System-Level Specifications Solar Cell Characteristics

Cell Type Triple junction solar cell

Cooling System Passive convection cooling with aluminum heat-sink

Cell Size 30 mm2

Temperature coefficient -0.12% per °C

System Frame Set

HCPV module power rating (CRC) 300 WpDC (1)

Cell-units per module 30

Power per cell-unit 10 WpDC (1)

Efficiency 30%

Acceptance tracking angle 1.8°

Voc 91.1 V

Isc 4.1 A

Fuse rating 8.0 A

Total frame-set output power (CRC) 2.85 kWpDC

Number of HCPV modules per frame-set 10

Frame-set footprint 7.1 ft x 32.8 ft / 2.165 m x 10.0 m

Frame-set row spacing 7.1 ft / 2.165 m

Weight 2,200 lbs / 998 kg 3.78 per ft2 / 18.44 kg per m2

Source strings per frame-set 2

Source String DC output specifications

Voltage at MPP 410 VDC

Current at MPP 3.51 A

Fuse rating (per NEC §690) 6.0 A

Tracker

Sealed with ultra-low evaporating lubricant

Tracking algorithm Module level power maximization

Tracking accuracy (incl. Backlash) 0.3°

Operable global latitude range 45°S – 45°N

Range of motion Azimuth 160°E – 160°W from South Elevation 0° – 120° from horizon

Elevation drive motor Single stepper motor

Azimuth drive motor Single stepper motor

Installation & Environment

Ambient operating temperature -20°C to 50°C

Power connectivity Junction box at tracker frame

Inverter compatibility Compatible with standard UL 1741 Listed grid tied DC/AC inverter

Installation zoning

Wind Wind Exposure D - Max 90 mph (145 km/h) (ASCE 07-05/IBC/UBC/CBC)

Seismic Seismic Zone 4 (UBC/CBC)

Certification UL 8703 / IEC 62108

Controls Software & Status Monitoring Control Stow-mode for wind safety at 50 mph (80.5 km/h) Dust mitigation mode to minimize soiling Clean mode for easy access cleaning

Database SQLite; open source in public domain (http://www.sqlite.org/)

Monitoring information Module resolution status indication (DC) Module level tracking angle indication Frame-set level power measurement (DC) Total field power measurement (DC) Ambient air temperature Wind speed

PowerPortTM Carport

Power production per PowerPort™ section Compact parking stalls: 13.0 MWh/year (2)

Standard parking stalls: 16.2 MWh/year (2)

(1) Concentrator Reporting Conditions (+/-10%) - 900 W/m2 DNI, AM 1.5, 20ºC Ambient Temperature, 4 m/s wind speed (2) Based on a DNI of 6.9 kWh/m2/day (comparable with the DNI value for the Palm Springs area which is provided by National Renewable Energy Laboratory (NREL)

118146.50

98738.861033

40.67

122748.31

373.814.72

M8 MOUNTING STUDS

115145.31

25610.08

1144.49

33.51.32

193.57.62

419.516.52

POWER CONNECTORS

HEAT SINK

Sunflower Frame-set Dimensions:

Energy Innovations, Inc.

www.energyinnovations.com(858) 375-7400

© 2010-2011 Energy Innovations, Inc. All rights reserved. Energy Innovations, the Energy Innovations logo, Sunflower, PowerPort, and the Sunflower logo are trademarks of Energy Innovations, Inc. All other trademarks and registered trademarks are the property of their respective owners. The information contained in this document is subject to change without notice. See engineering drawings for complete dimensions and installation information. Pricing, availability, technical details and feature sets subject to change without notice. PN: 101410

12.849505.9

11.250442.9

10.000393.7

2.01579.3

60°

2.50098.4

3.764148.2

1.66065.3

0.78731.0 0.566

22.3

Energy Innovations, based in San Diego, CA has pioneered the development of Highly Concentrated Photovoltaic (HCPV) systems that use concentration to substantially reduce the cost of solar energy. Since 2001, EI's mission has been to leverage the benefits of concentrated solar to achieve economic parity with fossil fuel generated power alternatives, making EI the first choice for alternative energy.

