Grants.gov  http://www.grants.gov/web/grants/view-opportunity.html?oppId=291299

ARPA-E url to DE-FOA-0001737   https://arpa-e-foa.energy.gov/#FoaId2d3f7530-bdc3-4090-ae7c-0d5ca8584e07

There are four areas of focus for this program, as described further in this FOA:
A. Human presence sensors for residential use (these deliver a binary “occupied or not occupied” signal to enable temperature adjustment (setbacks) between setpoints used for the normal comfort range vs those for an unoccupied residence;
B. People counting sensors for commercial use (these deliver the number of occupants in a specific defined HVAC zone to enable both temperature and ventilation setbacks);
C. Low-cost, stable, and easily deployable CO2 sensors to enable adoption of ventilation setbacks;
D. Real-World testing and validation of A, B, and C in both laboratory controlled quasi-real world environments and actual field deployment tests throughout the program timeframe.