The Short Version
The claim is not supported by Isle of Man pricing evidence. Official Manx Utilities tariffs show consumers paying about 29.1–29.5p/kWh in 2024–2025, far above 6–7p/kWh. No authoritative source provided shows that a 1.5p/kWh production price on the Isle of Man translates into a 6–7p/kWh consumer price, and the stated arithmetic does not match either generic cost-stack models or the island’s real tariff structure.