Research InterestEuropean and US have deregulated markets designs which are commonly used as a model for other countries electricity markets. Further developments of existing markets remain an open question, since factors that affect the market operation are specific for different countries. These factors, such as fuel availability, economic sustainability of the country and environmental and energy policies, have strong impact on decision making of regulatory institutions. With growth of energy efficiency issues and environmental agenda, many innovative solutions (smart-grid, renewable energy) take place in the modern power industry. Their integration in the market often is a problem to solve, in addition to existing. The main objective is analysis of how independent generation or innovation can enter into existing and operating market, which has specific drawbacks and incentives. The methodology to assess the acceptability of solutions to implement the certain innovation should be discovered as a result. This result is relevant, from academic approach, to understand how to implement something new in formed operating market and also, from business approach, to evaluate competitiveness of different business related solutions.