Responsibilities of the position include but are not limited to:  Investigate and analyze filings by electric utilities regarding long-range energy sales and peak demand econometric and end-use forecasts.     Investigate utilities (integrated resource plan) IRP filings that includes a review of the inputs and optimized results using linear programing and computer simulations that underlie the combination of least cost resources with IRP models.     Review similar models that calculate the marginal costs to produce energy and capacity for avoided costs.     Review cost-benefit analysis in a variety of utility applications.  Such investigations may involve the development of independent load forecasts, IRP models, and energy production models.