IRiESD, or the Distribution Grid Operation and Maintenance Manual, is a fundamental document for all electricity market participants who use the distribution network. Developed and published by Distribution System Operators (DSOs), it outlines the detailed rules, procedures, and both technical and formal conditions governing the use of the grid infrastructure.
The IRiESD precisely defines the rights and obligations of entities connected to the distribution grid, including energy consumers, producers (such as photovoltaic installation owners), energy trading companies, and the operators themselves. Among other things, the document sets out requirements for grid connection, technical parameters of installations, communication standards between parties, and procedures to be followed in the event of disturbances or changes in energy delivery.
A particular focus is given to scenarios involving the discontinuation or failure to initiate electricity supply by a selected energy supplier. The IRiESD specifies emergency procedures and mechanisms that ensure continuity of energy supply, thereby protecting the interests of end users. Another important aspect is the rules of commercial balancing – the settlement of actual energy consumption and production against forecasted volumes.
In light of the growing number of prosumers – particularly businesses operating renewable energy installations – the IRiESD plays an increasingly significant role. According to the Renewable Energy Sources Act (RES Act), owners of photovoltaic micro-installations may sell surplus energy back to the grid. However, doing so requires signing a Power Purchase Agreement (PPA) with a selected energy trading company. This agreement specifies the price, sales terms, energy delivery schedules, and the designation of the Balancing Responsible Party (BRP), who will be accountable for energy balancing on the market.
Understanding and applying the provisions of the IRiESD is not only a formal requirement, but also a practical tool to ensure technical safety and the smooth functioning of the energy market. For this reason, it is essential that all participants in the process – from professional operators to small-scale producers – are familiar with and comply with the rules set out in this manual.