Fully Integrated, Versatile HCPV• New: 300 WpDC HCPV module• UL / IEC Certified

The Sunflower® control software provides closed-loop and open-loop tracking modes. Closed-loop is based on the individual module maximum solar power measurement with real-time feedback loop. Open-loop tracking is activated when a cloud shadows the Sunflower system. In this case, the feedback loop for tracking is based on continuous calibrated solar positioning data. As soon as this cloud shadowing disappears, the Sunflower modules will immediately produce power, maximizing system availability.

Standard 37.5 feet wide CPV carport sections for compact-car and standard-car parking stalls. Each carport section covers 4 to 5 parking stalls. No column intrusion in parking stalls.

UL 8703 IEC 62108

Percent Rated Power Over Ambient Temperature100

95

90

85

80

75

20º C

40º C

® hcpv Mono Si PV Poly Si PV Thin

Percent of Rated Power Over Time

33º Tilt PV

5º Tilt Carport PV

100%

50%

0%

6:30 am 12:30 pm 6:30 pm

Fully Integrated, Versatile HCPV

Why Concentrated PV?In bright sunny locations, CPV systems use less land and have a lower cost of energy than comparable PV or Thin Film installations. These important CPV advantages enable better land use, higher energy production, and ultimately greater return on your solar investment.

Sunflower TechnologyMeasuring less than seven feet in overall height, single module tracker creates a low profile design that is aesthetically appealing. Through the combination of 30% efficiency, 2-axis tracking and superior temperature performance, a 30% increase in annual electricity production can be expected over traditional 33º tilt PV systems (installed Watts). For carports and rooftops, where PV tilt is only 5º, annual kWh production ratio can be as much as 40% higher than traditional silicon PV.

High Concentration & Industry-Leading EfficiencyWhile most CPV systems concentrate the sun only 500:1, Advanced HCPV modules concentrate the sun 1,200:1. 500 sun CPV systems require 2.4 times the amount of expensive multi-junction cell material giving a substantial cost advantage. In addition, high concentration modules achieve a world-leading 30% aperture efficiency, nearly double that of the typical PV panel.

Superior High Temperature Performance CPV technology is better suited than silicon PV in sunny, high ambient temperature locations. This is because uses heat resistant multi-junction cells and not silicon PV. Silicon based PV panels lose 0.5% of their rated power for every degree Celsius they increase over their 25ºC rating temperature. Once on sun, operating temperatures can reach up to 75ºC causing traditional PV panels to lose 20 to 25% of their rated power. Heat tolerant multi-junction cells lose only 2% of their rated power under these same conditions. This important difference gives a significant energy harvest advantage in these hot sunny locations.

Industry’s Lowest Installation CostsSunflower’s space frame mounting structure is transported to the job site in standardized reusable containers and is quickly and easily unloaded and assembled. Each module is mounted on a pre-assembled yoke structure that makes installation to the mounting frame nearly “plug and play”. No foundations are required. There are no holes to dig, concrete to pour or cranes required as is the case with large, multi-module tracker-based CPV systems. Sunflower’s low profile frame assembly consists of two rows assembled together, creating a simple yet highly rigid space frame to support the modules. This self-ballasting system simply rests on graded soil, and standard electrical connections complete the assembly.

Maintenance-Free 2-Axis MicroTrackerSunflower’s unique single module tracker holds the module at its center of gravity, virtually eliminating resisting torque on the gearbox and motor. This unique design practically eliminates wear on the gearbox and motor so backlash will remain within specifications over the planned 30 year system life. In addition, the gearbox is sealed and protected from the environment and utilizes ultra-low evaporation lubricants adapted from the space program, making it maintenance free over its 30 year life.

Energy Harvest OptimizationPeak Power TrackingSunflower measures the power output from each module and adjusts the tracking to peak the power from each module individually. This Peak Power Tracking method eliminates the need for unreliable sensors and cameras as pointing devices. This has the added benefit of providing built-in status monitoring information down to the module level which can be accessed anywhere, easing operating and maintenance costs. When the sun is obscured by a cloud, Sunflower continues to track the sun in “open loop” tracking mode by following the sun’s expected path. So when the sun emerges, Sunflower is immediately producing power again.

