solar electric analysis for

Presented By:
Carl Yastrzemski
Yaz's Solar Company
SOLAR ELECTRIC ANALYSIS FOR:
Jack Sun
Recommended System Size
10.6 kW PV System
at
117 So Mary Ave, #30
Sunnyvale, CA 94087
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
WHY GO SOLAR?
Enjoy clean, renewable energy
from the Sun
Enjoy attractive ROI
Own your own generator
Enjoy improved cash flow
Reduce electric bills
Clean,
unlimited
resource
from the
Sun
Protect from rising
electric bills
Reduce harmful emissions: CO2,
SOx, NOx, Particulates
Increase property's resale
value
Less dependent on fossil
fuels and imported oil
Enjoy interesting new
technology
`
Reap PV benefits for current
or future electric car
ownership
Become a solar ambassador
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Presented By:
Carl Yastrzemski
Yaz's Solar Company
CURRENT ELECTRIC USAGE AND BILLING
Current Electric Usage
18,000 kWh /yr
Current Rate Schedule
E1
Monthly Bill (Before Solar)
$ 403 /mo
Annual Bill (Before Solar)
$ 4,832 /yr
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
HOW SOLAR ELECTRIC SYSTEMS WORK
DAY:
4#
1#
1
Sunlight falls on PV array generating DC electricity.
2
Inverter converts DC electricity into AC electricity.
3
AC electricity generated goes to appliances or lights. Excess electricity
goes to the utility grid spinning your electric meter backwards.
4
This reduces electric usage from the utility grid, and reduces your
electric bill.
3#
2#
This happens silently and automatically everyday.
NIGHT:
1#
1,2
Solar system's output stops.
3,4
Building gets the electricity directly from the utility grid.
4#
.
Time-Of-Use metering takes advantage of higher daytime electric rates,
allowing you to sell power at a high rate, and buy it back at night at a lower
rate.
2#
3#
This gives you the same reduction in your electric bill but with a smaller
solar system, reducing the system's cost.
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Presented By:
Carl Yastrzemski
Yaz's Solar Company
PROPOSED SOLAR ELECTRIC SYSTEM
10.6
PV system size (STC DC Rating)
Comprising 47 SunPower SPR-225E-BLK-U-ACPV modules and 3 SMA
America SB3000US (240V) inverters.
PV Array is 22° up from horizontal, and facing South
5.3
73%
5.3
14,987
Hours of equivalent full noontime sun occurs at
Sunnyvale, CA
Total system efficiency factor, accounting for inverter, module
temperature, wire losses, dust & dirt, and module mismatch
factors
Hours of effective equivalent full noontime sun, factoring in
shading & orientation
kWh/year estimated production (1,629 kWh per year per kW
CEC AC Capacity Rating)
Offsets about 83% of estimated/adjusted future usage
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
ESTIMATED PRODUCTION, USAGE, AND NEW BILL
Current Electric Usage
18,000 kWh /yr
Estimated Annual PV Production
14,987 kWh /yr
Suggested Rate Schedule with Solar
E6
Estimated New Monthly Bill with Solar
$ 13 /mo
Estimated New Annual Bill with Solar
$ 150 /yr
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
BILL OFFSET WITH SOLAR
% of Bill Offset
New Bill with Solar
97%
3%
New#Bill#
3%#
%#of#Bill#
Offset#
%#of#Bill#Offset#
97%#
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
ANNUAL SAVINGS WITH SOLAR
Year
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Without Solar
Old Bills
$4,832
$4,977
$5,126
$5,280
$5,438
$5,601
$5,769
$5,943
$6,121
$6,304
$6,494
$6,688
$6,889
$7,096
$7,309
$7,528
$7,754
$7,986
$8,226
$8,473
$8,727
$8,989
$9,258
$9,536
$9,822
With Solar
New Bills
$150
$154
$157
$161
$164
$168
$172
$176
$180
$184
$188
$192
$196
$201
$205
$210
$215
$219
$224
$229
$235
$240
$245
$251
$256
Savings
$4,681
$4,823
$4,969
$5,119
$5,274
$5,433
$5,598
$5,767
$5,941
$6,121
$6,306
$6,496
$6,693
$6,895
$7,103
$7,318
$7,539
$7,767
$8,001
$8,243
$8,492
$8,749
$9,013
$9,285
$9,566
New Bills and Electric Bill Savings with Solar
$12,000.00
$10,000.00
$8,000.00
$6,000.00
$4,000.00
$2,000.00
$0.00
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
Electric Bill Savings with Solar
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New Bills
Presented By:
Carl Yastrzemski
Yaz's Solar Company
PV SYSTEM COST AND INCENTIVES
Gross System Price
$58,163
Incentives:
U.S. Fed Tax Credit / Grant
Net value of Rebates
Fees not included in system contract price
Net System Cost
($17,047)
($1,840)
$500
$39,776
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
ECONOMICS AND RETURNS
Electric Bill Savings
1st-Year Savings
25-Year Cumulative Net Savings
Pre-Tax Compound Annual Rate of Return (IRR) over 25 years
Total Lifecycle Payback
$4,681
$141,763
22.7%
3.6x
Simple Payback
8.1 years
Estimated Initial Increase in Property Value
Estimated Maximum Resale Value increase occurs at year 8
$90,720
$105,708
Disclaimer: This information is provided as an illustration of potential financial benefits stemming from ownership of a renewable energy power system.
