Zarina E. Castro practices from her home office. Her home in Walden is off the grid, and relies primarily on photovoltaic power for all the electric office needs.

Zarina has an addition to her home that uses straw bale construction. Straw bale construction uses this renewable resource for insulation.

Zarina's office uses renewably sourced or recycled paper products. She also recycles all recyclable materials used in the office and in her home.

 photovoltaic power