Spot gold was flat at $1,829.14 per ounce by 0048 GMT, but gained 1.2% so far this week.
U.S. gold futures edged up 0.1% to $1,830.30.
Powell faced sharp questions about inflation and banking regulation in a hearing before the Senate Banking Committee on Thursday, and repeated his pledge of “powerful support” to complete the U.S. economic recovery.
Large stimulus measures tend to support gold, which is often considered a hedge against inflation and currency debasement.
The Federal Reserve will shutter its asset purchases programme by end-2022, according to a Reuters poll, with a few more economists now predicting a rate hike as early as next year, but they pegged new COVID-19 variants as the biggest economic risk.
Economy in China, a leading consumer of gold, grew slightly more slowly than expected in the second quarter, weighed down by higher raw material costs and new COVID-19 outbreaks, fanning expectations that policymakers may have to do more to support the recovery.
Barrick Gold Corp said on Thursday its second-quarter gold production fell 5.4% from the previous quarter, dented by planned maintenance shutdowns at Nevada Gold Mine in U.S. and Pueblo Viejo in the Dominican Republic.
Silver was flat at $26.32 per ounce, palladium rose 0.1% to $2,731.96, and platinum dipped 0.1% to $1,136.94.
