Enhancing Demand Forecasting Models with Energy API: A Practical Guide for Developers

Introduction

In today's fast-paced energy market, accurate demand forecasting is crucial for businesses to optimize their operations and make informed decisions. However, developers often face significant challenges when trying to gather reliable market data. Traditional methods, such as scraping government portals or stitching together data from various sources, can be time-consuming and error-prone. This is where Energy API comes into play, offering a unified solution that aggregates wholesale energy market data from trusted sources.

This blog post aims to provide developers with a practical guide on how to enhance their demand forecasting models using the Energy API. We will explore the key features of the API, demonstrate how to get started, and discuss real-world use cases that highlight its value. By the end of this post, you will have a clear understanding of how to leverage the Energy API to streamline your data acquisition process and improve your forecasting accuracy.

Why Energy API

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

• Unified Data Format: The Energy API normalizes data from multiple sources, including OMIE, ENTSO-E, EIA, and ESIOS, into a single JSON interface. This eliminates the need for developers to handle different formats, schedules, and naming conventions, allowing them to focus on building their applications rather than data wrangling.
• Comprehensive Coverage: With over 39 symbols across six commodity categories—electricity, natural gas, crude oil, coal, carbon allowances, and grid carbon intensity—the Energy API provides a wealth of data that can be accessed through just 16 endpoints. This breadth of information enables developers to create robust applications that require diverse energy data.
• Rapid Development: The consistent JSON schema across all commodities means that developers can ship features in hours instead of weeks. This accelerates the development cycle and allows teams to respond quickly to market changes.
• Trusted Data Providers: The Energy API aggregates data from reputable sources, ensuring that the information is reliable and up-to-date. This trustworthiness is essential for businesses that rely on accurate data for decision-making.

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 are:

• success: Indicates whether the request was successful.
• date: The date of the data retrieved.
• base: The base currency used for the rates.
• rates: An object containing the latest prices for the requested symbols.
• dates: The dates corresponding to each symbol's price.
• currencies: The currency in which each symbol's price is quoted.

Core Endpoints

To effectively enhance your demand forecasting models, it’s essential to understand the core endpoints of the Energy API. Below are four key endpoints that are particularly relevant:

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 response includes the latest prices for the specified symbols, along with their corresponding currencies and the date of the data.

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 provides historical prices for the specified symbols, allowing developers to analyze trends over time.

3. GET /timeseries

This endpoint retrieves 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"

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 response includes daily prices for the specified symbols over the given date range, making it easy to visualize trends and fluctuations.

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"

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: This response provides insights into the price changes for the specified symbols, which can be crucial for understanding market dynamics.

Real-World Use Cases

Developers can leverage the Energy API to build a variety of applications that enhance demand forecasting and decision-making. Here are three concrete examples:

• Price Alert System: Developers can create a system that monitors price fluctuations for specific commodities. By using the /latest and /fluctuation endpoints, they can send alerts to users when prices exceed certain thresholds, enabling timely trading decisions.
• ESG Dashboard: With growing interest in sustainability, developers can build dashboards that track carbon intensity and emissions data. By utilizing the /carbon-intensity and /emissions/latest endpoints, teams can visualize their carbon footprint and make informed decisions to reduce it.
• Cost Calculator: A cost calculator can help businesses estimate their monthly energy expenses based on current prices. By using the /cost-estimate endpoint, developers can provide users with accurate estimates based on their energy consumption patterns.

FAQ

How often does the TTF gas price update?

The TTF gas price updates daily, reflecting the most recent market data available from the Energy API. This ensures that users have access to the latest pricing information for their analysis and decision-making.

Can I get historical energy prices going back 5 years?

Yes, the Energy API provides historical data for various symbols, allowing users to access prices going back several years. This data can be invaluable for trend analysis and forecasting.

Does the API support multiple currencies?

Absolutely! The Energy API supports multiple currencies for different commodities. 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 looking to enhance their demand forecasting models with reliable energy market data. By providing a unified interface that aggregates data from trusted sources, the API eliminates the complexities associated with traditional data acquisition methods. With its comprehensive coverage, rapid development capabilities, and trusted data providers, the Energy API is the fastest path from zero to production energy data.

We encourage you to explore the capabilities of the Energy API and see how it can transform your energy data needs. Try Energy API for free today and unlock the potential of accurate demand forecasting for your business.