Micro-Converter TechnologySunflower utilizes a unique micro-converter to optimize energy harvest. Each micro-converter serves five modules and provides several key functions. First, it steps up the voltage to a fixed 410VDC allowing for smaller gauge wire to be used and longer runs. This also provides a fixed voltage output, feeding the inverter at its optimal efficiency point as well as increasing energy harvest in low light conditions when PV inverters shut down due to low voltages associated with low light. Second, it provides localized Maximum Power Point Tracking to minimize mismatch losses between modules. And finally, it runs the tracking system from the DC bus, eliminating the need to run additional AC wires to the trackers as is the case with large multi-module tracking systems.

The revolutionary highly concentrated photovoltaic (HCPV) system is the world’s only CPV solution that can be installed on the field, on any rooftop or on a carport. Integrates ultra high efficiency modules, advanced tracking, micro-converter technology, wireless communication and built-in status moni-toring into one elegant turnkey solution. Produces cost-competitive solar power with the lowest installation and maintenance costs in the industry.

Built-In Status MonitoringEvery Sunflower system comes with a built-in status monitoring and field management system that simplifies operation and lowers O&M costs. Sunflower collects module level data and sends this telemetry up to the array PC wirelessly, eliminating the need for Ethernet cabling in the field. This data can also be integrated to third party software as needed.

Sunflower: CPV Made EasySunflower’s differentiated approach to HCPV represents the way forward for high solar resource environments. From our superior energy harvest, to our plug and play mounting system to our wireless communications and built-in status monitoring — every element of the Sunflower system was designed with lowest cost of energy in mind.

Flexible Mounting Options

PowerPort™ Carport

The PowerPort family of products is based on standardized carport sections that are designed for any number of compact-car, handicapped and standard parking spaces. PowerPort mounts Sunflower’s unique single module tracking system on a standard carport roof-structure to save weight, installation time and money. PowerPort was designed from the ground up with building codes in mind. Currently PowerPort complies with all relevant California codes for wind-load and earthquake resistance. PowerPort is shipped as a standard product in sub-sections that can be assembled onsite quickly and easily.

Energy Innovations has taken a differentiated approach to Concentrated Solar. Sunflower’s unique low profile, single module tracker design provides for a wide range of mounting options allowing customers to enjoy the same increased energy harvest benefits beyond the field to rooftops and carports.

Rooftop Installations

Weighing less than four (4) lbs per square foot (less than 19 kg/m2), the Sunflower HCPV system is an ideal solution to improve energy production on tight roof spaces. Sunflower’s roof-mount is non-penetrating and can be adapted to any roof surface and joist spacing. Sunflower’s mounting structure provides a deck clearance of 27 inches (70 cm) which clears most roof obstacles such as skylights, conduits and HVAC lines allowing for ease of installation and higher power density.

Field Installed System

The Sunflower mounting system employs a unique “space-frame” structure that assembles in minutes with simple wrenches. It is self-ballasting and requires no concrete footings or foundations of any kind. This construction-friendly design requires minimal installation training and allows for large construction tolerances, simplifying installation and reducing costs. Upon initial system startup, Sunflower’s control software conducts a self-calibration function that locates the sun and calibrates out any installation errors. This simplifies installation and reduces labor costs, making Sunflower the lowest installed cost CPV system in the industry.

Providessuperior performancein high ambienttemperature environments

Providessuperior performanceversus traditional silicon PV panels

Key Features

Flexible Mounting Structure

• Sunflower can be mounted on a rooftop, carport or in a solar field

• Unique space frame design assembles in minutes saving time & money

• Mounting structure is self-ballasting, eliminating concrete footers and costly roof penetrations

High-Efficiency Module

• Industry-leading 30% module efficiency

• 1,200 sun concentration onto high-efficiency, triple junction cells

• Composite Silicone on Glass (SOG) primary lens enhances reliability and reduces soiling

Ultra Wide Acceptance Angle

• Advanced optical design yields industry-leading ±0.9º acceptance angle

Integrated Tracker Frame-Set

• Low-profile design enables quicker installation and minimal on-going maintenance

• Wiring is pre-assembled at the factory; field wiring connection is “plug and play”

• Non-penetrating, self-ballasting ground and rooftop mount structure

• Integrated 2-axis MicroTracker

• Sealed gearbox requires no maintenance over life of system

• Intelligent dust mitigation system

Micro-Converter Technology

• All HCPV modules are connected in parallel which improves redundancy

• Improves performance of shaded modules

• Improves inverter performance in low light conditions

• Optimizes power by providing local MPPT

• 410VDC high power output allows for lower wire losses

Status Monitoring

• Built-in status monitoring allows module level statistics, fault alarms, remote monitoring and field management

