Electricity prices in the Netherlands are expected to reach record highs tomorrow evening, exceeding 90 cents per kilowatt-hour, potentially surpassing 1 euro with taxes. This spike affects approximately one million households with dynamic energy contracts, requiring consumers to be mindful of their usage. The increase is attributed to a combination of high demand due to the ongoing heatwave and reduced supply from renewable sources like solar and wind power. Air conditioners are a significant contributor to the surge, consuming substantial energy, especially during peak evening hours. A shortage in neighboring Belgium, heavily reliant on nuclear energy, is also exacerbating the situation, with even higher price peaks anticipated there. Experts advise consumers to postpone using high-energy appliances until off-peak hours to mitigate costs. The price fluctuations are determined every quarter-hour based on supply and demand.