Sustainable Portfolio Management: Leveraging Energy API for ESG Performance Metrics

Introduction

In today's rapidly evolving energy landscape, the demand for reliable and accurate market data has never been greater. Energy traders, data engineers, and sustainability teams face significant challenges when trying to access wholesale energy market data. Traditional methods often involve scraping government portals or stitching together data from multiple sources, which can be time-consuming and error-prone. This is where Energy API comes into play, offering a unified solution that aggregates data from various trusted sources into a single, easy-to-use REST API.

With the increasing emphasis on Environmental, Social, and Governance (ESG) performance metrics, organizations are under pressure to make informed decisions based on accurate data. The Energy API provides a comprehensive suite of endpoints that deliver real-time and historical data across multiple energy commodities, including electricity, natural gas, crude oil, coal, and carbon allowances. This blog post will explore how developers can leverage the Energy API to enhance their portfolio management strategies and improve ESG performance metrics.

Why Energy API

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

• Unified Data Access: Instead of dealing with multiple data sources like OMIE, ENTSO-E, and EIA, developers can access all necessary data through a single API endpoint. This eliminates the need for extensive ETL (Extract, Transform, Load) processes, allowing teams 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 call, streamlining their data retrieval processes.
• Consistent JSON Schema: The API employs a uniform JSON schema across all commodities, making it easier for developers to integrate and manipulate data without worrying about varying formats or naming conventions.
• 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 timely information.

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 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 symbol's price is quoted.

Core Endpoints

Here are some of the core endpoints that developers can utilize to access valuable energy market data:

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"
}
}

Key fields include rates for each symbol, allowing developers to quickly access the latest market prices.

2. GET /historical

This endpoint provides 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 response allows users to analyze historical price trends, which is crucial for making informed trading decisions.

3. GET /timeseries

This endpoint retrieves historical series between two dates, 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 analysis.

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=2025-03-31" \
--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 response allows developers to assess market volatility and make strategic decisions based on price fluctuations.

Real-World Use Cases

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

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 application can continuously monitor prices and send alerts via email or SMS when specified conditions are met.

2. ESG Dashboard

Organizations focused on sustainability can build an ESG dashboard that visualizes carbon intensity and emissions data. By querying the /carbon-intensity and /emissions/latest endpoints, developers can provide real-time insights into their carbon footprint and track progress toward sustainability goals.

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 input their expected energy consumption and receive an estimate of their costs, enabling better budgeting and financial planning.

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 price through the /latest endpoint.

Can I get historical energy prices going back 5 years?

Yes, the Energy API allows users to retrieve historical prices for various symbols. The /historical and /timeseries endpoints can be used to access past data, although the exact range may depend on the specific symbol.

Does the API support multiple currencies?

Absolutely! The Energy API supports multiple currencies for different symbols. Users can specify their desired base currency in their requests to receive prices in that currency.

Conclusion

In conclusion, the Energy API offers a powerful solution for developers and organizations looking to access reliable energy market data without the hassle of managing multiple sources. By leveraging its comprehensive endpoints, users can enhance their portfolio management strategies and improve their ESG performance metrics. The unified data access, consistent JSON schema, and trusted data providers make the Energy API the fastest path from zero to production energy data.

Ready to take your energy data management to the next level? Try Energy API for free today and unlock the potential of real-time energy market insights!