---
title: "Returns the estimate for this system."
method: GET
path: "/api/v4/activations/{activation_id}/estimate"
tags: ["Estimate"]
---

# Returns the estimate for this system.

`GET /api/v4/activations/{activation_id}/estimate`

## Request

- Base URL: `https://api-qa2.enphaseenergy.com`
- URL: `https://api-qa2.enphaseenergy.com/api/v4/activations/{activation_id}/estimate`
- Auth: none declared
- TypeScript: <https://skmtc.dev/enphase/apis/commissioning-api/docs/api/v4/activations/:activation_id/estimate/get.ts> (a function with typed inputs; its response is checked against the schema)

Provides access to production estimates for a system. An estimate includes the annual degradation factor for the system as well as estimated production, in kWh, for each month. By default degrade_factor value is 0.5 and month_estimates value is an empty array.

## Path parameters

- `activation_id` integer, required

## Response `200`

OK

- object
  - `system_id` integer: The system this estimate is for.
  - `degrade_factor` string: The annual production degradation factor for the system, from year 0 of the system's life. Must be 0.0% or higher. Default 0.5%.
  - `month_estimates` string[]: The estimated monthly production of the system, in kWh. A value for each month must be provided, and must be greater than 0. Send an empty array if you need to remove monthly estimates. Default empty array

## Other responses

- `401`: Unauthorized
- `404`: Not found
- `405`: Method Not Allowed
- `429`: Too Many Requests
- `501`: Not Implemented

---

[API](https://skmtc.dev/enphase/apis/commissioning-api.md) - [All operations](https://skmtc.dev/enphase/apis/commissioning-api/llms.txt) - [OpenAPI document](https://skmtc.dev/enphase/apis/commissioning-api/revisions/73a4001046e2?raw)