Where I live (Poland) it's possible to opt for cheaper electricity at night (10PM - 6AM), and over the weekends (Friday 10PM - Monday 6AM), in exchange for prem

Where I live (Poland) it's possible to opt for cheaper electricity at night (10PM - 6AM), and over the weekends (Friday 10PM - Monday 6AM), in exchange for premium pricing during peak hours. Example prices (probably a bit outdated, but to illustrate the difference): Flat rate metering: 0.55PLN / kWh, split metering: 0.71PLN / kWh peak, 0.26PLN / kWh night & weekends.