Creekside Community High School is a 17,830 sf building located in Tigard, OR, which is a suburb of Portland. The building operates on a typical high school schedule with mostly full occupancy from approximately 8am-5pm from September 14th to June 16th, and reduced usage in the summer months. The building also has very limited use during the week of Thanksgiving and the Winter holiday break. Main spaces include typical classrooms, a computer classroom, a science lab, a workshop/maker space, and learning/demonstration kitchen. The workshop/maker space and computer classrooms have relatively large process loads and have seen higher than expected use so far.

The school is part of the Tigard-Tualatin School district. The building completed construction in June 2019 and tracking for Net Zero Energy started in July 2019. The building’s design includes energy efficient systems and a 120 kW roof mounted solar array. There is no gas usage or combustion of any kind at the building. The building features advanced energy metering systems to record total building energy usage and solar array production.

Estimated Savings

Solar electric PV inverter with a 120 kW renewable capacity. Daylight controls, daylighting, LED lights, and occupancy sensors.

HVAC equipment includes energy recovery ventilators (ERVs), and variable refrigerant flow (VRF) condensing units which serve fan coils. The ERVs provide ventilation air. Domestic hot water is provided by an electric resistance hot water heater. The building has a roof mounted 120kW PV array.

◆ Actual energy use during performance period: 98,287 kWh

◆ Actual energy produced during performance period: 144,648 kWh

◆ Net Energy Use: -46,361 kWh