Slow reserve - Technical Requirements

N.B these are draft technical requirements whilst we are engaging with industry on designing the new services. Service design and procurement strategy will be formalised through an EBR consultation.

Product Criteria​


Pre-/ Post-fault


Full Activation Time​

Providers must reach full activation within 15 minutes of instruction​

Maximum Activation Time​

( Non-zero time)

A minimum of 120 minutes​

Minimum Activation Time​

( Non-zero time)

A maximum of 30 minutes​

Maximum Recovery Period​

A maximum of 30 minutes​

Aggregation rules​

Providers can aggregate units within a GSP Group​

Dispatch Solution​

BM – BOAs / Non-BM - ASDP​

Operational Metering​

1Hz  ​

Performance Metering​


Ramp rates​

As per envelope restrictions​


60-minute nomination baseline​

slow reserve technical requirements