pa puc presentation 040915_yz
TRANSCRIPT
NGA Governors’ AdvisorsEnergy Policy Institute
Rick Counihan April 16,2015
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Agenda
Introducing the Nest Learning Thermostat
Current Studies of Energy Savings
Rush Hour Rewards
Seasonal Savings
Ideas for States
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Nest Learning Thermostat
Beautiful design
Packed with sensors
A learning object
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It’s easy
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Compatible with ~95% of low voltage systems
Works out of the box with the following:
Heating: one, two and three stages (W1, W2, W3)
Cooling: one and two stages (Y1, Y2)
Heat pump: with auxiliary and emergency heat (O/B, AUX, E)
Humidifier or dehumidifier (HUM, DEHUM)
Fan (G)
Power (C, Rh, Rc)Connectors: R, Rh, Rc, W1, W2/Aux, Y1, Y2, O/B, C, G
*= W3, E, HUM or DEHUM
Pro installer can help Nest work with:
Dual fuel systems (heat pump + furnace)
Whole-home humidifiers or dehumidifiers
Not typically compatible with:
Line voltage, millivolt systems, or low voltage systems withincompatible wires (some require installation of common wire)
Remote or floor sensors (S) [< 1%]
Proprietary systems [< 1%]
Incompatible 5%
New Nest20%
Original Nest75%
Time to TemperatureLearns how long it
takes to heat and cool
Early onGet the temperature you
want when you want it
SunblockAdjusts to direct
sunlight
Auto -AwayNotices when you’re out
to help s ave energy
Auto-ScheduleLearns your schedule and
helps you save
L eaf
Guides you towards moreenergy efficient settings
AirwaveUse less air conditioning
while staying cool
Filter R eminder
Uses system runtime toe stimate replacement
S ys tem MatchTurns on features to keepyou comfortable and help
you s ave
True RadiantLearns and gives you apredictable schedule
Heat Pump BalanceLearns and optimizes howoften you need expensive
auxiliary heat
Cool to DryUses A/C to dehumidify your
home
eUpstairs
oDownstairs
oProtect
Ff l
s. l V l hi ' f t-
A5 fZ> 'ft- 0 G)Thu 4
111111111 1111 111• l
L
II • • l ..
Wed 3 ..,Tue 2 1!1 • ....
Mon 1 ... ...
UpstairsSun 30 2 • •
Sat 29 1 1 1 4 ti•
Fri 28
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Energy History
Monthly Energy Report
Open Rate: 60%(3x industry standard)
Click-through rate: 5.6%
(3-6x industry standard)
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Energy Savings
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Traditional Thermostat S avings E stimates and Claims
•US DOE: 5%-15% savings per 8 hour setback per day
•US EPA: save $180/year (but dropped Energy Star designation in 2009)
•Nest: “could cut 20% off your heating and cooling bill” vs. constant set point
(customer specific)
•Ecobee: “customers in the US saved an average of 23% on their heating and
cooling costs” vs. constant 72°F
•Carrier: “homeowners saved an average of 20% on their heating and cooling
energy costs” vs. constant 72°F
•Tado: “cut your heating bill by up to 31%”vs. constant 68°F
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Pre-Nest
Energy Use Energy Savings
Nest Findings: Gas and E lectric Savings
Heating savingsn = 735
10%
18%
February,2015.Study performed by Nest Labs.
Cooling savingsn = 624
COOLING
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Fuel HVAC Total % of HVAC
Natural Gas (therms/yr) 584 56 ±12 9.6% ±2.1%
Electricity: cooling, no heat (kWh/yr) 3,351 585 ±97 17.5% ±2.9%
Independent Study #1 : Energy Trust of Oregon
‣ Electricity Savings:12% of heating use,781 kWh/yr
Savings attributed to strip heat control (Heat Pump Balance)‣
12%
89%
n = 185 heat pump customers, independent evaluation by Apex Analytics
Customer satisfaction‣High satisfaction:89%
‣ Improved Comfort:66%
Non-Energy Benefits: 34% say worth the cost even
without energy savings
‣
Heating electric savings
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Independent Study #2 : Vectren Indiana
Heating savingsNatural Gas Savings:12.5% of heating use,69 th/yr
13%
14%Cooling savingsElectricity Savings:13.9% of cooling use,429 kWh/yr
n = 300, independent evaluation by Cadmus
Standard programmable thermostat group savings:5%heating, 13.1%cooling
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Independent Study #3 : NIPSCo Indiana
Heating savingsNatural Gas Savings:13.4% of heating use,106 th/yr
13%
16%Cooling savingsElectricity Savings:16.1% of cooling use,388 kWh/yr
n = 400, independent evaluation by Cadmus
Standard programmable thermostat group savings:7.8%heating, 15% cooling
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Independent Study: PA State-Wide Evaluator*
•Smart Thermostat w/Electric Heating and Cooling
Savings:10.5 %
Cost:
TRC:
$249
2.59
•Smart Thermostat w/Electric Cooling and Non-electric Heating
Savings:13.6%
Cost:
TRC:
$249
.45 (no credit for natural gas savings)
* “EnergyEfficiency Potential Study Final Report”,Statewide Evaluator Team,February 2015,pp.D-5,6, Original Measure Nos.2022, 2024.
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Rus h Hour Rewards
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Life with Rus h Hour Rewards
Auto-Tune™gold gear appears as soon as pre-cooling starts (if necessary)
“R ush Hour ” i s displayed during the actual event
You’re always in control
78RUSH HOUR
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The results?
events completed
without adjustment
85%
kW reduction per
thermostat
1
cooling load
reduction
55%
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Seasonal Savings
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Seasonal Savings
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• Offered exclusively by Nest’s Energy Partners
• 0.7° average temperature increase
• 5-10% heating and cooling savings
• 65% completed program without adjustments
Works with Nest
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Capitalize on E E benefits of Nest ecosystemNest can send the “Away” signal to partner products
Lighting Appliances Load Switches Smart Plugs
WaterHeaters
PoolPumps
240V, 30 AMP
Switch120 V, <1.8 kW
Switch
Window
A/C
Portable
Heater
Extend RHR to other devices in the homeNest can send the “Rush Hour Rewards” signal to partner products
Load Switches Smart Plugs EV Chargers
State Ideas
New Low Hanging Fruit?
BYOT?
Statewide Seasonal Savings (MA DOER)?
New Kind of Demand Response (Uncertainty in DR Markets)?
Tool for Clean Power Plan ?