Creating Impactful Energy Policy Simulations: A Developer’s Guide with Energy API

Introduction

In today's fast-paced energy market, developers and data engineers face significant challenges when it comes to accessing reliable and comprehensive market data. The energy sector is characterized by a multitude of data sources, each with its own formats, schedules, and naming conventions. This fragmentation makes it difficult for developers to create impactful applications that rely on accurate energy data. Whether you're building a trading platform, an ESG dashboard, or a cost calculator, the need for a unified and normalized data source is paramount.

This blog post aims to provide a comprehensive guide for developers looking to leverage the Energy API to create impactful energy policy simulations. We will explore the features of the Energy API, demonstrate how to get started, and provide real-world use cases that highlight its capabilities. By the end of this post, you will have a clear understanding of how to integrate energy market data into your applications efficiently.

Why Energy API

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

• Unified Data Access: The Energy API aggregates data from multiple trusted sources such as OMIE, ENTSO-E, and EIA, providing a single RESTful interface. This eliminates the need for developers to scrape government portals or stitch together incompatible formats, saving valuable 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 Energy API offers extensive market data. Developers can query multiple commodities in a single API call, streamlining their data retrieval processes.
• Rapid Development: The Energy API's consistent JSON schema across all commodities allows developers to ship features in hours rather than weeks. This rapid development cycle is crucial for teams looking to stay competitive in the energy market.
• Real-Time and Historical Data: The API provides access to both real-time and historical data, enabling developers to build applications that require up-to-date information as well as trend analysis over time.

Quick Start

To get started with the Energy API, you'll 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 to make your first request to retrieve the latest prices for a selection 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 success field indicates whether the request was successful. The date field shows the date of the data retrieval, while the rates object contains the latest prices for the requested commodities. The currencies object specifies the currency for each rate.

Core Endpoints

Now that you have a basic understanding of how to make requests to the Energy API, let's dive deeper into some of the core endpoints that are particularly relevant for developers working on energy policy simulations.

1. GET /latest

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

Key Params: symbols (required), base (optional), category (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 the requested commodities, which can be used for real-time monitoring or alert systems.

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 endpoint is particularly useful for historical analysis and reporting, allowing developers to track price changes over time.

3. GET /timeseries

This endpoint provides historical series between two dates, which is 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"
}
}

The rates object contains historical prices keyed by date, making it easy to visualize trends over time.

4. GET /fluctuation

This endpoint provides 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 endpoint is useful for analyzing price volatility and making informed trading decisions.

Real-World Use Cases

Now that we've covered the core endpoints, let's explore some concrete examples of how developers can leverage the Energy API to build impactful applications.

1. Price Alert System

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

2. ESG Dashboard

For teams focused on sustainability, an ESG dashboard can be built using the /carbon-intensity and /emissions/latest endpoints. This dashboard can visualize carbon intensity data and emissions allowances, helping organizations track their environmental impact and compliance with regulations.

3. Cost Calculator

A cost calculator can be developed to estimate monthly electricity costs based on the latest prices retrieved from the /cost-estimate endpoint. Users can input their expected usage, and the application can provide an estimate of their monthly expenses, helping them make informed decisions about energy consumption.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market conditions. 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 provides access to historical prices, allowing developers to retrieve data for specific past dates or over a range of dates using the /historical and /timeseries endpoints.

Does the API support multiple currencies?

Yes, the Energy API supports multiple currencies. Developers can specify the base currency in their requests, and the API will return prices in the requested currency, making it easy to integrate into applications with international users.

Conclusion

The Energy API offers a powerful solution for developers looking to access reliable and comprehensive energy market data. By providing a unified interface to multiple data sources, the API simplifies the process of integrating energy data into applications, enabling developers to focus on building impactful solutions rather than dealing with data fragmentation.

Whether you're building a price alert system, an ESG dashboard, or a cost calculator, the Energy API provides the tools you need to succeed. With its extensive coverage, rapid development capabilities, and real-time data access, the Energy API is the fastest path from zero to production energy data.

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