Utilizing Energy API for Transparency in Carbon Offsetting: A Guide for ESG and Sustainability Teams

Introduction

In today's world, where sustainability and environmental responsibility are paramount, organizations are increasingly focused on their carbon footprint and the impact of their operations on the environment. For ESG (Environmental, Social, and Governance) and sustainability teams, the challenge lies in obtaining reliable and timely energy market data to make informed decisions about carbon offsetting and sustainability initiatives. Traditional methods of gathering this data often involve scraping government portals or stitching together information from disparate sources, which can be time-consuming and error-prone.

This is where Energy API comes into play. By providing a unified REST API that aggregates wholesale energy market data from trusted sources, Energy API simplifies the process of accessing critical information. This blog post will guide you through utilizing Energy API for transparency in carbon offsetting, showcasing its features, endpoints, and practical use cases for developers, data engineers, and sustainability teams.

Why Energy API

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

• One Unified Interface: Instead of dealing with multiple sources like OMIE, ENTSO-E, and EIA, Energy API offers a single normalized REST surface. This means developers can access a wide range of data without worrying about different formats, schedules, or naming conventions.
• Comprehensive Data Coverage: With over 39 symbols across six commodity categories—electricity, gas, oil, coal, carbon, and carbon intensity—Energy API provides a wealth of information that is essential for making informed decisions in the energy market.
• Rapid Development: The consistent JSON schema across all commodities allows developers to ship features in hours, not weeks. This accelerates the development process and reduces the time to market for new applications.
• Trusted Data Providers: Energy API aggregates data from reputable sources such as OMIE, ENTSO-E, EIA, FRED, and ESIOS, ensuring that users receive accurate and reliable information.

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 quoted.

Core Endpoints

Energy API offers a variety of endpoints that cater to different data needs. Below are four core endpoints relevant to carbon offsetting and sustainability efforts:

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 Brent Crude, TTF Gas, and EU ETS allowances (EUA_CO2), which are crucial for carbon offsetting calculations.

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 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 endpoint is particularly useful for analyzing historical trends in energy prices, which can inform future carbon offsetting strategies.

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"

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 data can be used to create visualizations that help stakeholders understand price trends over time, which is essential for effective carbon management.

4. GET /carbon-intensity

This endpoint provides grid carbon intensity in grams of CO2 equivalent per kilowatt-hour (gCO2eq/kWh) by country.

Key Params: country (ISO-2), base (optional)

curl -G https://energy-api.com/api/v1/carbon-intensity \
--data-urlencode "country=DE" \
--data-urlencode "api_key=YOUR_API_KEY"

Expected JSON response:

{
"success": true,
"country": "DE",
"carbon_intensity": 300,
"unit": "gCO2eq/kWh"
}

This endpoint is crucial for organizations looking to assess the carbon impact of their energy consumption and make informed decisions about carbon offsetting.

Real-World Use Cases

Energy API can be leveraged in various ways to enhance sustainability efforts. Here are three concrete examples:

1. Price Alert System

Developers can build a price alert system that notifies users when energy prices reach a certain threshold. By utilizing the /latest endpoint, the system can monitor prices for Brent Crude and TTF Gas, sending alerts via email or SMS when prices exceed predefined limits.

2. ESG Dashboard

An ESG dashboard can be created to visualize energy consumption and carbon intensity data. By integrating data from the /carbon-intensity and /timeseries endpoints, organizations can track their carbon footprint over time and assess the effectiveness of their sustainability initiatives.

3. Cost Calculator

A cost calculator can help businesses estimate their monthly energy expenses based on current market prices. By using the /cost-estimate endpoint, developers can create a tool that provides users with an estimate of their electricity costs based on their consumption patterns and the latest market prices.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market conditions. Users can access the latest prices through the /latest endpoint.

Can I get historical energy prices going back 5 years?

Yes, Energy API provides historical data for various symbols. Users can retrieve historical prices using the /historical and /timeseries endpoints, allowing for analysis of trends over extended periods.

Does the API support multiple currencies?

Yes, Energy API supports multiple currencies. Users 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 international users.

Conclusion

In conclusion, Energy API is a powerful tool for ESG and sustainability teams looking to enhance their carbon offsetting strategies with reliable energy market data. By providing a unified interface to access a wide range of energy data, Energy API eliminates the pain of data scraping and format inconsistencies, allowing developers to focus on building impactful applications.

Whether you are building a price alert system, an ESG dashboard, or a cost calculator, Energy API offers the endpoints and data you need to succeed. Don't miss out on the opportunity to leverage this valuable resource for your sustainability initiatives. Try Energy API for free today and unlock the potential of energy data for your organization.