Developing Customizable Energy Dashboards with Energy API: A Developer's Toolkit

Introduction

In today's fast-paced energy market, developers and data engineers face significant challenges when it comes to accessing reliable and up-to-date market data. Traditional methods often involve scraping government portals or stitching together data from multiple sources, which can be time-consuming and error-prone. This is where Energy API comes into play, offering a unified REST API that aggregates wholesale energy market data from trusted sources like OMIE, ENTSO-E, and EIA. By providing a single, normalized interface, Energy API empowers developers to build customizable energy dashboards and applications without the hassle of dealing with incompatible formats.

This blog post will guide you through the process of developing customizable energy dashboards using the Energy API. We will explore its key features, endpoints, and real-world use cases, demonstrating how you can leverage this powerful tool to streamline your energy data needs.

Why Energy API

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

• Unified Data Access: With Energy API, developers can access data from multiple sources through a single endpoint. This eliminates the need to manage different formats and schedules, allowing you to focus on building your application rather than data integration.
• Comprehensive Coverage: The API supports over 39 symbols across six commodity categories, including electricity, natural gas, crude oil, coal, carbon allowances, and grid carbon intensity. This breadth of data enables developers to create diverse applications that cater to various market needs.
• Rapid Development: The consistent JSON schema across all commodities means that developers can ship features in hours instead of weeks. This accelerates the development cycle and allows for quicker iterations based on user feedback.
• Trusted Data Providers: Energy API aggregates data from reputable sources, ensuring that the information you receive is accurate and reliable. This is crucial for applications that rely on real-time data for decision-making.

Quick Start

To get started with Energy API, you'll need to familiarize yourself with the base URL and how to make your first request. 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 few symbols:

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, while the rates object contains the latest prices for the requested symbols. The currencies field specifies the currency for each rate, providing clarity on the data received.

Core Endpoints

Energy API offers a variety of endpoints that cater to different data needs. Here are four key endpoints relevant to developing energy dashboards:

1. GET /latest

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

• Key Params: symbols (required), base (optional), category (optional)
• cURL Snippet:

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 symbols, while the date field indicates when the data was retrieved.

2. GET /historical

This endpoint allows you to retrieve prices for all symbols on a specific past date.

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

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, which is ideal for charting and trend analysis.

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

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 fluctuations over the selected period.

4. GET /fluctuation

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

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

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 fluctuations, enabling developers to create alerts or notifications based on significant changes in market prices.

Real-World Use Cases

Energy API can be utilized in various applications to enhance decision-making and streamline operations. Here are three concrete examples:

• Price Alert System: Developers can build a price alert system that notifies users when energy prices exceed a certain threshold. By using the /latest endpoint, the application can continuously monitor prices and send alerts via email or SMS when significant changes occur.
• ESG Dashboard: Companies focused on sustainability can create dashboards that track carbon intensity and emissions data. By leveraging the /carbon-intensity and /emissions/latest endpoints, developers can provide real-time insights into their environmental impact and compliance with regulations.
• Cost Calculator: A cost calculator can help businesses estimate their monthly energy expenses based on usage patterns. By utilizing the /cost-estimate endpoint, developers can provide users with accurate estimates based on the latest market prices and their expected consumption.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market transactions. This ensures that users have access to the latest pricing information for informed decision-making.

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 analyze trends over extended periods.

Does the API support multiple currencies?

Absolutely! Energy API supports multiple currencies, allowing you to specify the base currency for your requests. This flexibility is crucial for applications that operate in different regions or require currency conversions.

Conclusion

In conclusion, Energy API provides a powerful and flexible solution for developers looking to access reliable energy market data. By offering a unified interface and comprehensive coverage of various commodities, it simplifies the process of building energy-related applications. Whether you're creating a price alert system, an ESG dashboard, or a cost calculator, Energy API equips you with the tools you need to succeed.

Don't let the complexities of energy data hold you back. Start building your customizable energy dashboards today by exploring the capabilities of Energy API. With a 7-day free trial available, you can experience the benefits firsthand and see how it can transform your energy data needs.