GIS as a Tool to Evaluate Rooftop Photovoltaics

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Information about GIS as a Tool to Evaluate Rooftop Photovoltaics
Education

Published on March 12, 2009

Author: pmantha

Source: slideshare.net

Description

Some of the slides from a presentation on my research thesis titled "GIS as a Tool to Evaluate the Solar Potential of the Fifty Largest Public Buildings and All Public Parking Lots in Pittsburgh"

Abstract:

My research thesis contributes to a solar energy planning system being developed for the city of Pittsburgh. It consists of a methodology and a prototype for planners and decision makers in relation to one of the key solar technologies: photovoltaics. Intended primarily to predict the solar potential for buildings and plots over an urban area, the research will support decisions regarding the solar radiation resource available on one particular public building or parking lot in Pittsburgh, the amount of electricity that can be generated for a certain PV system and technical configuration and so on. Based on a Geographical Information System (GIS), it is implemented to create solar radiation maps showing rooftop solar potential of city owned facilities as well as public parking lots in Pittsburgh. The prototype is focused on public properties since for the purposes of a demonstration project, a public property is a good place to start and would be a model for other city owned facilities to follow suit. It also sets a good example for residential photovoltaics to be installed. GIS and its tools is the central research tool in creating these maps. The final product is a GIS based user interface with each map containing all the information pertaining to solar insolation, prospective sites, energy consumption, generation and savings, along with recommendations for PV systems and technical configuration.

Keywords: Geographic Information Systems (GIS), rooftop photovoltaics, PV cost-benefit analysis

For more information, go to my blog:

environmentaldesign.wordpress.com

G I S A S A T O O L T O E VA L U AT E T H E S O L A R P O T E N T I A L O F F I F T Y L A R G E S T P U B L I C B U I L D I N G S A N D A L L P U B L I C PA R K I N G L O T S I N P I T T S B U R G H PALLAVI MANTHA Master of Science in Sustainable Design School of Architecture Carnegie Mellon University August 11, 2008

HARVESTING THE SUN Solar energy is the cleanest and safest alternative renewable energy Helps in mitigation of climate change Benefits: •Energy security •Energy independence •Zero emissions or noise pollution •Economic benefits - low O & M costs •Capability to create new jobs “Each day more solar energy hits the Earth than the total energy that the 5.9 billion inhabitants of the planet would consume in 27 years” (EPA, 2000)

ON-GOING EFFORTS The U.S. Department of Energy’s Million Solar Roofs, aims to bring solar energy to a million public and private U.S. rooftops by 2010. Solar America Initiative (SAI) is a major new R&D effort to achieve cost-competitive solar energy technologies by 2015 across all market sectors. Pennsylvania’s Alternative Energy Portfolio Standard (AEPS), signed into law in late 2004 mandates that 18 percent of all energy generated in the state will come from clean, efficient sources by 2020

OBJECTIVES Preparation of geographic maps showing visually the best sites for installing photovoltaics while demonstrating the use of GIS as a tool and creating a solar GIS database for these properties. Preparation of an economic case for 9 types of photovoltaic installations on the existing public Why Public Properties? buildings and parking lots Demonstration project Good example Model for other cities “This tool is a methodology and a prototype for planners and decision makers in relation to one of the key solar technologies: photovoltaics”

S O L A R A P P L I C AT I O N S FLAT PLATE Photovoltaics FIXED & TRACKING Solar Water Heating GRID-TIED Solar Thermal Passive Solar Design

USA SOLAR SCENARIOIS ASSUMPTIONS G

1 4 T Y P E S O F P V C O N G I G U R AT IM P T I O N S F S ASSU ONS Flat Plate tilted South at Latitude Flat Plate tilted South at Latitude minus 15 degrees Flat Plate tilted South at Latitude plus 15 degrees Horizontal Flat Plate North South Axis Tracking Flat Plate North South Axis Tracking Flat Plate tilted at Latitude North South Axis Tracking Flat Plate tilted at Latitude minus 15 degrees North South Axis Tracking Flat Plate tilted at Latitude plus 15 degrees Two axis tracking Flat Plate North South Axis Tracking Concentrator North South Axis Tracking Concentrator tilted at Latitude Single axis tracking concentrator East-West axis South Facing Vertical Flat Plate Two axis tracking concentrator Not considered in study Source: NREL GIS data Frame the question > Data Selection > Process Data > Create Outputs

OUTPUTS GIS ASSUMPTIONS • STATIC • STATIC • GIS • DATABASE OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 INTERFACE • Excel sheets • 3-D • 2-D • INTERACTIV • 108 layers • 108 layers E • Query for maps Frame the question > Data Selection > Process Data > Create Outputs

B A S E L AY E R S Frame the question > Data Selection > Process Data > Create Outputs

P U B L I C PA R K I N G L O T S Frame the question > Data Selection > Process Data > Create Outputs

R E S U LT S Frame the question > Data Selection > Process Data > Create Outputs

R E S U LT S Frame the question > Data Selection > Process Data > Create Outputs

PUBLIC BUILDINGS Frame the question > Data Selection > Process Data > Create Outputs

R E S U LT S Frame the question > Data Selection > Process Data > Create Outputs

R E S U LT S Frame the question > Data Selection > Process Data > Create Outputs

G I S I N T E R FA C E Frame the question > Data Selection > Process Data > Create Outputs

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