Electricity markets

What types of electricity markets are there?

Forward/futures market (long-term contracts)

Day-ahead market (trading for the next day)

Intraday market (trading on the same day)

Balancing markets (for grid stability)

Imbalance market (correction afterwards). Each market has its own dynamics and price formation.

What is the difference between the day-ahead and intraday market? On the day-ahead market, electricity volumes and prices are determined one day in advance, per hour. The intraday market offers flexibility up to just before delivery, with trading per quarter or half hour. The intraday market is therefore more dynamic and is mainly used for adjustments and optimisation.

How are electricity prices determined? Prices are set by supply and demand. On the day-ahead market this happens via an auction mechanism on EPEX Spot. On the intraday market via continuous trading. Factors such as weather forecasts, fuel prices and grid congestion strongly influence prices.

What are negative electricity prices and how do they arise? Negative prices occur with oversupply (e.g. lots of sun/wind and low demand) and insufficient off-take options. Producers then pay to deliver. Batteries and flexible users can benefit by charging cheaply or consuming extra.

What is the role of interconnections in the electricity market? Interconnections are cross-border connections that import/export electricity. They increase market integration and improve grid reliability. For the Netherlands, connections with Germany, Belgium and Norway are crucial for price and supply security.

How do weather conditions affect electricity prices? Sun and wind determine the amount of renewable generation. With lots of wind or sun, prices fall (sometimes negative), with little they rise. Temperature also affects demand (heating/cooling). Good weather forecasts are therefore essential for price strategies.

How can I as a company make use of market fluctuations? By smart purchasing or adjusting your consumption/production to price peaks or dips. For example, charging at low prices and discharging or feeding in at high prices. This requires an energy management system and market access (direct or via aggregator).

What are block bids and how do I use them in the day-ahead market? Block bids are bids that are only accepted if the entire block is matched. Useful for processes that are only profitable with full deployment (e.g. running 6 hours continuously). It requires strategic pricing and insight into market patterns.

How do I develop a trading strategy on the electricity market? Analyse your load profile, flexibility, price history and weather data. Choose the markets you want to trade on and use software to automate bids. Combine day-ahead optimisation with intraday adjustments and imbalance strategies. Work with a BRP or aggregator if you have no direct market access.

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