The Environmental Information and Planning Model (RIM+) has been developed by the Laboratory for Waste Materials and Emissions at the National Institute of Public Health and the Environment. RIM+ is an instrument both for maintaining data on emissions, energy use and waste production and using these data for calculations. It consists of a database surrounded by different modules for the calculation and maintenance of data. Possibilities briefly listed: (1) Maintenance of processes: base level ; emission-, waste and energy factors ; process location. (2) Maintenance of measures: introduction year, introduction grade, etc. ; emission and/or waste and/or energy effects ; costs of measure. (3) Maintenance of series for all processes for calculating future process levels. (4) Calculation of policy alternatives, this being a combination of measures and series for all chemical compounds, energy carriers and waste components. Calculations can be made for: emissions, energy use, waste production, costs of measures, gross and net discharges to water. (5) Many overviews such as reports, map presentations or graphs are possible. Results are presented per policy theme, target group or other classifications. (6) RIM+ is also used to maintain international data in EUREM (European emissions) and EDGAR (global emissions). (7) RIM+ is a flexible model. Users themselves are able to determine which processes, compounds, locations and scenarios to distinguish. Some chapters can be regarded as a user's guide: others are more descriptive. Because the user interface of RIM+ is English, so is this report. Officially RIM+ was used for the first time in 1995 to calculate emissions for some important RIVM publications. Cost calculations for The Netherlands are also performed with RIM+. This use of RIM+ will be extended in the future possibly with some regional calculations.