---
title: "Stable Import Limit (SIL)"
method: GET
path: "/datasets/SIL"
tags: ["BMRS Datasets"]
---

# Stable Import Limit (SIL)

`GET /datasets/SIL`

This endpoint provides Stable Import Limit data received from NGESO.
Stable Import Limit is a negative megawatt value, expressing the minimum stable operating level at which a particular BM Unit can import power from the transmission system.
            
If no date window is chosen, the search will default to results from last 24 hours.

## Query parameters

- `from` string, date-time
- `to` string, date-time
- `bmUnit` string[]
- `format` 'json' | 'xml' | 'csv'

## Response `200`

Data retrieved

- InsightsApiModelsResponsesDatasetResponse1InsightsApiModelsResponsesBalancingDynamicDatasetRowsStablePortageLimitData
  - `data` InsightsApiModelsResponsesBalancingDynamicDatasetRowsStablePortageLimitData[], nullable
    - `dataset` string, nullable
    - `settlementDate` string, date
    - `settlementPeriod` integer
    - `time` string, date-time
    - `level` integer
    - `nationalGridBmUnit` string, nullable
    - `bmUnit` string, nullable

## Other responses

- `400` — Error with query parameters - see response for details
- `429` — Too many requests
- `500` — Server error - please try again later

---

[API](https://skmtc.net/elexon/apis/bmrs-insights.md) · [All operations](https://skmtc.net/elexon/apis/bmrs-insights/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/elexon/bmrs-insights/versions/d94e9edb295e/schema)