---
title: "List solar system cost indices"
method: GET
path: "/industry/systems"
tags: ["Industry"]
---

# List solar system cost indices

`GET /industry/systems`

Return cost indices for solar systems

## Headers

- `Accept-Language` 'en' | 'de' | 'fr' | 'ja' | 'ru' | 'zh' | 'ko' | 'es'
- `If-None-Match` string
- `X-Compatibility-Date` '2025-12-16', date, required
- `X-Tenant` string

## Response `200`

OK

- object[]
  - `cost_indices` object[], required
    - `activity` 'copying' | 'duplicating' | 'invention' | 'manufacturing' | 'none' | 'reaction' | 'researching_material_efficiency' | 'researching_technology' | 'researching_time_efficiency' | 'reverse_engineering', required
    - `cost_index` number, double, required
  - `solar_system_id` integer, required

## Other responses

- `default` — Error

---

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