Unlocking the Power of Decentralized Energy: How Energy API Enables Microgrid Development

As the world shifts towards sustainable energy solutions, the need for reliable and accessible energy market data has never been more critical. Developers, data engineers, energy traders, and sustainability teams face significant challenges when trying to aggregate and analyze energy data from various sources. The traditional methods of scraping government portals or stitching together incompatible formats can be time-consuming and error-prone. This is where Energy API comes into play, providing a unified REST API that aggregates wholesale energy market data into a single, normalized JSON interface.

In this blog post, we will explore how Energy API can empower developers to build innovative solutions in the energy sector, particularly in the context of microgrid development. We will discuss the unique features of Energy API, provide a quick start guide, delve into core endpoints, and present real-world use cases that demonstrate the API's capabilities.

Why Energy API?

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

Unified Data Source: Energy API aggregates data from multiple trusted sources such as OMIE, ENTSO-E, EIA, and ESIOS, each with different formats and schedules. This eliminates the need for developers to manage multiple data feeds, saving time and reducing complexity.
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. Developers can access a wide range of data points without needing to switch between different APIs.
Rapid Development: The API's consistent JSON schema allows developers to ship features in hours rather than weeks. This accelerates the development cycle and enables teams to respond quickly to market changes.
Real-Time Data: Energy API offers intraday electricity curves and real-time updates, ensuring that developers have access to the most current market data for their applications.

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 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 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. Here are four core endpoints relevant to energy market analysis:

1. GET /latest

This endpoint retrieves the most recent price for one or more symbols.

Key Params: symbols (required), base (optional), category (optional)

Example cURL request:

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"

Example 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 explained:

rates: Contains the latest prices for the requested symbols.
currencies: Indicates the currency for each rate.

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)

Example cURL request:

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"

Example 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"
}
}

Key fields explained:

date: The date for which the historical prices are retrieved.
rates: Contains the historical prices for the requested symbols.

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)

Example cURL request:

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"

Example 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"
}
}

Key fields explained:

start_date: The start date for the time series data.
end_date: The end date for the time series data.
rates: Contains historical prices keyed by date for each symbol.

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)

Example cURL request:

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"

Example JSON response:

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

Key fields explained:

start_value: The price at the beginning of the period.
end_value: The price at the end of the period.
change: The absolute change in price.
change_pct: The percentage change in price.

Real-World Use Cases

Energy API can be leveraged in various innovative ways. Here are three concrete examples:

Price Alert System: Developers can create a price alert system that notifies users when energy prices reach a certain threshold. By using the /latest endpoint, they can monitor real-time prices and trigger alerts based on user-defined criteria.
ESG Dashboard: Sustainability teams can build dashboards that visualize carbon intensity and emissions data. By utilizing the /carbon-intensity and /emissions/latest endpoints, they can track progress towards sustainability goals and report on ESG metrics.
Cost Calculator: Utilities can develop cost calculators that estimate monthly energy expenses based on usage patterns. By using the /cost-estimate endpoint, they can provide users with accurate estimates based on 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. Developers can use the /latest endpoint to retrieve the most current price at any time.

Can I get historical energy prices going back 5 years?

Yes, Energy API provides historical data for various symbols. Developers can use the /historical and /timeseries endpoints to access historical prices, with data available for multiple years.

Does the API support multiple currencies?

Absolutely! Energy API supports multiple currencies across different commodities. Developers can specify the base currency in their requests to receive prices in their preferred currency.

Conclusion

In conclusion, Energy API is a powerful tool for developers looking to harness the potential of decentralized energy solutions. By providing a unified, normalized interface for accessing wholesale energy market data, it eliminates the complexities associated with traditional data aggregation methods. Whether you are building a price alert system, an ESG dashboard, or a cost calculator, Energy API offers the flexibility and reliability needed to bring your projects to life.

Don't let the challenges of energy data hold you back. Try Energy API for free today and unlock the power of decentralized energy for your applications!