• Standard SQL database allows for easy integration with third-party solar monitoring software

• Integrated wireless telemetry network eliminates the need for field cabling

Percent Rated Power Over Ambient Temperature100

95

90

85

80

75

20º C

40º C

Sunflower® Mono Si PV Poly Si PV Thin Film

Percent of Rated Power Over Time

Sunflower®

33º Tilt PV

5º Tilt Carport PV

100%

50%

0%

6:30 am 12:30 pm 6:30 pm

Fully Integrated, Versatile HCPV

Why Concentrated PV?In bright sunny locations, CPV systems use less land and have a lower cost of energy than comparable PV or Thin Film installations. These important CPV advantages enable better land use, higher energy production, and ultimately greater return on your solar investment.

Sunflower TechnologyMeasuring less than seven feet in overall height, Sunflower’s single module tracker creates a low profile design that is aesthetically appealing. Through the combination of Sunflower’s 30% efficiency, 2-axis tracking and superior temperature performance, a 30% increase in annual electricity production can be expected over traditional 33º tilt PV systems (installed Watts). For carports and rooftops, where PV tilt is only 5º, Sunflower’s annual kWh production ratio can be as much as 40% higher than traditional silicon PV.

High Concentration & Industry-Leading EfficiencyWhile most CPV systems concentrate the sun only 500:1, Sunflower advanced HCPV modules concentrate the sun 1,200:1. 500 sun CPV systems require 2.4 times the amount of expensive multi-junction cell material giving Sunflower a substantial cost advantage. In addition, Sunflower high concentration modules achieve a world-leading 30% aperture efficiency, nearly double that of the typical PV panel.

Superior High Temperature Performance Sunflower’s CPV technology is better suited than silicon PV in sunny, high ambient temperature locations. This is because Sunflower uses heat resistant multi-junction cells and not silicon PV. Silicon based PV panels lose 0.5% of their rated power for every degree Celsius they increase over their 25ºC rating temperature. Once on sun, operating temperatures can reach up to 75ºC causing traditional PV panels to lose 20 to 25% of their rated power. Sunflower’s heat tolerant multi-junction cells lose only 2% of their rated power under these same conditions. This important difference gives Sunflower a significant energy harvest advantage in these hot sunny locations.

Industry’s Lowest Installation CostsSunflower’s space frame mounting structure is transported to the job site in standardized reusable containers and is quickly and easily unloaded and assembled. Each module is mounted on a pre-assembled yoke structure that makes installation to the mounting frame nearly “plug and play”. No foundations are required. There are no holes to dig, concrete to pour or cranes required as is the case with large, multi-module tracker-based CPV systems. Sunflower’s low profile frame assembly consists of two rows assembled together, creating a simple yet highly rigid space frame to support the modules. This self-ballasting system simply rests on graded soil, and standard electrical connections complete the assembly.

Maintenance-Free 2-Axis MicroTrackerSunflower’s unique single module tracker holds the module at its center of gravity, virtually eliminating resisting torque on the gearbox and motor. This unique design practically eliminates wear on the gearbox and motor so backlash will remain within specifications over the planned 30 year system life. In addition, the gearbox is sealed and protected from the environment and utilizes ultra-low evaporation lubricants adapted from the space program, making it maintenance free over its 30 year life.

Energy Harvest OptimizationPeak Power TrackingSunflower measures the power output from each module and adjusts the tracking to peak the power from each module individually. This Peak Power Tracking method eliminates the need for unreliable sensors and cameras as pointing devices. This has the added benefit of providing built-in status monitoring information down to the module level which can be accessed anywhere, easing operating and maintenance costs. When the sun is obscured by a cloud, Sunflower continues to track the sun in “open loop” tracking mode by following the sun’s expected path. So when the sun emerges, Sunflower is immediately producing power again.

