1. Auto-Demand Response Slides www.CypressEnvirosystems.com

2. Commercial buildings present a significant growth opportunity for the demand response market
Commercial buildings are vastly underrepresented in utility demand response portfolios
Southern California Edison reported 4% of their portfolio is from commercial buildings
Commercial buildings account for up to 50% of peak demand
Most existing buildings are not equipped to communicate with the Smart Grid
Retrofit technologies for existing buildings are needed to enable auto-demand response

3. Typical Pneumatic Thermostat
70% of existing buildings have pneumatic thermostats, which cannot speak with the Smart Grid—they should be replaced
Most commonly used HVAC control technology in existing nonresidential buildings
Approximately 70% of buildings in the US have pneumatic thermostats
Reliable but manual and analog
Temperature setpoints are set manually
Bimetallic strip affects air pressure, which controls the temperature and ventilation
Cannot communicate, waste energy, require unnecessary maintenance and create unhappy tenants
Cannot speak with the Smart Grid, i.e. no Auto-Demand Response
Waste HVAC Energy
Require unnecessary maintenance
Typical Pneumatic Thermostat
Pneumatic thermostats need to be replaced with communicating, programmable thermostats to save energy and maintenance costs.

4. Most pneumatic thermostats have not been replaced because retrofitting them is very expensive and invasive
Traditional DDC Retrofit is Invasive
Retrofitting pneumatic thermostats to DDC is not practical for most buildings
Very expensive:
$2,500-$3,000 per thermostat on average
7-10 year pay back
Invasive:
The retrofit requires walls to be opened to remove the pneumatic components and to run wire and install the digital actuator
Retrofits are not feasible if asbestos and other toxic materials are present
Disruptive:
Building tenants have to be moved while work is completed
Each thermostat requires several hours to days
Total project time requires months

5. The WPT eliminates the barriers to retrofitting pneumatic thermostats, enables auto-DR, and saves energy and maintenance
The WPT is a new retrofit solution for HVAC control that delivers the same benefits as traditional DDC
The WPT makes it feasible for more buildings to retrofit their pneumatic thermostats
The system has the OpenADR Protocol to communicate with the Smart Grid
Cost:
~$600 per thermostat installed
70-80% less expensive than DDC
18 month payback on average
Non-invasive:
No opening of walls or running wires
Toxic substances (like asbestos) do not impede installation
Not disruptive:
Tenants can continue working uninterrupted
20 minute installation per thermostat
Project time completed in days
WPT Provides DDC Zone Control without Disruption
Step 1
Step 2
Step 3
Step 4
Step 5
Identify pneumatic thermostat type
Remove thermostat and backplate
Install WPT backplate to wall
Attach pneumatic pipes to WPT
Hang on wall and integrate with BAS

6. ADR paid for 100% of a WPT retrofit
County Social Services Building
Best DDC Bid vs. WPT
DDC Quote
WPT Actual
Installed price
$875,000
$175,000
Project time
6 months
8 days
Disruption
Significant
Minimal
Toxic exposure
If present
None
PG&E ADR incentive
31%
100%
Realized Benefits and Payback Period
Actual Year-Over-Year Utility Data
Payback period: 16 months
210 kW Auto-Demand Response shed
Energy savings: $42,000/year
350,000 kWh per year at $0.12/kWh
Demand Response: $7,500/year
10,700 kWh per year at $0.70/kWh
Maintenance Cost Savings: $156,000/year
Reduced over 50% due to diagnostic data
Full case study available at:

7. The Wireless Pneumatic Thermostat is an integral part of part of several Smart Grid and auto-demand response programs
Smart Grid Research Centers
Utility Programs