A prototype software tool integrating knowledge-base and database appr
oaches is developed to solve lighting-retrofit problems for energy con
servation and management purposes. Founded on the types of problems an
d the conceptual differences between conventional programming and know
ledge-based expert systems, it is felt that a system which combines bo
th approaches is best for solving Lighting-retrofit problems. The arch
itecture of the system is built on the concept of knowledge-based expe
rt systems and its links to a database. A commercially available knowl
edge-engineering tool and a dBase III-compatible compiler are used for
system development. Improvements necessary to upgrade the current res
earch system into a deliverable tool are suggested.