Investment Grade Audit and LED Lighting Conversion for the City of Tucson

Evari’s real-time installation progress webmap complete with a custom solution tracing lighting assets back to their respective meters.

Evari’s real-time installation progress webmap complete with a custom solution tracing lighting assets back to their respective meters.

  • Client: City of Tucson

  • Prime: Ameresco, Inc.

  • Timeline: 1 year

Evari GIS Consulting completed data reconciliation, field audit, and innovative design of over 20,000 street light conversions across the City of Tucson, Arizona.

The data collection and analysis resulted in a guaranteed energy savings of $180,000/month in electrical costs to the city while also reducing the overall lumens by 62%. Evari GIS Consulting worked closely with Ameresco’s energy engineers to calculate replacement fixtures based upon road type (intersection or road segment), model, type, wattage of the existing fixture, roadway classification, lane numeration, light layout (staggered, opposite, median mounted or on one side of the road), average pole spacing, and whether the light fixture was over a median or right turn lane. Once the field audit, baseline energy calculations, and guaranteed energy savings calculations were completed, Evari provided an installation support system and as-needed on-call support throughout the installation, in addition to providing final data products.

This project also included an aggressive energy efficiency and dark skies compliance priorities. This project is ongoing, although the majority of Evari’s project responsibilities have been completed.

Obstacles Overcame: Not one-to-one proposed fixture, field auditing in extreme heat, additional data collection and design work and auditing vast areas without streetlights.

Screenshot from Tucson Read-Only Webmap

Screenshot from Tucson Read-Only Webmap