Getting Started with the Energy API

Introduction

In today's fast-paced energy market, access to reliable and timely data is crucial for making informed decisions. Energy traders, data engineers, and sustainability teams often face significant challenges when trying to gather wholesale energy market data. The traditional methods of scraping government portals or stitching together incompatible formats can be time-consuming and error-prone. This is where Energy API comes into play, offering a unified REST API that aggregates data from multiple trusted sources into a single, easy-to-use interface.

With Energy API, developers can access a wealth of information on electricity, natural gas, crude oil, coal, carbon allowances, and grid carbon intensity. This blog post will guide you through the essential features of Energy API, demonstrating how it can streamline your data acquisition process and empower you to build robust applications without the hassle of managing disparate data sources.

Why Energy API

Energy API stands out in the crowded landscape of energy data providers for several compelling reasons:

• Unified Data Access: Instead of dealing with multiple APIs, each with its own format and naming conventions, Energy API provides a single normalized REST surface. This means you can access data from sources like OMIE, ENTSO-E, and EIA without worrying about compatibility issues.
• Comprehensive Coverage: With over 39 symbols across six commodity categories, Energy API covers a wide range of market data. This extensive coverage allows developers to query multiple commodities in a single API call, saving time and reducing complexity.
• Rapid Development: The consistent JSON schema across all commodities means that developers can ship features in hours rather than weeks. This accelerates the development cycle and allows teams to focus on building value-added features instead of wrestling with data integration.
• Trusted Data Providers: Energy API aggregates data from reputable sources such as OMIE, ENTSO-E, and EIA, ensuring that the information you receive is accurate and reliable. This trustworthiness is essential for making informed trading and investment decisions.

Quick Start

Getting started with Energy API is straightforward. The base URL for accessing the API is:

https://energy-api.com/api/v1

To make your first request, you will need to include your API key as a query parameter. Here’s an example of how to retrieve the latest prices for Brent Crude and TTF Gas:

curl -G https://energy-api.com/api/v1/latest \
--data-urlencode "symbols=BRENT_CRUDE,TTF_GAS" \
--data-urlencode "api_key=YOUR_API_KEY"

The expected JSON response will look like this:

{
"success": true,
"date": "2026-06-11",
"base": "MIXED",
"rates": {
"BRENT_CRUDE": 74.82,
"TTF_GAS": 38.15
},
"dates": {
"BRENT_CRUDE": "2026-06-11",
"TTF_GAS": "2026-06-11"
},
"currencies": {
"BRENT_CRUDE": "USD",
"TTF_GAS": "EUR"
}
}

In this response, the success field indicates whether the request was successful, while the rates object contains the latest prices for the requested symbols.

Core Endpoints

Energy API offers a variety of endpoints to cater to different data needs. Below are some of the core endpoints that are particularly relevant for developers:

1. GET /latest

This endpoint retrieves the most recent prices for one or more symbols.

Key Params: symbols (required), base (optional)

curl -G https://energy-api.com/api/v1/latest \
--data-urlencode "symbols=BRENT_CRUDE,TTF_GAS,EUA_CO2" \
--data-urlencode "api_key=YOUR_API_KEY"

JSON Response:

{
"success": true,
"date": "2026-06-11",
"base": "MIXED",
"rates": {
"BRENT_CRUDE": 74.82,
"TTF_GAS": 38.15,
"EUA_CO2": 67.40
},
"dates": {
"BRENT_CRUDE": "2026-06-11",
"TTF_GAS": "2026-06-11",
"EUA_CO2": "2026-06-11"
},
"currencies": {
"BRENT_CRUDE": "USD",
"TTF_GAS": "EUR",
"EUA_CO2": "EUR"
}
}

The rates object provides the latest prices for each symbol requested, allowing developers to quickly access current market data.

2. GET /historical

This endpoint allows you to retrieve prices for all symbols on a specific past date. If the date falls on a non-publishing day, it returns the most recent value before it.

