The achievement of a safe level of financial security of an enterprise in a static and dynamic dimension is provided by the financial equilibrium tool of the enterprise, which is based on balancing the indicators of profitability of sold products, efficiency of asset utilization, improving the cost structure and maximizing the cost of the enterprise. For this purpose, we suggest using the model of sustainable growth of enterprises, which enables estimation and forecasting of indicators that influence the forecast of income growth from sales of products of the enterprise. The results of the analysis of the application of the sustainable growth model at the Western power industry companies revealed their significant dependence on the fluctuations in sales volumes, the turnover of net assets, the factor of the financial leverage and the reinvestment factor. The deepening of analytical research in the direction of identifying the main factors of influence on the economic growth of the enterprise emphasized the importance of the relationship of indicators of sales profitability, efficiency of asset utilization, optimization of cost structure, and maximizing the cost of the enterprise. The determining factor was the simultaneous achievement of many financial indicators, namely: high growth rates of turnover of current assets of the enterprise; high profitability of sales, profitability of net assets, return on equity; acceptable leverage of the financial leverage; economic growth of the enterprise and its high cost. In the proposed model of sustainable growth of indicators it is expedient to introduce a ratio of net assets, which characterizes the efficiency of using own and attracted capital. This model will allow assessing the relationship between the operating and financial activities of the enterprise, to determine the equilibrium between the growth of sales volume due to the growth of domestic sources and the efficiency of asset utilization, optimization of enterprise costs, as well as between the policy of payment of profits and financial policies. The estimation of the activity of electric power enterprises on the model of economic growth allowed revealing the influence of factors on the results of factor analysis of the economic growth factor and to substantiate the main managerial decisions. The application of simplified financial modeling to achieve the level of growth in the enterprise enables predicting the financial parameters of a particular strategic scenario and balancing the goals of the enterprise, namely optimizing the structure of costs (reducing fixed costs, controlling costs, synergistic approach of activities, scale effect), and using assets more effectively (reducing the need for working capital, lower capital intensity, synergy with regard to the use of non-current assets).