Converting from mercury vapor to high-pressure sodium streetlighting is saving Pittsburgh, Pennsylvania, so much money that the energy cost savings are paying for the retrofit. The result of the conversion program is annual energy savings of 12 million kwh. The 5-year lease/purchase conversion project started in August 1987. It included providing a computer-generated inventory of all lighting in each of 27 sections, which is now completed. Printouts include information on pole spacing, road widths, mounting height and overhang, road classification, and old and new fixture types and wattages. The project was accomplished using the illumination level and average uniformity guidelines of the Illuminating Engineering Society of North America.

Media Info

  • Features: Photos;
  • Pagination: p. 56-57
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00485759
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 31 1989 12:00AM