Solar Site JMU Project

By Farris Ismati and Mark Leith

Solar Radiation Map

kWh

Solar Radiation Map with Cloud Coverage

kWh

Largest Universities

kWh

Map of San Diego State University Campus

The dark red areas range from 9.58-12.5 kWh/m2 per day

San Diego State University Insolation Map

3D LIDar representation of Viejas Arena

Profile Graph Title

Profile Graph Subtitle

400350300250200150100500

470

460

450

440

Elevation in Feet Line X

Profile Graph Title

Profile Graph Subtitle

250200150100500

474

472

470

468

466

464

462

Elevation in Feet Line Y

x

y

Roof Dimensions

• Roof Area is roughly equal to 8,000 m2

• The roof of the Stadium gets over 12 kWh/m2

• Roof Slope .069 meters(line x) and .09 meters (line y)• Roof Slope changes from 4-5 degrees on lines x to y

8,000 m2

Top Down Viejas Arena3D Representation of Viejas Arena

4 – 5 Degree Slope

11.59-12.57 kWh/m2 per Day

2.59 -3.01 kWh/m2 per day

x

y

Latitude 32.77Longitude -117.07

Summer AdjustmentMarch 30 – September 12Flat Roof9.48 Degrees

With Roof Tilt 4.48-5.48 Degrees

Winter AdjustmentSeptember 12 – March 30

Flat Roof47.87 Degrees

With Roof Tilt42.87-43.87 Degrees

Azimuth Angle must be 180 Degrees South

PV Panel Tilt

Solar Panel• Model we used: Solar World SW 240 Poly

• Energy: 240 Watts = .24 kWh

• Price: $449.00 per panel

• Dimensions (Inches): Width 65.04, Length 39.41

Calculating Solar Array

Each Panel is 1.65 meters longEach row has ½ a meter of space

Estimated 2,602 maximum panels can fit on the 8,000 m2 roof. Depending on how much money the school wants to spend may reduce the amount of panels.

Solar Potential• Equating to a 500 kWh System after calculating loss

of energy by transferring DC to AC. (An average of

20% energy loss)

• Total cost of the system without incentives

$1,168,298

• Most rebates and incentives can range from 30%-

70% off of the total system

• Average of 5.3 hours of peak sunlight every day

• Produces about 967,250 kWh annually

Conclusion• Basic $.14 per kWh charged by the San Diego Gas

and Electricity company

• $135,415 subtracted from the total energy bill

annually

• Less than 8.7 years to pay back the total cost of the

system: NOT including rebates and incentives

SourcesData• http://www.grid.unep.ch/• http://www.gisuser.com/content/category/10/83/41/• http://srtm.csi.cgiar.org/Index.asp• http://www.energy.ca.gov/2005publications/CEC-500-2005-072/CEC-500-2005-072-D.PDF• http://www.mapmart.com/Products/DigitalElevationModel.aspx• http://zebu.uoregon.edu/1998/ph162/l4.html• http://sdge.com/clean-energy/clean-energy-options/solar-pilot-programs

Sources• http://www.calfinder.com/bid/solar-energy?SRC=Source108&SRC2=Source109&GID=4-

0&Pub_ID=3082&Landing_Page=bid-solar-energy&Sub_ID=&Click_ID=1272073• http://www.getsolar.com/solar-calculator/index.php• http://www.geog.ucsb.edu/~guan/courses/176A_Summer06/lab5/lab5.html

• https://www.sandiego.edu/epic/research_reports/documents/060309_ASESPVPotentialPaperFINAL_000.pdf

• http://webhelp.esri.com/arcgiSDEsktop/9.3/index.cfm?TopicName=Curvature• http://www.nrel.gov/eis/imby/• http://solarmap.lacounty.gov/solarDetails.html• http://www.macslab.com/optsolar.html