11.04.09
Path to your Energy SavingsExisting Residential and Small Commercial
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Goals of this WebinarProvide the tools and inform you of the steps you should take before and after installing solar to maximize your investment and reduce you carbon footprint.
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Agenda• PG&E
– Delivery Mix
– Integrated Approach
• The Full Energy Picture
• Before Going Solar– Energy Conservation
– Energy Efficiency
• Case Study
• Going Solar
• After Solar
• Resources
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PG&E’s Projected 2009 Electric Delivery Mix
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We’re committed to Energy Efficiency
PG&E has saved more than 155 million MWh and 12.5 billion therms from installed energy efficiency measures, which is the equivalent of powering over 23.5 million homes with electricity and heating 25 million homes with natural gas
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PG&E’s Integrated Approach
Reduce Energy
Use
Renewable Power Supply
NeutralizeEnergy
Use
Energy Efficiency
Solar &
Wind
Climate Smart
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1. Energy Conservation (No Cost) -Changing usage patterns to reduce energy consumption
2. Energy Efficiency (Low Cost) -Using less energy without changing patterns
3. Energy from Renewable’s (Investment) -Energy generated from natural resources (Solar, Wind, etc)
4. Carbon Offsets -Programs that allow individuals to reduce their impact on climate change
The Full Energy Picture: Loading Order
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Why Energy Efficiency Before Solar?
• Bigger “Bang for your Buck”– Less usage = smaller energy bills
– Cheap, easy, and less destructive to implement than other methods of energy
– Less usage smaller solar system needed lower cost
• Energy Audit Required to Participate in CSI Program– Educate yourself and your customers
• Analyze usage
• Learn what to do
• Contractor– Competitive advantage
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Before Solar
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Energy Audit: SmartEnergy ™ Analyzer
• Create a profile of your home and appliances
• Identify how much energy and money you can save
• Create a customized energy plan
www.pge.com/energyanalyzer
Take an Energy Efficiency Audit
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Step 1. Conservation Practices (No-Cost)
• Keep your thermostat at 68 degrees in the winter and 78 degrees in the summer (health permitting)
• Adjust thermostat up/down when you leave home or go to bed
• Lower your water heater’s thermostat to 120 degrees F
• Only run full dishwashers and loads of laundry
• Turn off the water when brushing teeth, washing dishes, etc.
• Take shorter showers
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Step 1 (con’t). Conservation Practices (Low Cost)
• Install faucet aerators, ultra-low flow toilets and showerheads
• Install irrigation controllers or, even better, drought- tolerant landscaping
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Step 2. Strive For High Efficiency (Low-Cost)
• Replace regular light bulbs with Compact Fluorescent Lamps (CFLs)– CFLs lasts up to 10 times longer and
use up to 75% less energy than regular bulbs
• Look for the PG&E sticker and save!
– Dispose of burned out bulbs properly by visiting Earth911.org to find a recycling facility
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Step 3. Strive For Higher Efficiency (Investment)
• Buy high efficiency appliances (i.e., clothes washers, dishwashers, water heaters)– These appliances use 10% to 50% less
energy than standard appliances
– Look for the ENERGY STAR®
• Weatherize your home– Insulate your attic and your walls
• We offer Rebates!
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• Residential
PG&E Offers a Variety of Rebates
•High-Efficiency Clothes Washers•ENERGY STAR®
Dishwashers•ENERGY STAR®
Room Air Conditioner•Electric Storage Water Heaters•Natural Gas Storage Water Heater•Attic and Wall Insulation
•Cool Roof – Low/Steep Slope•Whole House Fan •92% & 94% AFUE Central Natural Gas Furnace•Variable Speed Motor (VSM) Air Handler System•Variable and 2-Speed Swimming Pool Pump and Motor
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• Business– Agricultural Products
– Appliances and General Improvement
– Food Service
– Heating, Ventilation and Air Conditioning (HVAC)
– Lighting
– Refrigeration
– Boilers and Water Heating
– Business Computing
PG&E Offers a Variety of Rebates
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Case Study: How Does EE Effect Solar
System Size and Cost?
