capaciteitstransacties

Capaciteitstransacties, or capacity transactions, refer to agreements made by electricity generators and suppliers to secure a certain amount of production capacity for the purpose of meeting future demand and ensuring grid reliability. These transactions typically occur in wholesale electricity markets and are designed to address the mismatch between supply and demand, especially during peak periods or in times of low renewable output.

The mechanism works by allowing market participants to either sell or lease their capacity to other players. In return, they receive a capacity payment, which is separate from the retail electricity price. The payments compensate providers for maintaining their infrastructure, covering fixed and contribution costs, and guaranteeing availability when required. Capacity contracts are often long‑term, ranging from a few months to several years, and may include penalties for non‑performance.

Governments and regulatory bodies frequently oversee capacity markets to promote security of supply, encourage investment in new generation assets, and prevent market power abuse. In many European countries, capacity transactions complement ancillary services markets, ensuring that the grid remains stable. The Dutch Energy Authority, for instance, implements capacity auctions to secure sufficient generating resources for the national grid.

Capacity transactions are also relevant in renewable integration, as intermittent sources such as wind and solar may be supplemented by balancing reserves supplied through capacity agreements. These arrangements help maintain the resilience of the electricity system while providing clear economic signals for investment and operational planning.