City of Orlando Code Enforcement and Permitting

Overview

The City of Orlando is committed to being greenhouse gas neutral by 2030, resulting in aggressive efforts to minimize energy use. Developed as a design/build project, this single-story complex provides city permitting field inspection personnel with work and meeting spaces (8,212 sf), as well as an archives record warehouse (15,000 sf). TLC collaborated with the City to focus on reducing the initial building energy demand and augmenting / offsetting energy consumption with renewable energy systems. TLC modeled the building envelope, HVAC, electrical and PV systems to evaluate energy conservation measures (ECMs) with a focus on life cycle cost effective design solutions. When submitted for LEED certification, the building scored 18/18 for Optimized Energy Performance.

Features

The complex includes a roof-mounted 113.6 kWdc photovoltaic (PV) solar array consisting of 320 panels. PV metering and sensors link to a web-based interface and in the first three years of operation, the array generated 414 MWh of electricity. Data collected over 12 months confirms that the facility used 50,110 kWh of electricity, while the PV array produced 63,820 kWh of electricity, achieving the target of annual net-zero electricity operation. The solar-generated power is equivalent to saving 248 tons of CO2 emissions. The building energy saving features include:

• High efficiency LED lighting in conjunction with intelligent lighting controls resulting in a calculated reduction of 8.2% from the LEED v4 baseline
• High efficiency LED exterior lighting and optimal exterior lighting strategies in conjunction with photocell and astronomical time clock controls resulting in a calculated reduction of 74% from the LEED v4 baseline
• High Efficiency VAV DX Rooftop Units (14.7 IEER) resulting in cooling savings of 14% and associated fan energy savings of 11.7%
• The use of climate appropriate tilt wall and R-30 roof envelope system providing a cost effective and properly insulated exterior construction
• The use of low-e 0.27 SHGC glazing to reduce direct solar heat gain