BPI Building Perfornnce Institute


Entry Level Certificate of Knowledge

New York Solar Energy Society

sharp solar electricity

Solar Certified Installer

conergy pv system design and installation
PV System Design and Installation Certified * Solar Water Pumping Solutions Certified

American SOlar Energy Society

fronius inverter design and installation
Inverter Design and Installation qualified

new york city contractor
Licensed Contractor

license #1218929

Efficiency First


Home Performance

dsire usa

Solar Energy Systems Turn Sunlight into Electricity.

Solar Energy System (c) The Energy Grid 2008

In this simple illustration, electricity is produced in 'Direct Current' (DC) form by photovoltaic Solar Panels. This energy is then converted to grid-compatible "Alternating Current" (AC) by an Inverter. Once converted, the electricity can be used to power household appliances or be sent back through the electric meter into the grid.


Drum River Consultants • 1707 Dean Street, Brooklyn, NY 11213 • audits@drumriver.com • 718-744-5727