This study aims to describe the effect of work environment and organizational culture on the performance of employee through work motivation as an intervening variable at PT Manggala Energi^*). The method in this study is qualitative method that are quantified. Population of 50 respondents and a saturated sample of 50 respondents. The data analysis method used is SEM (Structural Equation Modeling) with the application SmartPLS 3 students version. The result of this study indicate that there is an effect of work environment on employee performance with a coefficient of 0.64. There is an effect of work environment on work motivation with acoefficient of 1.14. there is an effect of organizational culture on employee performance with a coefficient of 0.50. there is an effect of organizational culture on work motivation with a coefficient of -0.70. There is an effect of work motivation on employee performance with a coefficient -0.29. Work environment and organizational culture can explain work motivation with a determination value of 0.67. Work Environment, Organizational Culture, and Work Motivation can explain Employee Performance with a determination value of 0,96.