This report documents the technical progress in the four investigations which maAe up the project "Support of Research Projects for Electrical Energy Systems", Department of Energy Task Order Number 137 , funded by the U.S. Department of Energy and performed by the Electricity Division of the National Institute of Standards and Technology (NIST). The Erst investigation is concerned with the measurement of magnetic fields in support of epidemiogical and in vitro studies of biological field effects. NIST cohosted a workshop on exposure and biological parameters that should be considered during in vitro studies with extremely low frequency (ELF) magnetic and electric fields. Additionally, equations were developed to predict the magnetic field in a pajaUel plate magnetic field exposure system. An IEEE standard prepared at 1^' R ,bA. 4>': i*7»*'^g(ixi^*,t >.!• •• 'S^P?^^5^kk^^'•^-J'ii^it^'H-, # .