Empowering Energy Market Startups: How to Utilize Energy API for Rapid Prototyping

Introduction

In today's fast-paced energy market, startups and established companies alike face the daunting challenge of accessing reliable and timely market data. The energy sector is characterized by a multitude of data sources, each with its own formats, schedules, and naming conventions. This fragmentation can lead to significant delays in decision-making and increased operational costs, particularly for developers and data engineers who need to aggregate and normalize this data for analysis and application development.

Fortunately, Energy API offers a solution that empowers energy market startups to rapidly prototype and deploy applications without the hassle of scraping government portals or stitching together incompatible data formats. By providing a unified REST API that aggregates wholesale energy market data from trusted sources, Energy API enables developers to focus on building innovative solutions rather than wrestling with data integration challenges.

Why Energy API

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

• Unified Data Access: With Energy API, developers can access data from multiple sources—such as OMIE, ENTSO-E, EIA, and ESIOS—through a single, normalized REST interface. This eliminates the need to manage different data formats and schedules, allowing teams to ship features in hours instead of weeks.
• 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 ensures that developers have access to the information they need to make informed decisions.
• Rich Endpoints: Energy API offers 16 endpoints that cover a wide range of functionalities, from retrieving spot prices and historical data to analyzing fluctuations and generating cost estimates. This versatility allows developers to build a variety of applications tailored to their specific needs.
• Consistent JSON Schema: Every commodity is returned in the same JSON schema, simplifying the integration process and reducing the learning curve for developers. This consistency means that once you understand how to work with one endpoint, you can easily adapt to others.

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:

• success: Indicates whether the request was successful.
• date: The date of the data retrieved.
• base: The base currency for the rates provided.
• rates: An object containing the latest prices for the requested symbols.
• dates: The dates corresponding to each symbol's price.
• currencies: The currency in which each symbol's price is quoted.

Core Endpoints

Energy API provides a variety of endpoints that cater to different data needs. Here are four key endpoints relevant to developers:

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"

Expected 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 current market data.

2. GET /historical

This endpoint returns 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"

Expected 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 allows developers to analyze historical price trends, which is crucial for making informed trading decisions.

3. GET /timeseries

This endpoint provides 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"

Expected 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 detailed view of price movements over time, enabling developers to create visualizations and perform in-depth analyses.

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"

Expected 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 valuable insights into market volatility, which can be critical for traders looking to optimize their strategies.

Real-World Use Cases

Energy API's capabilities open the door to a variety of innovative applications. Here are three concrete examples of what developers can build:

• Price Alert System: Developers can create a system that monitors price fluctuations for specific commodities and sends alerts when prices exceed predefined thresholds. This can be achieved using the /latest and /fluctuation endpoints to track real-time changes and historical trends.
• ESG Dashboard: With increasing focus on sustainability, developers can build dashboards that visualize carbon intensity and emissions data. By leveraging the /carbon-intensity and /emissions/latest endpoints, teams can provide insights into their carbon footprint and compliance with ESG standards.
• Cost Calculator: A cost calculator can help businesses estimate their monthly electricity costs based on current market prices. By using the /cost-estimate endpoint, developers can provide users with accurate estimates based on their consumption patterns.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market conditions. This ensures that developers and traders have access to the latest pricing information for their analyses and decision-making processes.

Can I get historical energy prices going back 5 years?

Yes, Energy API allows you to access historical prices for various commodities. You can retrieve data for specific past dates or use the timeseries endpoint to analyze trends over extended periods, making it easy to gather insights from the last five years.

Does the API support multiple currencies?

Absolutely! Energy API supports multiple currencies across its endpoints. You can specify the base currency for your requests, allowing you to retrieve prices in the currency that best suits your needs.

Conclusion

In a rapidly evolving energy market, having access to reliable and comprehensive data is crucial for making informed decisions. Energy API provides a powerful solution that simplifies data access and integration, enabling developers to focus on building innovative applications without the burden of data management challenges. By leveraging the capabilities of Energy API, startups and established companies can prototype and deploy solutions faster than ever before.

Whether you're building a price alert system, an ESG dashboard, or a cost calculator, Energy API offers the tools you need to succeed. Don't let fragmented data sources hold you back—Try Energy API for free today and unlock the potential of the energy market!