Yarrow is a Principal in the Solar Structures Group at CPP Wind Engineering, focusing on the effects of the wind on solar structures. He has been in the field of wind effects on structures since 2005, with significant experience consulting on wind loads on ground-mounted and roof-mounted solar structures, wind issues related to tall buildings (structural dynamics, cladding pressures, door operability, and pedestrian comfort), and more unique situations such as wind loads on air-supported radomes and launch vehicles (prelaunch, on the launch pad).