This is not a production guarantee. A professional accountant or tax advisor should confirm these estimates. Neither Yaz's Solar Company nor OnGrid
Solar warrants the applicability of these estimates for particular business cases, and both disclaim all liability.
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
ESTIMATED RESALE VALUE
A home's value increases by $20,000 for every
$1,000 reduction in annual operating costs
efficiency (according to the Appraisal Journal)
$180,000
Resale Value Over Time
$160,000
$140,000
Resale value increases over time as electric bill
savings increases due to escalation
$120,000
Resale Value
Rationale: Money from reduction in operating costs
can be spent on larger mortgage with no net
change in monthly cost of ownership (to a future
buyer)
$100,000
$80,000
$60,000
$40,000
$20,000
$0
Maximum value is likely capped at remaining
savings before system is out of module warranty
(25 years)
Years
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1
3
5
7 9 11 13 15 17 19 21 23 25
Remaining savings within 25 years
Effective Resale Value
20 times Annual Savings
Presented By:
Carl Yastrzemski
Yaz's Solar Company
SMART FINANCING
Smart Financing with a Line of Credit versus inefficent or optimistic simple loans:
Interest Rate: 7.5%
Term: 30 years
Inefficient Loan
Smart
Financed
Loan
Optimistic Loan
Amount Borrowed:
$56,822
$56,822
$39,776
Customer Out-of-Pocket
Expense:
$0
$0
$17,047
Monthly Payment (before
interest tax deduction):
$401
$289
$281
Smart Financing results depend on all tax incentives being applied to loan principal when received. Hence,
no money out of pocket, but also, no money wasted on unnecessary interest.
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
CASH FLOW IF FINANCED
Year 1
Year 2
Year 5
Year 10
Solar Cost with Smart Financing
$2,172
$2,672
$2,857
$3,238
Old Electric Bill with inflation
$4,832
$4,977
$5,438
$6,304
Cash Flow (Annual)
$2,660
$2,305
$2,581
$3,066
$12,000
$10,000
Annual Costs:
Solar plus Financing vs. No Solar
Annual Cost
$8,000
$6,000
$4,000
$2,000
Years
$0
1
3
5
7
9
11
Old Utility Bill w/ 3.0% inflation
13
15
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17
19
21
Solar Cost w/ Financing
23
25
Presented By:
Carl Yastrzemski
Yaz's Solar Company
ENVIRONMENTAL BENEFITS
Over 25 years, this solar system is estimated
to offset:
587,753 lbs of CO2 (greenhouse gas)
1,886 lbs of NOx (smog)
1,707 lbs of SOx (acid rain)
116 lbs of particulates (asthma)
956,333 miles in an average car
or 38,253 miles per year
It's like taking 3.1 cars off the road for 25 years
or planting 5.0 acres of trees.
© OnGrid Solar. All Rights Reserved
Presented By:
Carl Yastrzemski
Yaz's Solar Company
ASSUMPTIONS USED IN PROPOSAL
Estimates of solar production, system cost and economic returns are based on the following
assumptions: Federal and State Income Tax rate at 28.0 % and 9.3 % respectively
 Electric Rate Escalation: 3%
 General inflation (for maintenance, etc): 3.5%
 Total System Efficiency factor at 73%, accounting for inverter, module temperature, wire losses, dust & dirt, and module
mismatch factors
 Annual Module Degradation rate at 0.75% affecting future production due to aging (normally 0% to 1%)
 NREL Insolation Location used to determine sun-hours is San Francisco, CA (SFO Airport)
 Hours of equivalent full noontime sun is 5.3 hours (factoring in tilt, orientation, and shading)
 Inverter Replacement assumed at Year 15, costing $700 per STC kW

 If financed, loan interest rate at 7.5% with a loan term of 30 years
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