FactSet Power & Utilities client library for Python

The FactSet Power & Utilities API provides comprehensive global power generation and energy market data. Coverage includes power plant metadata and technical specifications, balancing authority supply and demand, power spot and forward prices, spark spreads, capacity prices, and hourly and monthly plant-level generation and emissions.

Note: Plant metadata and reference/mapping endpoints (Plants, ISO/TSO mapping, zone mapping) reflect current data only — historical or point-in-time values are not retained. The exception is GET /reference/entity-history, which provides historical entity and ownership records. Unit-level mapping information (unit names, EIA codes, project grades, and regional mappings) are included in the /units/details metadata response.

Key Features:

• Global power plant metadata including ownership, location, pipeline connections, and fuel-specific technical specifications (solar, wind, thermal)
• Balancing authority-level generation (by fuel type), demand, and net interchange data
• Power spot prices, spark spreads, capacity auction clearing prices, and forward power curves
• Hourly and monthly plant-level net generation with CO₂, N₂O, and SO₂ emissions data
• Reference data for ISO/TSO codes, price zones and hubs, and entity/ownership history

Units and abbreviations used throughout this API:

• MW — megawatt (unit of instantaneous power capacity)
• MWh — megawatt-hour (unit of energy; one MW delivered for one hour)
• $/MWh — US dollars per megawatt-hour (power price unit)
• $/MW-day — US dollars per megawatt per day (capacity market price unit)
• MMBtu — million British thermal units (heat input unit)
• Dth — dekatherm (one million BTU; unit for natural gas interconnection capacity)
• CO₂ — carbon dioxide; reported in metric tons
• SO₂ — sulfur dioxide; reported in metric tons (hourly) or short tons (monthly)
• N₂O — nitrous oxide; reported in metric tons (hourly) or short tons (monthly)
• BA — Balancing Authority; a grid operator responsible for balancing generation and load within its area
• ISO/TSO — Independent System Operator / Transmission System Operator
• EIA — US Energy Information Administration

This Python package is automatically generated by the OpenAPI Generator project:

• API version: 1.0.0
• SDK version: 0.1.0
• Build package: org.openapitools.codegen.languages.PythonClientCodegen

For more information, please visit https://developer.factset.com/contact

Requirements

• Python >= 3.7

Installation

Poetry

poetry add fds.sdk.utils fds.sdk.FactSetPowerUtilities==0.1.0

pip

pip install fds.sdk.utils fds.sdk.FactSetPowerUtilities==0.1.0

Usage

1. Generate authentication credentials.
2. Setup Python environment.

   1. Install and activate python 3.10+. If you're using pyenv:

      pyenv install 3.10.0
      pyenv shell 3.10.0
      

   2. (optional) Install poetry.

3. Install dependencies.
4. Run the following:

Example Code

from fds.sdk.utils.authentication import ConfidentialClient
import fds.sdk.FactSetPowerUtilities
from fds.sdk.FactSetPowerUtilities.api import units_api
from fds.sdk.FactSetPowerUtilities.models import *
from dateutil.parser import parse as dateutil_parser
from pprint import pprint

# See configuration.py for a list of all supported configuration parameters.

# Examples for each supported authentication method are below,
# choose one that satisfies your use case.

# (Preferred) OAuth 2.0: FactSetOAuth2
# See https://github.com/FactSet/enterprise-sdk#oauth-20
# for information on how to create the app-config.json file
#
# The confidential client instance should be reused in production environments.
# See https://github.com/FactSet/enterprise-sdk-utils-python#authentication
# for more information on using the ConfidentialClient class
configuration = fds.sdk.FactSetPowerUtilities.Configuration(
    fds_oauth_client=ConfidentialClient('/path/to/app-config.json')
)

# Basic authentication: FactSetApiKey
# See https://github.com/FactSet/enterprise-sdk#api-key
# for information how to create an API key
# configuration = fds.sdk.FactSetPowerUtilities.Configuration(
#     username='USERNAME-SERIAL',
#     password='API-KEY'
# )

# Enter a context with an instance of the API client
with fds.sdk.FactSetPowerUtilities.ApiClient(configuration) as api_client:
    # Create an instance of the API class
    api_instance = units_api.UnitsApi(api_client)
    plant_units_request = PlantUnitsRequest(
        data=PlantUnitsRequestData(),
        meta=RequestMeta(
            pagination=RequestPagination(
                limit=100,
                offset=0,
            ),
        ),
    ) # PlantUnitsRequest | 

    try:
        # Returns power plant unit metadata and technical details
        # example passing only required values which don't have defaults set
        api_response = api_instance.list_plant_units(plant_units_request)

        pprint(api_response)
    except fds.sdk.FactSetPowerUtilities.ApiException as e:
        print("Exception when calling UnitsApi->list_plant_units: %s\n" % e)