Key Params: date (YYYY-MM-DD, required), symbols (required), base (optional)

curl -G https://energy-api.com/api/v1/historical \
--data-urlencode "date=2025-09-15" \
--data-urlencode "symbols=BRENT_CRUDE,TTF_GAS" \
--data-urlencode "api_key=YOUR_API_KEY"

JSON Response:

{
"success": true,
"date": "2025-09-15",
"base": "MIXED",
"rates": {
"BRENT_CRUDE": 71.45,
"TTF_GAS": 36.20
},
"currencies": {
"BRENT_CRUDE": "USD",
"TTF_GAS": "EUR"
}
}

This response provides historical prices, which are essential for trend analysis and reporting.

3. GET /timeseries

This endpoint retrieves historical series between two dates, making it ideal for charting and trend analysis.

Key Params: start (required), end (required), symbols (required), base (optional)

curl -G https://energy-api.com/api/v1/timeseries \
--data-urlencode "start=2025-01-01" \
--data-urlencode "end=2025-03-31" \
--data-urlencode "symbols=BRENT_CRUDE,TTF_GAS" \
--data-urlencode "api_key=YOUR_API_KEY"

JSON Response:

{
"success": true,
"base": "MIXED",
"start_date": "2025-01-01",
"end_date": "2025-03-31",
"rates": {
"BRENT_CRUDE": {
"2025-01-02": 76.30,
"2025-01-03": 75.90
},
"TTF_GAS": {
"2025-01-02": 46.80,
"2025-01-03": 47.10
}
},
"frequencies": {
"BRENT_CRUDE": "daily",
"TTF_GAS": "daily"
},
"currencies": {
"BRENT_CRUDE": "USD",
"TTF_GAS": "EUR"
}
}

This response provides a time series of prices, which is invaluable for analyzing trends over time.

4. GET /fluctuation

This endpoint calculates the start and end values, absolute change, and percentage change over a specified period.

Key Params: start (required), end (required), symbols (required), base (optional)

curl -G https://energy-api.com/api/v1/fluctuation \
--data-urlencode "start=2025-01-01" \
--data-urlencode "end=2025-01-31" \
--data-urlencode "symbols=BRENT_CRUDE" \
--data-urlencode "api_key=YOUR_API_KEY"

JSON Response:

{
"success": true,
"fluctuation": {
"BRENT_CRUDE": {
"start_value": 76.30,
"end_value": 75.90,
"change": -0.40,
"change_pct": -0.52
}
}
}

This response provides insights into price fluctuations, which can help traders make informed decisions based on market volatility.

Real-World Use Cases

Energy API can be leveraged in various real-world applications. Here are three concrete examples:

• Price Alert System: Developers can build a price alert system that notifies users when the price of a commodity reaches a certain threshold. By using the /latest endpoint, the system can continuously monitor prices and send alerts via email or SMS when conditions are met.
• ESG Dashboard: Sustainability teams can create dashboards that visualize carbon intensity data using the /carbon-intensity endpoint. This allows organizations to track their carbon footprint and make data-driven decisions to improve their sustainability efforts.
• Cost Calculator: A cost calculator can be developed to estimate monthly electricity costs based on the latest prices. By utilizing the /cost-estimate endpoint, users can input their expected usage and receive an estimate of their energy expenses.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market conditions. This ensures that users have access to the latest pricing information for their trading and investment decisions.

Can I get historical energy prices going back 5 years?

Yes, Energy API allows you to retrieve historical prices for various symbols. You can specify the date range you are interested in, making it easy to access data from the past five years or more.

Does the API support multiple currencies?

Absolutely! Energy API supports multiple currencies, allowing you to specify a base currency for your requests. This flexibility is essential for users operating in different markets and regions.

Conclusion

In conclusion, Energy API is a powerful tool for developers and energy professionals seeking reliable market data without the complexities of traditional data acquisition methods. By providing a unified interface to access a wide range of energy market data, Energy API enables teams to focus on building innovative solutions rather than wrestling with data integration challenges.

Whether you are building a price alert system, an ESG dashboard, or a cost calculator, Energy API offers the features and capabilities you need to succeed. Don't let the complexities of data management hold you back—try Energy API for free today and unlock the potential of energy market data for your applications.