Abstract This paper descibes an approach to the problem of evaluation in the public sector. The schema, called technology scanning, was developed during 1968 to create a research and development priority program for the State of Connecticut. In late 1969, a second major application was initiated in the Cohoes, New York, Model Cities program. The basis of technology scanning is a grid on which the problems or system's goals are arrayed against the solutions. The socio-economic importance of the goals and the effectiveness of the solutions in meeting these goals are rated by panels made up of the system's members ranging from technical experts to concerned citizens. The grid is then solved to produce a list of the most important solutions. These solutions are later evaluated against their projected contribution as described in the grid. The process may be repeated cyclically to allow programs to be replanned on an annual basis.