Energy API for ESG Reporting: Streamlining Data Collection and Analysis for Sustainability Teams

Introduction

In today's rapidly evolving energy landscape, sustainability teams face the daunting challenge of collecting and analyzing vast amounts of data for Environmental, Social, and Governance (ESG) reporting. The need for accurate, timely, and reliable energy market data has never been more critical. Traditional methods of data collection, such as scraping government portals or stitching together disparate data sources, are not only time-consuming but also prone to errors. This is where Energy API comes into play, offering a streamlined solution for data collection and analysis.

By aggregating wholesale energy market data from trusted sources like OMIE, ENTSO-E, EIA, and Ember, Energy API provides a unified JSON interface that simplifies the process for developers, data engineers, and sustainability teams. This blog post will explore how Energy API can enhance your ESG reporting efforts, making it easier to access and analyze the data you need to drive sustainability initiatives.

Why Energy API

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

One Unified Interface: Energy API replaces multiple data sources, each with its own formats and schedules, with a single normalized REST interface. This means developers can spend less time on data integration and more time on building applications that leverage this data.
Comprehensive Data Coverage: With over 39 symbols across six commodity categories—electricity, natural gas, crude oil, coal, carbon allowances, and carbon intensity—Energy API provides a wealth of information at your fingertips. This extensive coverage allows for more robust analysis and reporting.
Rapid Development: The consistent JSON schema across all commodities means that developers can ship features in hours, not weeks. This accelerates the development cycle and allows teams to respond quickly to changing market conditions.
Trusted Data Providers: Energy API aggregates data from reputable sources, ensuring that the information you rely on is accurate and up-to-date. This trustworthiness is crucial for making informed decisions in the energy market.

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, the key fields include:

success: Indicates whether the request was successful.
date: The date of the data retrieved.
base: The base currency for the rates.
rates: An object containing the latest prices for the requested symbols.
currencies: The currency in which each rate is expressed.

Core Endpoints

Energy API offers a variety of endpoints to cater to different data needs. Here are four core endpoints that are particularly relevant for ESG reporting:

1. GET /latest

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

Key Parameters:

symbols (required): A comma-separated list of symbols to retrieve.
base (optional): A currency filter for the response.
category (optional): Filter by commodity category.

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"
}
}

Field Explanation:

rates: Contains the latest prices for each requested symbol.
currencies: Indicates the currency for each rate, allowing for easy conversion and comparison.

2. GET /historical

This endpoint provides 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 that date.

Key Parameters:

date (required): The date in YYYY-MM-DD format.
symbols (required): A comma-separated list of symbols to retrieve.
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"
}
}

Field Explanation:

date: The date for which the historical prices are retrieved.
rates: Contains the historical prices for each requested symbol.

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 in YYYY-MM-DD format.
end (required): The end date in YYYY-MM-DD format.
symbols (required): A comma-separated list of symbols to retrieve.
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"
}
}

Field Explanation:

start_date and end_date: Indicate the range of dates for the historical data.
rates: Contains the historical prices keyed by date for each requested symbol.

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 in YYYY-MM-DD format.
end (required): The end date in YYYY-MM-DD format.
symbols (required): A comma-separated list of symbols to retrieve.
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
}
}
}

Field Explanation:

start_value and end_value: The prices at the start and end of the specified period.
change: The absolute change in price over the period.
change_pct: The percentage change in price over the period, providing insight into market trends.

Real-World Use Cases

Energy API can be leveraged in various real-world applications to enhance decision-making and reporting capabilities. Here are three concrete examples:

1. Price Alert System

Developers can create a price alert system that notifies users when energy prices reach a certain threshold. By utilizing the /latest endpoint, the system can continuously monitor prices for specific commodities and trigger alerts based on user-defined criteria.

2. ESG Dashboard

An ESG dashboard can be built to visualize energy consumption and carbon emissions data. By integrating data from the /timeseries and /carbon-intensity endpoints, sustainability teams can track their progress towards emissions reduction goals and present this information in an easily digestible format.

3. Cost Calculator

A cost calculator can be developed to estimate monthly energy expenses based on current market prices. By using the /cost-estimate endpoint, developers can provide users with a simple interface to input their energy usage and receive an estimated cost 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. This ensures that users have access to the latest pricing information for their analysis and reporting needs.

Can I get historical energy prices going back 5 years?

Yes, Energy API provides access to historical prices for various commodities. You can retrieve historical data for specific dates using the /historical endpoint, allowing you to analyze trends over the past five years.

Does the API support multiple currencies?

Absolutely! Energy API allows you to specify a base currency for your requests. This means you can retrieve prices in your preferred currency, making it easier to integrate the data into your existing systems.

Conclusion

In conclusion, Energy API is a powerful tool for sustainability teams and developers looking to streamline their data collection and analysis processes for ESG reporting. By providing a unified interface to access reliable energy market data, Energy API eliminates the pain of dealing with incompatible formats and disparate sources. With its comprehensive coverage, rapid development capabilities, and trusted data providers, Energy API is the fastest path from zero to production energy data.

Don't let the complexities of energy data hold you back. Try Energy API for free today and unlock the potential of your sustainability initiatives.