transfer limit because the public map does not provide the actual conductor, clearance, relay, transformer, or terminal-equipment limits.

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Schema39

Column

Type

valid_timeDateTime64(6, 'UTC')

forecast_as_ofDateTime64(6, 'UTC')

line_snapshot_timeDateTime64(6, 'UTC')

isoLowCardinality(String)

line_idLowCardinality(String)

line_nameNullable(String)

voltage_kvNullable(Float64)

methodLowCardinality(String)

model_versionLowCardinality(String)

rating_ratioFloat64

rating_change_pctFloat64

ambient_temp_cNullable(Float64)

temperature_guardband_cNullable(Float64)

applied_wind_msNullable(Float64)

applied_wind_angle_degNullable(Float64)

applied_solar_wm2Nullable(Float64)

applied_pressure_paNullable(Float64)

observed_wind_msNullable(Float64)

observed_wind_angle_degNullable(Float64)

observed_solar_wm2Nullable(Float64)

observed_pressure_paNullable(Float64)

bearing_degNullable(Float64)

limiting_lonNullable(Float64)

limiting_latNullable(Float64)

sample_countNullable(Int32)

weather_fallback_sample_countNullable(Int32)

assumption_profileLowCardinality(String)

assumption_providerLowCardinality(String)

assumption_sourceString

reference_ambient_temp_cFloat64

reference_wind_msFloat64

reference_wind_angle_degFloat64

reference_solar_wm2Float64

max_conductor_temp_cFloat64

representative_voltage_kvInt32

conductor_diameter_mFloat64

weather_sourceLowCardinality(String)

run_idString

ingested_atDateTime64(6, 'UTC')