    # # Get response, http status code and response headers
    # try:
    #     # Returns power plant unit metadata and technical details
    #     api_response, http_status_code, response_headers = api_instance.list_plant_units_with_http_info(plant_units_request)


    #     pprint(api_response)
    #     pprint(http_status_code)
    #     pprint(response_headers)
    # except fds.sdk.FactSetPowerUtilities.ApiException as e:
    #     print("Exception when calling UnitsApi->list_plant_units: %s\n" % e)

    # # Get response asynchronous
    # try:
    #     # Returns power plant unit metadata and technical details
    #     async_result = api_instance.list_plant_units_async(plant_units_request)
    #     api_response = async_result.get()


    #     pprint(api_response)
    # except fds.sdk.FactSetPowerUtilities.ApiException as e:
    #     print("Exception when calling UnitsApi->list_plant_units: %s\n" % e)

    # # Get response, http status code and response headers asynchronous
    # try:
    #     # Returns power plant unit metadata and technical details
    #     async_result = api_instance.list_plant_units_with_http_info_async(plant_units_request)
    #     api_response, http_status_code, response_headers = async_result.get()


    #     pprint(api_response)
    #     pprint(http_status_code)
    #     pprint(response_headers)
    # except fds.sdk.FactSetPowerUtilities.ApiException as e:
    #     print("Exception when calling UnitsApi->list_plant_units: %s\n" % e)

Using Pandas

To convert an API response to a Pandas DataFrame, it is necessary to transform it first to a dictionary.

import pandas as pd

response_dict = api_response.to_dict()['data']

simple_json_response = pd.DataFrame(response_dict)
nested_json_response = pd.json_normalize(response_dict)

Debugging

The SDK uses the standard library logging module.

Setting debug to True on an instance of the Configuration class sets the log-level of related packages to DEBUG and enables additional logging in Pythons HTTP Client.

Note: This prints out sensitive information (e.g. the full request and response). Use with care.

import logging
import fds.sdk.FactSetPowerUtilities

logging.basicConfig(level=logging.DEBUG)

configuration = fds.sdk.FactSetPowerUtilities.Configuration(...)
configuration.debug = True

Configure a Proxy

You can pass proxy settings to the Configuration class:

• proxy: The URL of the proxy to use.
• proxy_headers: a dictionary to pass additional headers to the proxy (e.g. Proxy-Authorization).

import fds.sdk.FactSetPowerUtilities

configuration = fds.sdk.FactSetPowerUtilities.Configuration(
    # ...
    proxy="http://secret:password@localhost:5050",
    proxy_headers={
        "Custom-Proxy-Header": "Custom-Proxy-Header-Value"
    }
)

Custom SSL Certificate

TLS/SSL certificate verification can be configured with the following Configuration parameters:

• ssl_ca_cert: a path to the certificate to use for verification in PEM format.
• verify_ssl: setting this to False disables the verification of certificates. Disabling the verification is not recommended, but it might be useful during local development or testing.

import fds.sdk.FactSetPowerUtilities

configuration = fds.sdk.FactSetPowerUtilities.Configuration(
    # ...
    ssl_ca_cert='/path/to/ca.pem'
)

Request Retries

In case the request retry behaviour should be customized, it is possible to pass a urllib3.Retry object to the retry property of the Configuration.

from urllib3 import Retry
import fds.sdk.FactSetPowerUtilities

configuration = fds.sdk.FactSetPowerUtilities.Configuration(
    # ...
)

configuration.retries = Retry(total=3, status_forcelist=[500, 502, 503, 504])

Documentation for API Endpoints

All URIs are relative to https://api.factset.com/content/factset-power-utilities/v1

