volt-client 1.5.0

Python client for Volt Power Analytics API - Access energy market time series data

Volt Client

Python client for the Volt Power Analytics API - Access energy market time series data.

Installation

pip install volt-client

Quick Start

import os
from volt_client import VoltClient

# Initialize with your API key
client = VoltClient(api_key=os.environ["VOLT_API_KEY"])

# Get production data
df = client.get_actual(
    "prod biomass be entso-e mw min60 actual",
    start_date="2024-01-01",
    end_date="2024-12-31"
)
print(df.head())

Features

• Simple Python interface for Volt Power Analytics API
• Support for historical data, forecasts, and forward curves
• Bulk queries for efficient data retrieval
• Timezone conversion and server-side aggregation
• Returns pandas DataFrames (or polars for better performance)

Usage Examples

Historical Data

# Single curve
df = client.get_actual(
    "prod biomass be entso-e mw min60 actual",
    start_date="2024-01-01",
    end_date="2024-12-31",
    tz="Europe/Oslo",
    agg="daily",
    agg_func="avg"
)

# Multiple curves (bulk query - much faster)
df = client.get_actual(
    ["prod biomass be entso-e mw min60 actual",
     "prod wind onshore be entso-e mw min60 actual",
     "prod solar be entso-e mw min60 actual"],
    start_date="2024-01-01",
    end_date="2024-12-31"
)

Forecast Data

df = client.get_fcast(
    "price no1 volt emps mid-term fcast",
    start_date="2025-01-01",
    end_date="2025-12-31",
    freq="weekly"  # Returns percentiles: avg, p10, p25, p50, p75, p90
)

Forward Curves

df = client.get_closing("price future no1 nasdaq eur mwh close")

Performance Tips

For large datasets, use polars mode (10x faster):

client = VoltClient(api_key="...", use_polars=True)
df = client.get_actual(...)  # Returns polars DataFrame

API Reference

Method	Description
get_actual(curve, start, end)	Get historical/actual data
get_fcast(curve, start, end)	Get forecast data
get_closing(curve)	Get forward curve prices
search(area=None)	Search available curves
get_areas()	List accessible areas
get_groups()	List accessible groups

Documentation

Full documentation: https://github.com/Volt-Power-Analytics/volt-api/tree/main/docs

Support

Contact: [e-mail]