Using Energy API for Community Energy Trading Platforms: A Guide for Developers

Introduction

In the rapidly evolving landscape of energy trading, developers face significant challenges in accessing reliable market data. Traditional methods often involve scraping government portals or stitching together incompatible formats, leading to inefficiencies and delays. This is where Energy API comes into play, providing a unified REST API that aggregates wholesale energy market data from trusted sources. By leveraging this API, developers can streamline their applications, ensuring they have access to accurate and timely energy data without the hassle of manual data collection.

This blog post serves as a comprehensive guide for developers looking to integrate the Energy API into their community energy trading platforms. We will explore the key features of the API, provide practical examples, and demonstrate how to effectively utilize its endpoints to build robust energy trading applications.

Why Energy API

The Energy API stands out in the crowded field of energy data providers for several reasons:

• Unified Data Format: The Energy API normalizes data from multiple sources such as OMIE, ENTSO-E, and EIA into a single JSON interface. This eliminates the need for developers to handle various formats and naming conventions, significantly reducing development time.
• Comprehensive Coverage: With over 39 symbols across six commodity categories—electricity, natural gas, crude oil, coal, carbon allowances, and grid carbon intensity—the API provides a holistic view of the energy market. Developers can query multiple commodities in a single API call, enhancing efficiency.
• Rich Endpoints: The API offers 16 endpoints covering a wide range of functionalities, including spot prices, historical data, intraday curves, and fluctuation analysis. This breadth of features allows developers to build sophisticated applications that meet diverse market needs.
• Rapid Development: The consistent JSON schema across all commodities enables developers to ship features in hours rather than weeks. This agility is crucial in the fast-paced energy trading environment, where timely data can lead to better decision-making.

Quick Start

To get started with the Energy API, you will need to familiarize yourself with the base URL and the authentication method. The base URL for the API is:

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

Authentication is done via the api_key query parameter. Here’s how you can make your first request to retrieve the latest prices for a set of commodities:

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"

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,
"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"
}
}

In this response, the rates object contains the latest prices for the requested commodities, while the currencies object indicates the currency in which each price is quoted.

Core Endpoints

1. GET /latest

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

Key Parameters:

• symbols (required): A comma-separated list of symbols to retrieve prices for.
• base (optional): A currency filter for the response.

cURL Example:

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 success field indicates whether the request was successful, while the rates object provides the latest prices for each symbol.

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 Parameters:

• date (required): The date for which to retrieve historical prices (format: YYYY-MM-DD).
• symbols (required): A comma-separated list of symbols.
• base (optional): A currency filter for the response.

cURL Example:

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 for the specified date, allowing developers to analyze trends over time.

3. GET /timeseries

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

Key Parameters:

• start (required): The start date for the time series (format: YYYY-MM-DD).
• end (required): The end date for the time series (format: YYYY-MM-DD).
• symbols (required): A comma-separated list of symbols.
• base (optional): A currency filter for the response.

cURL Example:

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 for the specified symbols, allowing developers to visualize trends and perform analysis over the selected period.

4. GET /fluctuation

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

Key Parameters:

• start (required): The start date for the fluctuation analysis (format: YYYY-MM-DD).
• end (required): The end date for the fluctuation analysis (format: YYYY-MM-DD).
• symbols (required): A comma-separated list of symbols.
• base (optional): A currency filter for the response.

cURL Example:

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,TTF_GAS" \
--data-urlencode "api_key=YOUR_API_KEY"

JSON Response:

{
"success": true,
"fluctuations": {
"BRENT_CRUDE": {
"start_value": 76.30,
"end_value": 75.90,
"change": -0.40,
"change_pct": -0.52
},
"TTF_GAS": {
"start_value": 46.80,
"end_value": 47.10,
"change": 0.30,
"change_pct": 0.64
}
}
}

This response provides valuable insights into price movements over the specified period, enabling developers to assess market volatility.

Real-World Use Cases

1. Price Alert System

Developers can build a price alert system that notifies users when a commodity price reaches a certain threshold. By utilizing the /latest endpoint, the application can continuously monitor prices and send alerts via email or SMS when specified conditions are met.

2. ESG Dashboard

Energy companies focused on sustainability can create an ESG dashboard that visualizes carbon intensity data. By leveraging the /carbon-intensity endpoint, developers can display real-time carbon emissions data, helping organizations track their environmental impact.

3. Cost Calculator

A cost calculator can be developed to estimate monthly electricity costs based on the latest prices. By using the /cost-estimate endpoint, developers can provide users with a simple interface to input their expected usage and receive an estimated cost based on current market prices.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market data available from the EEX exchange. Developers can use the /latest endpoint to retrieve the most current price at any time.

Can I get historical energy prices going back 5 years?

Yes, the Energy API allows you to access historical prices for various commodities. By using the /historical and /timeseries endpoints, developers can retrieve data for specific dates or ranges, enabling comprehensive historical analysis.

Does the API support multiple currencies?

Absolutely! The Energy API supports multiple currencies, allowing developers to specify a base currency for their requests. This flexibility ensures that users can view prices in their preferred currency, enhancing usability.

Conclusion

Integrating the Energy API into your community energy trading platform can significantly enhance your application's capabilities. By providing access to reliable and normalized energy market data, the API empowers developers to build innovative solutions that address real-world challenges in energy trading.

Whether you're creating a price alert system, an ESG dashboard, or a cost calculator, the Energy API offers the tools you need to succeed. Don't let the complexities of data collection slow you down—leverage the power of the Energy API to streamline your development process and deliver value to your users.

Ready to get started? Try Energy API for free today and unlock the potential of energy data for your applications!