Sample rows

valid_time	forecast_as_of	line_snapshot_time	iso	line_id	line_name	voltage_kv	method	model_version	rating_ratio	rating_change_pct	ambient_temp_c	applied_wind_ms	applied_wind_angle_deg	applied_solar_wm2	applied_pressure_pa	observed_wind_ms	observed_wind_angle_deg	observed_solar_wm2	observed_pressure_pa	bearing_deg	limiting_lon	limiting_lat	sample_count	assumption_profile	assumption_provider	assumption_source	reference_ambient_temp_c	reference_wind_ms	reference_wind_angle_deg	reference_solar_wm2	max_conductor_temp_c	representative_voltage_kv	conductor_diameter_m	weather_source	run_id	ingested_at
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301442	UNKNOWN307652 → UNKNOWN307382	115	ambient_adjusted	ieee738-hrrr-v2	1.101053	10.1053	31.1154	0.6096	90	1000	101325	1.8074	324.1132	700.6279	101325	-94.8696	-119.726542	36.693244	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301451	Line 301451	110	ambient_adjusted	ieee738-hrrr-v2	1.295068	29.5068	11.0049	0.6096	90	1000	101325	5.0805	230.4887	87.313	101325	-39.1565	-120.008681	39.521229	4	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301454	MIDWAY → KERN	230	ambient_adjusted	ieee738-hrrr-v2	1.100071	10.0071	31.3803	0.6096	90	1000	101325	2.5364	335.2804	707.1409	101325	90.2733	-119.273294	35.38721	3	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301456	TAP310626 → MOVAL	115	ambient_adjusted	ieee738-hrrr-v2	1.120776	12.0776	29.2581	0.6096	90	1000	101325	4.2758	260.5684	710.4624	101325	-178.3556	-117.174994	33.923209	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301458	SAN MATEO → EASTSHORE	230	ambient_adjusted	ieee738-hrrr-v2	1.228591	22.8591	18.7657	0.6096	90	1000	101325	2.0911	221.9056	192.8744	101325	117.4861	-122.318031	37.583008	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301464	GREEN VALLEY → CAMP EVERS	115	ambient_adjusted	ieee738-hrrr-v2	1.220623	22.0623	19.2145	0.6096	90	1000	101325	3.1165	253.2834	596.1018	101325	3.8418	-121.76026	36.952022	3	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301470	SOUTH POINT ENERGY CENTER → SOUTHPOINT	230	ambient_adjusted	ieee738-hrrr-v2	1.023179	2.3179	38.0935	0.6096	90	1000	101325	9.6106	190.8547	687.9489	101325	2.6165	-114.532565	34.867886	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301472	VILLA PARK → LEWIS	230	ambient_adjusted	ieee738-hrrr-v2	1.149269	14.9269	26.7625	0.6096	90	1000	101325	5.0981	229.5416	702.5513	101325	-96.3678	-117.834413	33.815525	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301474	SAN LUIS OBISPO → MORRO BAY	115	ambient_adjusted	ieee738-hrrr-v2	1.206594	20.6594	20.6915	0.6096	90	1000	101325	4.7796	278.2257	718.4246	101325	-125.6511	-120.63489	35.261683	3	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301479	MWD EASTSIDE RES TAP → VALLEY	115	ambient_adjusted	ieee738-hrrr-v2	1.108807	10.8807	30.3901	0.6096	90	1000	101325	3.8478	230.5687	709.5712	101325	-48.6425	-117.156656	33.738934	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301488	SUN CITY → VALLEY	115	ambient_adjusted	ieee738-hrrr-v2	1.108807	10.8807	30.3901	0.6096	90	1000	101325	3.8478	230.5687	709.5712	101325	-9.8583	-117.156656	33.738934	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301494	MAGGIE CREEK → FALCON	120	ambient_adjusted	ieee738-hrrr-v2	1.16592	16.592	24.8513	0.6096	90	1000	101325	7.0902	272.9901	650.907	101325	-89.7528	-116.495249	40.81602	3	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301506	KASSON TAP 1 → KASSON	115	ambient_adjusted	ieee738-hrrr-v2	1.198716	19.8716	21.5114	0.6096	90	1000	101325	7.0133	281.4743	166.5985	101325	130.5437	-121.341357	37.745809	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301510	PROCESSING SITE → HOMESTAKE	115	ambient_adjusted	ieee738-hrrr-v2	1.233713	23.3713	17.8164	0.6096	90	1000	101325	2.9231	226.8462	411.7989	101325	84.5771	-122.433162	38.874159	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301513	LIGHTPIPE → ALAMITOS	230	ambient_adjusted	ieee738-hrrr-v2	1.156298	15.6298	26.0817	0.6096	90	1000	101325	5.1448	236.965	701.512	101325	91.3779	-118.174525	33.880181	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301522	EASTGATE → ROSE CANYON	69	ambient_adjusted	ieee738-hrrr-v2	1.158258	15.8258	25.2199	0.6096	90	1000	101325	4.8485	276.3975	709.1568	101325	152.1728	-117.200835	32.884818	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	69	0.0183	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301527	ROSE → PACIFIC PIPELINE	70	ambient_adjusted	ieee738-hrrr-v2	1.140828	14.0828	26.9767	0.6096	90	1000	101325	2.8525	341.9091	716.2016	101325	167.6317	-118.942802	34.991829	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	69	0.0183	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301537	CHRISTIE → SOBRANTE	115	ambient_adjusted	ieee738-hrrr-v2	1.234586	23.4586	17.7225	0.6096	90	1000	101325	3.4389	230.3305	116.6684	101325	139.5573	-122.208497	37.90565	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301636	MERCURY → JACKASS FLATS	138	ambient_adjusted	ieee738-hrrr-v2	1.118946	11.8946	29.4322	0.6096	90	1000	101325	13.0674	187.6304	690.4922	101325	-69.8128	-116.145751	36.681644	3	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301547	METCALF 2 → EL PATIO	115	ambient_adjusted	ieee738-hrrr-v2	1.212118	21.2118	20.1125	0.6096	90	1000	101325	2.5354	256.2857	176.8154	101325	-124.1542	-121.745896	37.226312	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301548	TAP308169 → BARRETT LAKE	69	ambient_adjusted	ieee738-hrrr-v2	1.144801	14.4801	26.5791	0.6096	90	1000	101325	5.6091	268.4361	725.3242	101325	-152.7816	-116.679818	32.653437	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	69	0.0183	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301552	MEAD → CAMINO	230	ambient_adjusted	ieee738-hrrr-v2	1.043875	4.3875	36.346	0.6096	90	1000	101325	10.6448	191.9074	675.3032	101325	129.0562	-114.834742	35.927807	11	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301545	COTTONWOOD → TAP310915	115	ambient_adjusted	ieee738-hrrr-v2	1.155976	15.5976	25.8408	0.6096	90	1000	101325	2.1145	253.9578	727.6549	101325	-167.5081	-116.861249	34.372503	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	115	0.0277	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301604	KESWICK → SULPHUR	230	ambient_adjusted	ieee738-hrrr-v2	1.258363	25.8363	15.5832	0.6096	90	1000	101325	2.992	158.8987	209.5293	101325	100.2657	-122.382775	40.601822	2	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728
2026-09-03 23:00:00.000000	2026-09-01 09:45:06.490229	2026-09-01 07:05:09.000000	CAISO	line-301613	WHITE ROCK → LAKE	230	ambient_adjusted	ieee738-hrrr-v2	1.25797	25.797	15.6258	0.6096	90	1000	101325	0.4615	69.256	29.017	101325	167.7828	-121.132065	38.657119	3	caiso-sce-public	Southern California Edison	https://www.sce.com/sites/default/files/custom-files/Web%20files/SCE_InterconnectionHandbook.pdf	40	0.6096	90	1000	90	230	0.0362	public_forecast_fallback	bcdf5cc7-b712-486d-a920-d259e39e920c	2026-09-02 01:43:38.432728

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