Enhancing Energy Storage Solutions: A Guide for Developers Using Energy API

Introduction

As the energy sector continues to evolve, developers face increasing challenges in accessing reliable and timely market data. The need for accurate information on electricity, natural gas, crude oil, coal, carbon allowances, and grid carbon intensity has never been more critical. Traditional methods of data acquisition, such as scraping government portals or stitching together disparate data sources, can be cumbersome, error-prone, and time-consuming. This is where Energy API comes into play, offering a unified solution that aggregates wholesale energy market data from trusted sources.

In this blog post, we will explore how developers can enhance their energy storage solutions using the Energy API. We will delve into the key features of the API, provide practical examples, and demonstrate how to leverage its capabilities to build robust applications that meet the demands of the energy market.

Why Energy API

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

• Unified Data Access: Instead of dealing with multiple sources like OMIE, ENTSO-E, and EIA, developers can access a single REST API that normalizes data into a unified JSON format. This eliminates the need for extensive ETL (Extract, Transform, Load) processes, allowing developers to ship features in hours rather than weeks.
• Comprehensive Coverage: With over 39 symbols across six commodity categories, the Energy API provides extensive market coverage. Developers can query data for electricity, gas, oil, coal, carbon, and carbon intensity all in one place, streamlining their data integration efforts.
• Robust Endpoints: The API offers 16 endpoints that cover a wide range of functionalities, including spot prices, historical series, intraday curves, and cost estimates. This versatility allows developers to build diverse applications tailored to their specific needs.
• Trusted Data Providers: The Energy API aggregates data from reputable sources such as OMIE, ENTSO-E, EIA, and FRED, ensuring that users receive accurate and reliable information. This trustworthiness is crucial for developers who rely on data for decision-making in trading and risk management.

Quick Start

Getting started with the 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

1. GET /latest

This endpoint retrieves the most recent price for one or more symbols. It is essential for applications that require real-time data.

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"

Example 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"
}
}

In this response, the rates object provides the latest prices for each requested symbol, allowing developers to quickly access market data.

2. GET /historical

This endpoint allows users to retrieve prices for all symbols on a specific past date. It is particularly useful for historical analysis and reporting.

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"

Example 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 the historical prices for the specified date, enabling developers to conduct 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"

Example 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 over time.

4. GET /fluctuation

This endpoint calculates the start and end values, absolute change, and percentage change over a specified period. It is useful for performance analysis.

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=2025-03-31" \
--data-urlencode "symbols=BRENT_CRUDE,TTF_GAS" \
--data-urlencode "api_key=YOUR_API_KEY"

Example 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 insights into price fluctuations, enabling developers to assess market volatility and make informed decisions.

Real-World Use Cases

Here are three concrete examples of how developers can leverage the Energy API to build impactful applications:

• Price Alert System: Developers can create a price alert system that notifies users when the price of a specific commodity reaches a certain threshold. By using the /latest endpoint, the application can continuously monitor prices and send alerts via email or SMS when conditions are met.
• ESG Dashboard: An Environmental, Social, and Governance (ESG) dashboard can be built to track carbon intensity and emissions data. By utilizing the /carbon-intensity and /emissions/latest endpoints, developers can provide users with real-time insights into their carbon footprint and sustainability efforts.
• Cost Calculator: A cost calculator application can help businesses estimate their monthly energy expenses based on current market prices. By using the /cost-estimate endpoint, developers can allow users to input their expected energy consumption and receive an estimate of their costs based on the latest prices.

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 allows users to access historical prices for various commodities. By utilizing the /historical and /timeseries endpoints, developers can retrieve data for specific past dates or ranges, enabling comprehensive historical analysis.

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 easier to integrate into applications with diverse user bases.

Conclusion

In conclusion, the Energy API provides a powerful and efficient solution for developers seeking reliable energy market data. By offering a unified interface that aggregates data from trusted sources, the API eliminates the complexities associated with traditional data acquisition methods. With its comprehensive coverage, robust endpoints, and real-time capabilities, developers can build innovative applications that address the evolving needs of the energy sector.

Whether you are building a price alert system, an ESG dashboard, or a cost calculator, the Energy API is your fastest path from zero to production energy data. Don't miss out on the opportunity to enhance your energy storage solutions. Try Energy API for free today and unlock the potential of energy data for your applications.