Using a wide range of policy variables to represent the policy being evaluated, REMâ€™s explicit model structure helps the user interpret the forecasted economic and demographic effects. The model can be calibrated to any sub-national area for policy analysis and forecasting, and is available in single- and multi-area configurations. Each calibrated area (or region) has economic and demographic variables to test the effects of any policy on a local economy.

Model simulations estimate comprehensive economic and demographic effects in wide-ranging initiatives, such as: economic impact analysis; policies and programs for economic development, infrastructure, environment, energy and natural resources.

PI^{+} is used by government agencies (including most U.S. state governments), consulting firms, nonprofit institutions, universities, and public utilities. Articles about the model equations and research findings have been published in professional national journals, including the American Economic Review, The Review of Economic Statistics, the Journal of Regional Science, and the International Regional Science Review.

**Ernst & Young**

**National Education Association**

**North Carolina Department of Commerce**

**Sandia National Laboratories**

**South Coast Air Quality Management District**

**Tennessee Valley Authority**

**Texas Comptroller**

**University of Michigan**

**Wyoming Department of Administration & Information**

PI^{+} VERSION 2.5

**Data Sources and Estimation Procedures
Major Changes
Model Equations
PI**

**Calculating Multipliers with the REMI Model
Data Sources and Estimation Procedures
Income Distribution
Major Changes
Model Equations
PI**

**Beta and Sigma Estimation Methodology**

**Calculating Multipliers with the REMI Model**

**Data Sources and Estimation Procedures**

**Income Distribution**

**Model Changes**

**Model Equations**

**PI ^{+} User’s Guide**

**Industries – Hierarchical v2.2**

**Industry Comparison – Sector**

**Industry Comparison – Hierarchical**

**Demographic Component v2.2**

**PI ^{+} Changes v2.2**

**Consumption Categories – Hierarchical v2.1**

**Data Sources and Estimation Procedures v2.1**

**Demographic Component v2.1**

**Economic Migration Equation Estimation v2.1**

**Estimated Labor Force Participation Rates Elasticities v2.1**

**Income Distribution v2.1**

**Industries – Hierarchical v2.1**

**Model Equations v2.1**

**Occupations – Hierarchical v2.1**

**PI ^{+} Changes v2.1**