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pt_eredes_carga_subestacao

E-REDES — Cargas nas Subestações

Published by E-REDES – Distribuição de Eletricidade · PT · Yearly

Archived, pending reviewpending_reviewHealthy

For each HV/MV substation of mainland Portugal's distribution network, winter and summer: the extra load it can supply with N-1 security (availability), the headroom that exists only while every transformer is in service, its guaranteed (N-1) power and its installed transformer power, in MVA, for the RARI year.

What is withheld, and why

Every value from this source is withheld. The operator’s terms do not clearly allow us to redistribute its figures, and when signals conflict the more restrictive reading wins until the operator confirms otherwise in writing. Records are still listed — with capacity.value null, access.status "withheld" and a link to the publication — so you know the operator publishes something there.

The publication is still read and kept, because operators overwrite their files and a history not recorded when it happened can never be recovered. If reuse is cleared, customers get the history as well as the present.

Same conflict as pt_eredes_capacidade_rececao: CC BY 4.0 in the licence field and English description, and a clause 6 in the Portuguese description forbidding reproduction, commercialisation or transfer to third parties without E-REDES' express authorisation. The stricter reading wins until E-REDES confirms in writing (target commercial_use_with_attribution; fallback link_only). Re-read live on 2026-09-26.

Licence and rights evidence

Licence
CC BY 4.0 (dataset metadata), contradicted by clause 6 of the Portuguese description (opens the operator’s site)
Attribution
E-REDES – Distribuição de Eletricidade, "E-REDES Open Data Portal", https://e-redes.opendatasoft.com/pages/homepage/required
Technical access
Yes
Commercial use
No
May be cached
Not established
May be redistributed
No
Derived data allowed
Not established

Evidence

Methodology

3 version(s)

E-REDES substation load headroom with N-1 security

pt_eredes_carga_n1 · vRARI 2025 (data_processed 2026-04-22)

The power a HV/MV substation can supply after the loss of its largest transformer, MV back-feed included (guaranteed power), and the part of it above the substation's natural load (availability), per season. MVA.

Capacity basis
operator calculated
Network state
n minus 1
Binding
No
Additive across assets
No — do not sum these figures
The method accounts for
reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Comparability class
pt_eredes_carga_n1
Documentation
Operator’s method (opens the operator’s site)

The operator’s own caveats

  • The information provided by E-REDES consists only of an approximation of the available capacity of the networks at any given time, and therefore does not constitute a contractual proposal.

E-REDES substation load headroom without N-1 security

pt_eredes_carga_nao_garantida · vRARI 2025 (data_processed 2026-04-22)

Installed power that is not guaranteed and exceeds the substation's natural load: extra load that can be supplied only while every transformer is in service, per season. MVA.

Capacity basis
operator calculated
Network state
n
Binding
No
Additive across assets
No — do not sum these figures
The method accounts for
reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Comparability class
pt_eredes_carga_n
Documentation
Operator’s method (opens the operator’s site)

The operator’s own caveats

  • The information provided by E-REDES consists only of an approximation of the available capacity of the networks at any given time, and therefore does not constitute a contractual proposal.

E-REDES installed transformer power per substation

pt_eredes_carga_potencia_instalada · vRARI 2025 (data_processed 2026-04-22)

The sum of the primary ratings of a HV/MV substation's transformers, as published beside its load headroom. MVA.

Capacity basis
operator published
Network state
unknown
Binding
No
Additive across assets
No — do not sum these figures
The method accounts for
reserved: not stated · allocated: not stated · pre-reserved: not stated · pending requests: not stated
Comparability class
pt_eredes_transformer_rating
Documentation
Operator’s method (opens the operator’s site)

How the publication maps to the model

availability types
["available","total","installed"]
binding
false
directions
["offtake"]
firmness
["firm","conditional","unknown"]
geometry precision
none
includes reserved projects
null
non additive
true
notes
["794 rows = 397 substations × two seasons; season (inverno_verao: Inverno → winter, Verão → summer) is a series dimension, never averaged or merged.","disponibilidade (\"guaranteed power exceeding natural load\": extra load suppliable with N-1 security, MV back-feed included) → available, firm. It is the operator's firm offtake headroom.","potencia_instalada_nao_garantida (non-guaranteed installed power exceeding natural load) → available, conditional: headroom that holds only while every transformer is in service, on top of the firm availability. Not flexible, which here means a stated curtailment band, and none is stated.","potencia_garantida (the N-1 firm rating before any load) → total, firm; potencia_instalada (sum of transformer primary ratings) → installed. Natural load, non-guaranteed power and non-guaranteed load are inputs and stay in raw_record.","Values are kept as published: availability is 0 in 137 rows, and potencia_garantida is negative in two winter rows (−0.7 Vila Nova de Cerveira, −0.2 Casal de Cinza), flagged negative_value.","ano is the reference year; the operator does not say which day of it, so records carry no effective date of their own and the run's is the dataset's data_processed.","Keyed by codigo_da_instalacao, which joins exactly to the capacity dataset's codigo (the shared eredes_instalacao identifier). Location as in pt_eredes_capacidade_rececao: municipality from the code's INE prefix, no coordinates.","Non-additive across substations: the MV back-feed that makes the N-1 figures is shared between neighbours."]
spatial scope
substation
technologies
["generic_load"]
units
["MVA"]

Query this source

curl "https://api.gridcapacityapi.com/v1/capacity/search?source=pt_eredes_carga_subestacao&limit=20" \  -H "Authorization: Bearer gc_live_..."