Solar Energy in Maryland November 2014 Presented by: Hans Wittich President Solargaines.
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Transcript of Solar Energy in Maryland November 2014 Presented by: Hans Wittich President Solargaines.
Solar Energy in MarylandNovember 2014
Presented by:Hans Wittich
PresidentSolargaines
COURSE AGENDA
1. Theory Overview• Environmental movement• Economic movement
2. Solar in Maryland• Incentives and climate• Strong growth
3. Case Study• How does it work• Design considerations• Installation• Monitoring of system• Financial Analysis
4. Interactive discussion
What will be learned 1. How it works
2. Four design principals• Orientation• Tilt• Shading• Weather / geographic
3. Installation and monitoring
4. Economics• Costs• Electricity savings• Tax benefits• Incentives
An oil spill is called a tragic environmental disaster…
A solar spill is just called a really nice day!!!
1. Theory Overview
Why Solar? Unlimited and sustainable resource
Clean power is included in the future of energy generationMany states have adopted “Renewable Portfolio Standards”
Taking responsibility for the futureCurrent circumstances present unprecedented opportunity to “do good” and “do well,” the proverbial “double dividend”
THE FUTURE IS NOW
30,000 ft view of renewables
• The way that we currently deliver power is, from an economic and environmental perspective, unsustainable. Period.– Dependent on limited resources – Environmentally damaging – Wasteful; concentrated generation vs. distributed generation
Solar in Maryland
1. Political Willpower• RPS/Net Metering• Federal stimulus• Sustainability
mandate2. Favorable conditions
• Sun hours per day3. Attractive economics
• Good incentives• Rising rates• Lower costs
First LEED Platinum home in Baltimore
Market trends
Case StudyDistribution Services Company
2. Basics•How does it work•Design Phase/technology overview•Installation and monitoring of system•Economic Review
How does it work?
• Technology is relatively simple and has been around since the 1960’s• Points of potential failure are minimal with few moving parts (Panels,
Inverters and Balance of System)• No Batteries (net metering)• The Panels (or Modules) have warranties to perform for 25 years; some
systems placed in service in the 1970’s are still producing power
Suitable locationFour Main Design Principals
• Azimuth / orientation• Tilt / pitch (latitude on earth)• Shading analysis• Weather Patterns (avg sun hours per day) insolation maps
Azimuth / orientation
Compass Azimuth (deg)
True Azimuth (deg) Direction Scaling Factor
91.12 80 0.7216
101.12 90 East 0.7683
111.12 100 0.813
121.12 110 0.8547
131.12 120 0.8925
141.12 130 0.9255
151.12 140 0.9531
161.12 150 0.9747
171.12 160 0.9899
181.12 170 0.9984
191.12 180 South 1
201.12 190 0.9948
211.12 200 0.9827
221.12 210 0.9642
231.12 220 0.9394
241.12 230 0.9089
251.12 240 0.8733
261.12 250 0.8335
271.12 260 0.7901
281.12 270 West 0.7443
Tilt / PitchTilt Angle (deg) Scaling Factor
0 0.8577
5 0.8957
10 0.9278
15 0.954
20 0.9744
25 0.9888
30 0.9973
35 1
40 0.9968
45 0.9876
50 0.9726
55 0.9517
60 0.9249
65 0.8922
70 0.8536
75 0.8091
80 0.7587
85 0.7024
90 0.6403
Shading Analysis
Insolation Maps
Racking / layout design• Inverter design• Roofing attachments for
pitched roof (shingle or metal) and flat roof.
• Balance of system / electrical engineering – Service size constraints
Appropriate panel/inverter design
Panel types – output characteristics• Poly and Mono Crystalline silicon• Thin Film CIGS• Building integrated – roof shingles, wall systems
Examples
Installation of system
Monitoring of system
Financial Analysis
Incentives / Returns
1. Tax Advantagesa. Federal Income Tax Credit
• 30% of total cost (including site preparation)b. Modified Accelerated Cost Recovery System (MACRS)
depreciation (commercial projects only)• NPV of depreciation is taxes avoided
2. Savings / Revenue Benefita. Annual Electricity Savings (Net Metering)
• kWhr X total rate (supply+distribution+transmission+tax)b. Solar Renewable Energy Certificates (SRECs)
• Renewable Portfolio Standard (RPS)• Spot Market vs Forward Contract
Structuring considerations
1. Corporate, LLC or solar proprietor?• Tax rate of entity or members• Where is tax liability?• Passive income issues
See Spreadsheet for Analysis
Contact us if you have any questions or interest in learning more
Solar Gaines10616 Beaver Dam Rd.Baltimore, MD 21030
410.785.1760www.solargaines.com