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

# Stable Import Limit (SIL) stream

`GET /datasets/SIL/stream`

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.
            
This endpoint has an optimised JSON payload and is aimed at frequent requests for SIL data.

## Query parameters

- `from` string, date-time
- `to` string, date-time
- `bmUnit` string[]

## Response `200`

Data retrieved

- InsightsApiModelsResponsesBalancingDynamicDatasetRowsStablePortageLimitData[]
  - `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)