Skip Rate - Summary
This is the summary skip rate and skipped volume data for each 30min period for each stage of exclusion described in the LCP methodology.
We endeavour to publish these datasets by 17:00 on business working days.
19/12/2024: in the data published today, we have corrected the handling of an edge case and updated the previous days’ data to reflect this change.
15/05/2025: We have reissued all published datasets to correct inconsistencies caused by treatment of marginal units and where accepted volume > feasible available volume. Further information about this can be found in the slides & recordings from the Skip Rate Forum on 1st May on the skip rate page of our website.
18/11/2025: We have reissued all published datasets to correct a bug that affected the exclusion of long notice units. This is to ensure consistency of published metrics, and doesn't effect a change of the skip rates methodology.
Data Explorer
Data Explorer
Table Information
settlement_period_start
| Title | Date |
|---|---|
| Type | datetime |
| Description | Datetime slice at 30min intervals. |
| Comment | |
| Example | 2024-10-11T23:55:00Z |
| Unit | DateTime UTC |
stage
| Title | Stage |
|---|---|
| Type | integer |
| Description | Stage number as described in LCP skip rate methodology |
| Comment | This number relates to the Skip rate methodology, and describes the skip volume and rate after that stage of exclusions |
| Example | 5 |
| Unit | Number |
bm_skip_rate_offers_percent
| Title | All BM Skip Rate Offers % |
|---|---|
| Type | number |
| Description | A measure of avoidable skips for offers, taking into consideration all balancing mechanism actions we could have taken over the relevant period. |
| Comment | |
| Example | 20 |
| Unit | Percentage |
bm_total_volume_skipped_offers_MWh
| Title | All BM Total Volume Skipped Offers MWh |
|---|---|
| Type | number |
| Description | The volume skipped for offers that relates the BM skips. |
| Comment | |
| Example | 50 |
| Unit | MWh |
post_system_action_skip_rate_offers_percent
| Title | Post System Action Skip Rate Offers % |
|---|---|
| Type | number |
| Description | A more targeted measure of avoidable skips for offers, not in context of all actions taken at the time. The occurrence of these skips is far less the BM Skips. |
| Comment | |
| Example | 30 |
| Unit | Percentage |
post_system_action_total_volume_skipped_offers_MWh
| Title | Post System Action Total Volume Skipped Offers MWh |
|---|---|
| Type | number |
| Description | The volume skipped for offers that relates the Post System Action Skip Rate |
| Comment | |
| Example | 100 |
| Unit | MWh |
bm_skip_rate_bids_percent
| Title | All BM Skip Rate Bids % |
|---|---|
| Type | number |
| Description | A measure of avoidable skips for bids, taking into consideration all balancing mechanism actions we could have taken over the relevant period. |
| Comment | |
| Example | 20 |
| Unit | Percentage |
bm_total_volume_skipped_bids_MWh
| Title | All BM Total Volume Skipped Bids MWh |
|---|---|
| Type | number |
| Description | The volume skipped for bids that relates the BM skips |
| Comment | |
| Example | 50 |
| Unit | MWh |
post_system_action_skip_rate_bids_percent
| Title | Post System Action Skip Rate Bids % |
|---|---|
| Type | number |
| Description | A more targeted measure of avoidable skips for bids, not in context of all actions taken at the time. The occurrence of these skips is far less the BM Skips. |
| Comment | |
| Example | 30 |
| Unit | Percentage |
post_system_action_total_volume_skipped_bids_MWh
| Title | Post System Action Total Volume Skipped Bids MWh |
|---|---|
| Type | number |
| Description | The volume skipped for bids that relates the Post System Action Skip Rate. |
| Comment | |
| Example | 100 |
| Unit | MWh |