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Lighting
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Air-Conditioning and Duct Sealing
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Refrigeration
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Phantom Loads
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Pool Pumps
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Typical Single Family California Home*6,992 total kWh/year
Device % of home electricity Annual kWh for each device
Interior/Exterior Lighting 22.5% 1572Central Air / Ventilation 18.2% 1276Misc. 12.3% 858Refrigerator 11.8% 824Clothes Dryer 10.2% 713Computer 8.3% 578TV 7.4% 519Range Oven 4.3% 301Microwave 2.0% 140Clothes Washer 1.8% 127Dish Washer 1.2% 84
*RASS, PG&E, and DEER
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Opportunities for Savings
kWh Savings by Measure
0
100
200
300
400
500
600
700
Lighting Air Conditioning/ventilation
Refrigerator Phantom Loads Duct Sealing
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Large Single Family California Home with Pool Pump12,216 total kWh/year
Device % of home electricity Annual kWh for each device
Pool Pump 24.2% 2959Central Air / Ventilation
15.8% 1931
Interior/ Exterior Lighting
14.8% 1808
2nd Refrigerator 10.2% 1245Miscellaneous 8.1% 987Main Refrigerator 6.7% 824Clothes Dryer 5.8% 713Computer 4.7% 578TV 4.2% 519Range Oven 2.5% 301Microwave 1.1% 140Clothes Washer 1.0% 127Dish Washer 0.7% 84
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Opportunities for Savings
kWh Savings per Measure (Large Home)
0
500
1000
1500
2000
2500
Pool Pump Refrigerator AirConditioning/
ventilation
Lighting Phantom Loads Duct Sealing
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Lighting
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Lighting: Effect on Solar
2.1 Panel Reduction (210 watt)
$91 =
cost to implement measure
691 kWh/yr. saved = 433 Watt reduction on PV system size
($2,293)
reduction in upfront PV
system cost
Benefit/Cost Ratio 25 : 1
Replacing 60% of CFL applicable screw-base sockets in PG&E homes with CFLs
Large Home Lighting(kWh)
691
1117
EnergySavings
NewConsumption
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Air Conditioning & Duct Sealing
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2.1 Panel Reduction (210 watt)
$ 4,201
= cost to implement measure
708 kWh/yr. saved =293 Watt reduction on PV system size
($2,349)
reduction in upfront PV system cost
Benefit to Cost ratio: 0.56 : 1
Other Intangible Benefits:•Peak load reduction •Smart A/C program
A/C and Duct Sealing: Effect on Solar
Upgrading A/C unit from SEER 10 to EnergyStar®
(SEER 14.5) and sealing ducts to reduce leak from 19% to 12%
New 5 Ton A/C and Duct Sealing
708
1223
EnergySavingsNewConsumption
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Refrigerator Replacement
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$1,145
= cost to implement
measure
864 kWh/yr. saved = 542 Watt reduction on PV system size
($2,867)
reduction in upfront PV
system cost
Benefit to Cost ratio 2.5 : 1
2.6 Panel (210 watt)
Refrigeration: Effect on Solar
Replacing an existing refrigerator with a new EnergyStar®
unit
Main and 2nd Refrigerator(kWh)
864
1205 EnergySavings
NewConsumption
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Phantom Loads
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Phantom Loads
CEC –
TV, Computers, and other
entertainment make up 91% of plug loads, and 22% of that is attributed to Phantom Loads, aka Standby Power
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Conservation and Reducing Phantom Loads: Effect on Solar
$68 = cost to implement measure
300 kWh/yr. saved = 188 Watt reduction on PV system size
($996)
reduction in upfront
system cost
Benefit to Cost ratio: 11 : 1
0.9 Panel Reduction (210 watt)
230
1854
EnergySavingsNewConsumption
Home Electronic Consumption after EE (kWh)
Utilizing power strips and unplugging electronics/small appliances not in use
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Pool PumpReplacement
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Pool Pump: Effect on Solar
$1,457
= cost to implement measure
1736 kWh/yr. saved = 1,517 Watt reduction on PV size
($8,029)
reduction in up front system cost
Benefit to Cost ratio: 5.5 : 1
Pool Pump (kWh)
2420
539
EnergySavingsNewConsumption
7.2 Panel Reduction (210 watt)
Replacing a single speed pump with a variable speed pump
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Case Study:Savings & Payback
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Typical Single Family California Home* After EE
5,280 total kWhDevice % of home electricity Annual kWh for each device
Interior/Exterior Lighting 18.4% 970Central Air / Ventilation 15.3% 809Misc. 14.4% 758Refrigerator 13.5% 381Clothes Dryer 10% 713Computer 8.9% 528TV 7.2% 469Range Oven 2.7% 301Microwave 2.7% 140Clothes Washer 2.4% 127Dish Washer 1.6% 84
*RASS, PG&E, and DEER
1,712 kWh Saved (4,9013 kWh Saved with Large Home)
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PG&E Bill of Typical Customer
How EE and Solar Effect a Typical Customer's Bill
74106
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346
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Tier 1 ($.115) Tier 2 ($0.131) Tier 3 ($0.259)
kWh
Energy Eff iciency
Solar
Out of Pocket
Typical PG&E Home Savings:
143 kWh/mo.
