Portugal.
Status: operational; MARI live from 28 November 2024, aFRR European-product implementation not yet operational in 2025.
Wholesale design: MIBEL/EU-coupled zonal market; replacement reserves use TERRE and mFRR uses MARI; aFRR/PICASSO implementation remained in development during 2025.
Market type
Jurisdictional market
Operators
REN · OMIE
Dispatch model
self-scheduling energy market with REN balancing activations
Where energy trades
Where does energy trade in Portugal electricity market?
Energy in Portugal electricity market trades in 3 layers: day-ahead, intraday and balancing.
What a battery can sell
What ancillary services can a battery sell in Portugal electricity market?
Portugal electricity market has 4 ancillary-service products, across 4 families — frequency containment, automatic frequency restoration, manual frequency restoration and replacement reserve: automatic Frequency Restoration Reserve, Frequency Containment Reserve, manual Frequency Restoration Reserve, Replacement Reserve. Response timing, direction and eligibility for each are in the cards below, as the official sources state them.
Facts below are stated as the official sources state them. A missing line means the
source does not state that value — never that the value is zero.
Frequency containment
Frequency Containment Reserve
operational
Contain frequency deviations before frequency-restoration processes take over.
Direction
symmetric or separate upward/downward according to synchronous area and national procurement
Full activation
30 s
Trigger / range
continuous response to local frequency deviation; exact deadband and droop are national/synchronous-area technical parameters
Eligibility
prequalified generation, storage or demand resources meeting synchronous-area and national TSO requirements
Typical procurement
Dynamic or not publicly stated
Pricing
national/regional rules
Thirty seconds is the Continental Europe full-activation time, not a universal Europe-wide value.
Continental Europe requirement for a frequency deviation of at least 200 mHz; do not apply to Nordic FCR products
Automatic frequency restoration
automatic Frequency Restoration Reserve
operational in participating markets; rollout continued
Restore frequency and area-control error and release FCR after an imbalance.
Direction
separate upward and downward
Full activation
5 min
Trigger / range
activated from TSO control-area needs rather than a single public frequency threshold
Eligibility
prequalified balancing service providers; aggregation rules are national
Typical procurement
Dynamic or not publicly stated
Pricing
capacity pricing is national; common merit-order activation and marginal pricing apply through PICASSO subject to implementation rules
A common balancing-energy product does not imply common national capacity procurement, qualification or settlement.
EU standard-product full activation time; before 18 December 2025 national products and transition rules still apply and have to be checked market by market
Manual frequency restoration
manual Frequency Restoration Reserve
operational in national markets; MARI integration continued
Restore system balance manually or by automated dispatch after faster reserves and release aFRR/FCR.
Direction
separate upward and downward
Full activation
750 s
Sustain
at least 5 min
Trigger / range
TSO activation based on imbalance, reserve need and common merit order; not a single frequency threshold
Eligibility
prequalified balancing service providers; aggregation and telemetry requirements are national
Typical procurement
Dynamic or not publicly stated
Pricing
national capacity rules and common-platform energy pricing under the implementation framework
The 12.5-minute value is a standard-product maximum full-activation time; legacy national tertiary products may use different labels or timings.
maximum full activation time for the EU standard product; legacy national products may differ
Replacement reserve
Replacement Reserve
operational in participating national implementations; TERRE operations ended 30 December 2025 ahead of decommissioning
Replace restoration reserves and cover longer-lasting imbalances with slower resources.
Direction
separate upward and downward
Full activation
30 min
Sustain
at least 15 min
Trigger / range
TSO activation from replacement-reserve need through national arrangements or TERRE
Eligibility
prequalified balancing service providers capable of the scheduled block product
Typical procurement
Dynamic or not publicly stated
Pricing
common merit-order activation through TERRE where connected
TERRE platform status changed at year-end 2025; the product should not be presented as a still-growing platform after that date.
maximum full activation time for the European RR standard product
Getting paid to exist
Does Portugal electricity market have a capacity mechanism?
No. Portugal electricity market's capacity/adequacy arrangement: No operational Portuguese adequacy capacity mechanism.
No operational Portuguese adequacy capacity mechanism
no operational market-wide Capacity Market or strategic reserve identified in ACER's 2025 mapping
Auction held in 2025
No — No capacity auction for this market was found to have been held during 2025 in the sources reviewed.
Balancing-capacity procurement is an operational reserve arrangement.
Current as of · from the
Global Electricity Market Catalogue v1.2.0 (compiled to , CC BY 4.0). Facts belong to the linked official authorities;
verify the current rules before design or bidding decisions.
Questions
Common questions about Portugal electricity market
Who operates Portugal electricity market?
Portugal electricity market covers Portugal and is operated by REN and OMIE.
Was a qualifying capacity event held in Portugal electricity market in 2025?
No. No operational Portuguese adequacy capacity mechanism: no qualifying 2025 event is recorded. No capacity auction for this market was found to have been held during 2025 in the sources reviewed.
How is energy traded, priced and settled in Portugal electricity market?
Portugal electricity market: MIBEL/EU-coupled zonal market; replacement reserves use TERRE and mFRR uses MARI; aFRR/PICASSO implementation remained in development during 2025. dispatch — self-scheduling energy market with REN balancing activations.