How Energy API Supports Renewable Energy Certificates Tracking: A Guide for Sustainability Teams

Introduction

In today's rapidly evolving energy landscape, sustainability teams face the challenge of tracking and managing Renewable Energy Certificates (RECs) effectively. The need for accurate, real-time data on energy markets is paramount for making informed decisions that align with sustainability goals. Without a reliable source of market data, teams often resort to scraping government portals or stitching together incompatible formats, leading to inefficiencies and potential inaccuracies.

This is where Energy API comes into play. By aggregating wholesale energy market data from trusted sources like OMIE, ENTSO-E, and EIA, Energy API provides a unified JSON interface that simplifies the process of tracking RECs and other energy commodities. This blog post will guide you through how Energy API supports REC tracking and the various features that make it an invaluable tool for sustainability teams.

Why Energy API

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

• One Unified Interface: Energy API replaces multiple data sources, each with different formats and schedules, with a single normalized REST surface. This means developers can access data from various providers without the hassle of managing different APIs.
• Comprehensive Coverage: With over 39 symbols across six commodity categories—electricity, gas, oil, coal, carbon, and carbon intensity—Energy API provides a holistic view of the energy market. This breadth of data allows sustainability teams to analyze trends and make informed decisions.
• Rapid Development: The consistent JSON schema across all commodities means that developers can ship features in hours, not weeks. This accelerates the development cycle, allowing teams to focus on building impactful applications rather than wrestling with data integration.
• Real-Time Data: With endpoints that provide intraday electricity curves and historical data, Energy API ensures that teams have access to the most current information, which is crucial for effective REC tracking and management.

Quick Start

Getting started with Energy API is straightforward. The base URL for 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 fetch 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 returned.
• rates: An object containing the latest prices for the requested symbols.
• currencies: The currency in which each symbol's price is quoted.

Core Endpoints

Energy API offers a variety of endpoints that are particularly useful for tracking RECs and other energy commodities. Here are four key endpoints:

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 EUA CO2, which are essential for tracking the market value of RECs.

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 -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 sustainability teams needing to analyze historical data to assess trends in REC values.

3. GET /timeseries

This endpoint provides historical series between two dates, which is 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 endpoint allows teams to visualize trends over time, which is crucial for making strategic decisions regarding RECs.

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 -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"

Expected 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 endpoint is particularly useful for sustainability teams to assess the volatility of energy prices, which can impact REC valuations.

Real-World Use Cases

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

1. Price Alert System

Developers can create a price alert system that notifies users when the price of a specific commodity, such as TTF Gas, 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.

2. ESG Dashboard

An ESG dashboard can be built to visualize the carbon intensity of electricity generation in real-time. By utilizing the /carbon-intensity endpoint, developers can display the carbon emissions associated with energy consumption, helping organizations track their sustainability goals.

3. Cost Calculator

A cost calculator can be developed to estimate monthly electricity costs based on the latest market prices. By using the /cost-estimate endpoint, developers can provide users with a simple interface to input their expected usage and receive an estimated cost based on current market rates.

FAQ

How often does the TTF gas price update?

The TTF gas price updates frequently throughout the day, reflecting real-time market conditions. This ensures that users have access to the most current pricing information for their analyses.

Can I get historical energy prices going back 5 years?

Yes, Energy API provides historical data for various commodities, allowing users to access prices going back several years. This is particularly useful for trend analysis and forecasting.

Does the API support multiple currencies?

Yes, Energy API supports multiple currencies, allowing users to specify their preferred currency for price data. This flexibility is essential for international teams working across different markets.

Conclusion

In conclusion, Energy API is a powerful tool for sustainability teams looking to track Renewable Energy Certificates and other energy commodities effectively. By providing a unified interface to access reliable market data, Energy API eliminates the pain of data integration and empowers teams to make informed decisions.

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 let the complexities of energy data hold you back—leverage the capabilities of Energy API to streamline your processes and enhance your sustainability initiatives.

Ready to get started? Try Energy API for free and unlock the potential of real-time energy market data today!