Many developing and developed countries alike are striving to attract foreign direct investment because of its impact on economic development, transferring expertise, and development of mechanisms for the business models of the host economy. This research drives at studying foreign investments by analyzing their inflows and their relative importance to Egypt; identifying as well, the reasons that prevent outmost and optimal benefit by drawing on the experiments of some countries. The research also aims to examine foreign direct investment in the field of clean energy in Egypt, to study the patterns of joint cooperation between foreign investments and the various ministries and agencies in the energy field; studying as well, the obstacles that prevent some of the memorandums of understanding signed with foreign companies from being implemented. The practical side of the study is explained through the applied study by analyzing the data issued by the Ministry of Planning and Economic Development using descriptive statistical and inductive measures to test the relationship between the study variables. The results of the study showed through statistical analysis when testing the hypotheses that there is a positive significant effect between foreign direct investment and the real economic growth rate, and that it contributes to development but in a small amount due to the nature of these investments and their sectoral distribution. There is a positive non-significant impact between foreign direct investment and total exports and imports as a percentage of the gross domestic product. Its impact is negligible and poor, given that the majority of it flows into the petroleum sector. There is also a positive significant impact between foreign direct investment and total human capital as a percentage of the gross domestic product in a small percentage given that the majority of foreign investments do not require large labor. There is a negative significant effect between foreign direct investment of the inflation rate due to its sector distribution which is mostly focused in the petroleum sector and between tourism and real estate.