Enhancing Renewable Energy Production Forecasts: A Developer's Guide with Energy API

Introduction

As the world increasingly shifts towards renewable energy sources, accurate forecasting of energy production becomes paramount. Energy traders, utilities, and sustainability teams face significant challenges in obtaining reliable market data from disparate sources, often requiring extensive manual effort to scrape government portals or stitch together incompatible formats. This blog post aims to address these challenges by introducing a powerful solution: the Energy API.

The Energy API aggregates wholesale energy market data from trusted sources such as OMIE, ENTSO-E, ESIOS, EIA/FRED, and Ember, normalizing everything into a unified JSON interface. By leveraging this API, developers can streamline their data acquisition processes, enhance their forecasting models, and ultimately make more informed decisions in the energy market.

Why Energy API

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

• One Unified Interface: Instead of dealing with multiple APIs, each with different formats and schedules, the Energy API provides a single REST surface that simplifies data access. This means developers can focus on building applications rather than managing data integration.
• Comprehensive Data Coverage: With over 39 symbols across six commodity categories—electricity, gas, oil, coal, carbon, and carbon intensity—developers can access a wide range of market data in one place. This eliminates the need for multiple API calls and reduces the complexity of data handling.
• Rapid Development: The Energy API's consistent JSON schema allows developers to ship features in hours, not weeks. This rapid development cycle is crucial for teams looking to stay competitive in the fast-paced energy market.
• Trusted Data Providers: The API aggregates data from reputable sources, ensuring that users receive accurate and timely information. This reliability is essential for making informed trading and investment decisions.

Quick Start

Getting started with the Energy API is straightforward. The base URL for all API requests 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.
• 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

To enhance your renewable energy production forecasts, here are some core endpoints that you will find particularly useful:

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"

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: The rates object provides the latest prices for each requested symbol, allowing developers to quickly access current market conditions.

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"

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: This response allows users to analyze historical price trends, which is crucial for forecasting future energy production and pricing.

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"

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: The rates object contains historical prices keyed by date, allowing developers to visualize trends over time.

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=2025-01-31" \
--data-urlencode "symbols=BRENT_CRUDE" \
--data-urlencode "api_key=YOUR_API_KEY"

JSON Response:

{
"success": true,
"fluctuation": {
"BRENT_CRUDE": {
"start_value": 76.30,
"end_value": 75.90,
"change": -0.40,
"change_pct": -0.52
}
}
}

Field Explanation: This response provides insights into price volatility, which is essential for risk management and trading strategies.

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

With the growing emphasis on sustainability, developers can build an ESG dashboard that visualizes carbon intensity and emissions data. By querying the /carbon-intensity and /emissions/latest endpoints, users can track their carbon footprint and make informed decisions about energy consumption.

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 provide users with a simple interface to input their expected 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 trading and forecasting needs.

Can I get historical energy prices going back 5 years?

Yes, the Energy API allows users to access historical prices for various symbols, enabling analysis of price trends over extended periods. This is particularly useful for forecasting and strategic planning.

Does the API support multiple currencies?

Absolutely! The Energy API supports multiple currencies, allowing users to specify their preferred currency for price data. This flexibility is essential for international trading and investment strategies.

Conclusion

In conclusion, the Energy API offers a robust solution for developers seeking reliable and comprehensive energy market data. By aggregating data from trusted sources and providing a unified interface, the API simplifies the process of accessing critical information needed for effective forecasting and decision-making.

Whether you are building a price alert system, an ESG dashboard, or a cost calculator, the Energy API provides the tools necessary to enhance your applications and drive value in the energy market. Don't miss out on the opportunity to streamline your data acquisition process—try Energy API for free today and unlock the potential of accurate energy forecasts!