Business Context

To describe the business context, the figure below shows the context diagram of the EDDIE system and its environment. The system within scope, i.e., the EDDIE system, is in a circle at the center, while the neighboring entities are shown as squares and actors around it.

The table below shows a description of all the entities of the context diagram.

Entity	Description
EDDIE System	This is the software system within scope. The EDDIE system aims to offer energy-related data to services that are provided by the eligible party. Furthermore, the EDDIE system is envisioned to be comliant with interoperability initiatives, for e.g. Gaia-X, to allow for interoperability with external energy data spaces, i.e., similar software systems for sharing energy data.
Service	A service is a software application that is provided by the eligible party. Services access energy data from the EDDIE system and use this data to generate value, e.g., using data analysis techniques based on statistics and artificial intelligence.
Eligible Party	The eligible party is a person (or organization) that operates within the energy data services market. The eligible party provides services and uses the EDDIE system so that these services have access to energy data from customers.
Customer	The customer is a natural or legal person that consumes/produces energy, and is willing to share their energy consumption/production data. This data is used as input to the services. The customer can be motivated to allow their data to be used as the input for the services by gaining access to the output of the services. For example, a service may be processing residential energy consumption values to estimate consumption recommendations that reduce the energy bill as output.
EP Website	The EP Website (Eligible Party Website) is a website offered by the eligible party as an interface for the customers. This website presents the EDDIE Popup to the customer, which gathers all the necessary information to access their energy data. The EDDIE Popup is a user interface component provided by the EDDIE Framework that securely collects the customer permission and relevant details, enabling the retrieval of energy data from in-house metering devices and/or Regional Data-sharing Infrastructures.
Metering Device	This is an in-house device that can access energy-related data, e.g., a smart meter that provides access to near real-time energy consumption information.
Regional Data-sharing Infrastructure	This is the energy data sharing system of the customer's country, that provides access to the historical data (e.g., historical validated consumption metering data) of the customer.
External Energy Data Space	This is a software system similar to the EDDIE system that facilitates energy data sharing. The EDDIE system is expected to be compatible with external energy data spaces so that energy data can also be exchanged between different energy data spaces.
Gaia-X	The Gaia-X system offers compliance services and defines rules for achieving interoperability and trust among data spaces. As long as two data spaces utilize Gaia-X, a certain degree of interoperability can be achieved.

Notably, the figure above shows the general case whereby one eligible party uses one instance of the EDDIE system to provide many services to many customers, while accessing their data from many, potentially different, metering devices and Regional Data-sharing Infrastructures across Europe. Similarly, many eligible parties can replicate this environment, serving numerous customers.

Technical Context

The figure below shows a context diagram with the environment of the EDDIE System according to the C4 model. This diagram depicts the entities within scope with blue color, while the gray color indicates entities whose implementation is out of scope. As shown in the figure, the EDDIE system, being a system of systems, consists of three systems: the EDDIE Framework, AIIDA, and the Marketplace.

The table below shows a description of all the entities.

System	Description
EP Website	The EP Website present to the customer the EDDIE Popup to collect the necessary customer information for accessing the customer's energy data. The EDDIE Popup is provided by the EDDIE Framework, but it is displayed by the EP Website. This way, upon submission by the customer, the information of the EDDIE Popup is sent directly to the EDDIE Framework.
EDDIE Framework	The EDDIE Framework implements the main workflows related to acquiring the customer permission for data access, accessing energy data of customers, and sending this data to the services.
AIIDA	The Administration Interface for In-house Data Access (AIIDA) implements the main workflows regarding accessing near real-time data from in-house metering devices (e.g., smart meters), and sending it to the EDDIE Framework.
Marketplace	The Marketplace implements the main workflows enabling eligible parties to submit (and advertise) energy services, and allowing customers to search for energy services they want to use.
Metering Device	This is any in-house device providing energy information such as smart meters, home automation systems, electric vehicle chargers, photovoltaic systems, etc.
Regional Data-sharing Infrastructure	This is the system of a country utilized for sharing historical validated energy consumption data. This system may be operated by a different entity in each country, e.g., by a country-specific permission administrator, or a metered data administrator, among others.
Eligible Party	The eligible party uses the EDDIE Framework, AIIDA, and Marketplace to provide energy services to the customers.
Customer	The customer selects services from the Marketplace, and provides their permission so that these services can access the customer's energy data via the EDDIE Framework.
External Energy Data Space	This is an external Gaia-X compliant energy data space that can provide additional energy data to the EDDIE Framework and services, such as Omega-X or OneNet.
Gaia-X	Gaia-X provides compliance services for achieving interoperability and trust between data spaces.