Grid Parity is considered a milestone in the Photovoltaic industry, because it is the point in time that solar energy becomes cheaper than traditional energy. The term has often been used to describe the progress of the solar industry, and spur investment. One problem with "Grid Parity" however, is that the term can take on a variety of meanings, and can be calculated in numerous ways. Using a series of mathematical models it is shown empirically that the term "Grid Parity" is incapable of being precise without a detailed description of variables. These variables will be named and detailed for the state of Oregon, and suggestions will be made for reducing the time to "Grid Parity" of Photovoltaic system in the state.