Keyword: «marginal profit.»

This article examines a mathematical model of the components of the electricity price. Its objective is defined as minimizing the overall cost. A hypothetical calculation of the electricity cost is presented for a region with diverse generation, such as the Rostov Region, home to the Rostov Nuclear Power Plant, Novocherkassk State District Power Plant, combined heat and power plants, and wind farms. The authors base this calculation on an assessment of the specific production costs of different types of power plants. The article also presents calculations of the cost of electricity production for coal, gas, and renewable energy sources.