In contrast to more affluent areas of Oakland or nearby Berkeley, rooftop solar installations are uncommon among East and West Oakland flatland residents. This isn’t surprising, considering that the median income in one heavily polluted corridor in the Hegenberger area is under $33,000 annually. Vien Truong, environmental equity director for the Berkeley-based Greenlining Institute, which advocates for communities of color, says that “solar financing is out of reach” for low-income households.