Crafting a complaint letter for electricity power cut requires a balance of clarity and professionalism. Begin with a polite greeting, followed by a concise description of the issue, including dates and durations of outages. Clearly state the inconvenience caused and any resulting damages. Request prompt action to rectify the situation and prevent future occurrences. Close with appreciation for attention to the matter. Keep the tone formal yet assertive to convey the urgency of the situation.