Energy independence as the goal of EU energy policy encourages energy efficiency measures and renewable energy sources (RES) implementation. Photovoltaic (PV) plants represent the usual technical solution when reconstructing/maintaining a roof or as an investment that is expected to result with a material gain. The viability of the investment is unquestionable, but when the means of implementation are provided by an external institution, a cost-effectiveness analysis is necessary. When a financial institution has no experience with similar projects, the complete TELOS analysis is required. This paper provides a complete TELOS analysis (Technology Feasibility, Economic, Legal, Operational and Schedule Feasibility) of the PV power plant implementation.