$63.48/mo.
Avg. baseline allowance per day: 14Avg. billing days for month: 30
Avg. usage per month: 583 kWh
Rate Tiers Tier Usage (kWh) Charge/kWh Amount0 to 100% of Baseline ($0.115) 420.00 $0.11531 $48.43101 to 130% of Baseline($0.13) 126.00 $0.13109 $16.52131 to 200% of Baseline ($0.26) 37.00 $0.25974 $9.61
Total 583 $74.56
Average cost per kWh: $0.1279
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Typical PG&E Home: PV System Cost and Payback
Typical PG&E Home Total Upfront Savings: $5164.3 Panel Reduction
Size and Cost of Solar Before EE
(3.5 kW)
Cost of Implementing
EE
Size and Cost of Solar After EE
(2.6 kW)
Total Combined
Cost
$ 18,518* $ 4,246 $ 13, 756 $ 18,002*
~ 23 years ~ 13 years ~ 25 years ~ 21 years
*($9/watt)-CSI Incentive
-30% Federal Tax
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PG&E Bill of Large Solar Customer
Avg. baseline allowance per day: 14Avg. billing days for month: 30
Avg. usage per month: 1018 kWh
Rate Tiers Tier Usage (kWh) Charge/kWh Amount0 to 100% of Baseline ($0.115) 420.00 $0.11531 $48.43101 to 130% of Baseline($0.13) 126.00 $0.13109 $16.52131 to 200% of Baseline ($0.26) 294.00 $0.25974 $76.36201 to 300% of Baseline 178.00 $0.37866 $67.40
Total 1018 $208.71
Average cost per kWh: $0.2050
Large Solar PG&E Home Savings:
409kWh/mo.
$193.74/mo.
How EE and Solar Effect a Large Home Customer's Bill
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231178
289
126
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0
50
100
150
200
250
300
350
400
450
0 to 100% of Baseline($0.115)
101 to 130% ofBaseline($0.13)
131 to 200% ofBaseline ($0.26)
201 to 300% ofBaseline
kWh
Energy Eff iciency
Solar
Out of Pocket
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Large Solar PG&E Home: PV System Cost and Payback
Large Solar PG&E Home Total Upfront Savings: $8,88911.9 Panel Reduction
Size and Cost of Solar Before EE
(6.1 kW)
Cost of Implementing
EE
Size and Cost of Solar After EE
(3.6 kW)
Total Combined
Cost
$ 34,898* $ 6,962 $ 19, 047 $ 26,009*
~ 15 years ~4 years ~ 22 years ~ 10 years
*($9/watt)-CSI Incentive
-30% Federal Tax
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Going Solar
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Go Solar• Do your research:
– Roof conditions
– Shading and direction of roof
– Obtain bids from a minimum of 3 contractors
– How much usage to be offset (size of system)
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Go Solar• Reduce Costs
– California Solar Initiative• 10 year program (2007-2017)
• Must be in Investor Owned Utility (IOU) territory
• Residential Retrofit, Non-Residential retrofit/new construction
– Federal Tax Credit• 30% of net cost
• Extended through 2016
– Net Energy Metering• Meter keeps track of debits/credits
• “Buy and sell” at the going rate
• Cannot make a profit
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After Solar
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E-6 Time Periods Time of Use
Maximize your Rate Schedule
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0
5
10
15
20
25
30
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24Hours of the Day
Cen
ts p
er K
wh
Buying low and selling high adds value.
Use Credit
Credit
Time of Use RatesTime of Use Rates
Maximize your Rate Schedule
Use Credit
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Continue Conservation and Energy Efficiency Practices
• Maximize your systems production
• Solar is not an excuse to neglect conservation and efficiency
• Environmentally friendly
• Consider your Carbon Footprint
• Regular maintenance on your system
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Reducing your Carbon Footprint: ClimateSmart
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Questions and Answers
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• Rebates: www.pge.com/rebates
• Residential: 1-800-933-9555 www.pge.com/myhome/saveenergymoney
• Commercial: 1-800-468-4743 www.pge.com/mybusiness/energysavingsrebates
• Large Commercial: Contact your assigned PG&E Account Manger or Representative
• Energy Savings Calculator http://www.pge.com/myhome/saveenergymoney/resources/appliancecal culator/index.shtml
• Energy Audit: www.pge.com/energyanalyzer
Energy Efficiency Resources
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Solar Resourses• Solar Customer Service Center: 1-877-743-4112
www.pge.com/solar
• California Solar Initiative: [email protected] www.pge.com/CSI
• Net Energy metering: [email protected] www.pge.com/NEM
• Solar Classes: www.pge.com/solareducation www.pge.com/solarclasses