Class	Method	HTTP request	Description
GenerationEmissionsApi	list_hourly_generation_units	POST /generation/hourly/units	Returns hourly plant unit generation and emissions
GenerationEmissionsApi	list_monthly_generation	POST /generation/monthly	Returns monthly plant generation and emissions
MarketDataApi	list_market_data	POST /market-data	Returns balancing authority generation, demand, or interchange
MarketDataApi	list_market_data_coverage	GET /market-data/coverage	Returns balancing authority coverage
PlantsApi	list_plant_ids	GET /plants/ids	Returns discoverable power plant IDs
PricesApi	list_prices	POST /prices	Returns power spot prices, spark spreads, capacity prices, or forward prices
ReferenceApi	list_entity_history	GET /reference/entity-history	Returns entity and security history records
ReferenceApi	list_iso_mapping	GET /reference/iso-mapping	Returns ISO/TSO mapping data
ReferenceApi	list_location_mapping	GET /reference/location-mapping	Returns power price location mapping data
ReferenceApi	list_zone_mapping	GET /reference/zone-mapping	Returns price zone and hub mapping data
UnitsApi	list_plant_units	POST /units/details	Returns power plant unit metadata and technical details
UnitsApi	list_units_ownership	POST /units/ownership	Returns power plant unit ownership details

Documentation For Models

• BalancingAuthorityCoverage
• BalancingAuthorityIds
• BalancingAuthoritySubRegionIds
• CapacityPriceData
• CapacityPriceRecord
• CapacityPriceRecordAllOf
• CategoryCapacity
• CategoryDemand
• CategoryForward
• CategoryGeneration
• CategoryInterchange
• CategoryMetadata
• CategoryPipeline
• CategoryPower
• CategorySolar
• CategorySparkSpread
• CategoryThermal
• CategoryWind
• CollectionResponseMeta
• EntityHistoryRecord
• EntityHistoryResponse
• ErrorObject
• ErrorObjectLinks
• ErrorResponse
• ForwardPriceData
• ForwardPriceRecord
• ForwardPriceRecordAllOf
• HourlyGenerationRecord
• HourlyGenerationRequest
• HourlyGenerationRequestData
• HourlyGenerationResponse
• IsoMappingRecord
• IsoMappingResponse
• LocationIds
• LocationMappingRecord
• LocationMappingResponse
• MarketDataCoverageResponse
• MarketDataDemandData
• MarketDataGenerationData
• MarketDataInterchangeData
• MarketDataRecord
• MarketDataRequest
• MarketDataRequestData
• MarketDataResponse
• MonthlyGenerationRecord
• MonthlyGenerationRequest
• MonthlyGenerationRequestData
• MonthlyGenerationResponse
• PlantIdRecord
• PlantIds
• PlantIdsResponse
• PlantMetadataData
• PlantMetadataDetail
• PlantPipelineData
• PlantPipelineDetail
• PlantSolarData
• PlantSolarDetail
• PlantThermalData
• PlantThermalDetail
• PlantUnitDetail
• PlantUnitIds
• PlantUnitsRequest
• PlantUnitsRequestData
• PlantUnitsResponse
• PlantWindData
• PlantWindDetail
• PowerPriceData
• PowerPriceRecord
• PowerPriceRecordAllOf
• PriceRecord
• PriceRecordBase
• PricesRequest
• PricesRequestData
• PricesResponse
• RequestMeta
• RequestPagination
• ResponseMeta
• ResponsePagination
• SparkSpreadData
• SparkSpreadPriceRecord
• SparkSpreadPriceRecordAllOf
• SparkSpreadPricesMwh
• UnitsOwnershipDetail
• UnitsOwnershipRequest
• UnitsOwnershipRequestData
• UnitsOwnershipResponse
• ZoneMappingRecord
• ZoneMappingResponse

Documentation For Authorization

FactSetApiKey

• Type: HTTP basic authentication

FactSetOAuth2

• Type: OAuth
• Flow: application
• Authorization URL:
• Scopes: N/A

Notes for Large OpenAPI documents

If the OpenAPI document is large, imports in fds.sdk.FactSetPowerUtilities.apis and fds.sdk.FactSetPowerUtilities.models may fail with a RecursionError indicating the maximum recursion limit has been exceeded. In that case, there are a couple of solutions:

Solution 1: Use specific imports for apis and models like:

• from fds.sdk.FactSetPowerUtilities.api.default_api import DefaultApi
• from fds.sdk.FactSetPowerUtilities.model.pet import Pet

Solution 2: Before importing the package, adjust the maximum recursion limit as shown below:

import sys
sys.setrecursionlimit(1500)
import fds.sdk.FactSetPowerUtilities
from fds.sdk.FactSetPowerUtilities.apis import *
from fds.sdk.FactSetPowerUtilities.models import *

Contributing

Please refer to the contributing guide.

Copyright

Copyright 2026 FactSet Research Systems Inc

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.