According to CryptoSlate, citing a forecast released by the UK's National Energy System Operator (NESO) on November 12, transmission thermal constraint costs for 2027 are projected to reach approximately £4 billion, driven by factors such as natural gas prices and grid availability. This figure does not represent the total electricity balancing costs. The report further cites NESO data showing that thermal constraint costs for the 2025/26 financial year are estimated at around £2 billion, with roughly 75% of this amount used to procure replacement power in other regions. The aforementioned historical cost structure cannot be directly applied to the 2027 forecast.