Investment return may be defined as a recital gauge through which profitability of an investment is evaluated. It helps to assess the effectiveness of dissimilar investments at a particular point of time. Hence, return on investment is an attempt to straightforwardly compute the income of a fastidious investment with respect to its investment cost. The CPSEs in India were set up to serve the extensive macro-economic objectives of fiscal augmentation, independence in manufacturing, surfeit equilibrium of payments, and managing the inflationary and deflationary situations. In the backdrop of our earlier research published in IJSSP, USA, vol. 10, no. 10, 2022, the present study is an attempt to assess the behavior of investment returns with a view to assess their impact in the disinvestment environment with reference to power industry in Indian CPSEs during 2010-11 to 2019-20. On the whole, both the industries (ie, power generation industry and power transmission industry) have generated optimistic earnings on their investment in all the years under cram. Thus, power industry notably drives the Indian economy. Though mean investment earnings of power generation industry have decreased marginally, there has been enhancement in mean investment earnings of power transmission industry in vocabulary of ROCE and ROE. For further enhancement in investment returns of power industry, steps should be taken to ensure best likely use of installed capacity, minimization of interest cost and effectual utilization of inner resources produced by the power industry. The study is based on secondary statistics at aggregate level. Besides, the study considered only accounting based measures of investment returns. Hence, future research may be carried out at micro level ie, at company-wise level within each power industry in Indian CPSEs.