Micro-Converter TechnologySunflower utilizes a unique micro-converter to optimize energy harvest. Each micro-converter serves five modules and provides several key functions. First, it steps up the voltage to a fixed 410VDC allowing for smaller gauge wire to be used and longer runs. This also provides a fixed voltage output, feeding the inverter at its optimal efficiency point as well as increasing energy harvest in low light conditions when PV inverters shut down due to low voltages associated with low light. Second, it provides localized Maximum Power Point Tracking to minimize mismatch losses between modules. And finally, it runs the tracking system from the DC bus, eliminating the need to run additional AC wires to the trackers as is the case with large multi-module tracking systems.

The revolutionary Sunflower® highly concentrated photovoltaic (HCPV) system is the world’s only CPV solution that can be installed on the field, on any rooftop or on a carport. Sunflower integrates ultra high efficiency modules, advanced tracking, micro-converter technology, wireless communication and built-in status moni-toring into one elegant turnkey solution. Sunflower produces cost-competitive solar power with the lowest installation and maintenance costs in the industry.

Built-In Status MonitoringEvery Sunflower system comes with a built-in status monitoring and field management system that simplifies operation and lowers O&M costs. Sunflower collects module level data and sends this telemetry up to the array PC wirelessly, eliminating the need for Ethernet cabling in the field. This data can also be integrated to third party software as needed.

Sunflower: CPV Made EasySunflower’s differentiated approach to HCPV represents the way forward for high solar resource environments. From our superior energy harvest, to our plug and play mounting system to our wireless communications and built-in status monitoring — every element of the Sunflower system was designed with lowest cost of energy in mind.

Flexible Mounting Options

PowerPort™ Carport

The PowerPort family of products is based on standardized carport sections that are designed for any number of compact-car, handicapped and standard parking spaces. PowerPort mounts unique single module tracking system on a standard carport roof-structure to save weight, installation time and money. PowerPort was designed from the ground up with building codes in mind. Currently PowerPort complies with all relevant codes for wind-load and earthquake resistance. PowerPort is shipped as a standard product in sub-sections that can be assembled onsite quickly and easily.

Taken a differentiated approach to Concentrated Solar. Unique low profile, single module tracker design provides for a wide range of mounting options allowing customers to enjoy the same increased energy harvest benefits beyond the field to rooftops and carports.

Rooftop Installations

Weighing less than four (4) lbs per square foot (less than 19 kg/m2),HCPV system is an ideal solution to improve energy production on tight roof spaces. roof-mount is non-penetrating and can be adapted to any roof surface and joist spacing. Mounting structure provides a deck clearance of 27 inches (70 cm) which clears most roof obstacles such as skylights, conduits and HVAC lines allowing for ease of installation and higher power density.

Field Installed System

Mounting system employs a unique “space-frame” structure that assembles in minutes with simple wrenches. It is self-ballasting and requires no concrete footings or foundations of any kind. This construction-friendly design requires minimal installation training and allows for large construction tolerances, simplifying installation and reducing costs. Upon initial system startup, control software conducts a self-calibration function that locates the sun and calibrates out any installation errors. This simplifies installation and reduces labor costs, making the lowest installed cost CPV system in the industry.

Sunflower® providessuperior performancein high ambienttemperature environments

Sunflower® providessuperior performanceversus traditional silicon PV panels

Key Features

Flexible Mounting Structure

• Sunflower can be mounted on a rooftop, carport or in a solar field

• Unique space frame design assembles in minutes saving time & money

• Mounting structure is self-ballasting, eliminating concrete footers and costly roof penetrations

High-Efficiency Module

• Industry-leading 30% module efficiency

• 1,200 sun concentration onto high-efficiency, triple junction cells

• Composite Silicone on Glass (SOG) primary lens enhances reliability and reduces soiling

Ultra Wide Acceptance Angle

• Advanced optical design yields industry-leading ±0.9º acceptance angle

Integrated Tracker Frame-Set

• Low-profile design enables quicker installation and minimal on-going maintenance

• Wiring is pre-assembled at the factory; field wiring connection is “plug and play”

• Non-penetrating, self-ballasting ground and rooftop mount structure

• Integrated 2-axis MicroTracker

• Sealed gearbox requires no maintenance over life of system

• Intelligent dust mitigation system

Micro-Converter Technology

• All HCPV modules are connected in parallel which improves redundancy

• Improves performance of shaded modules

• Improves inverter performance in low light conditions

• Optimizes power by providing local MPPT

• 410VDC high power output allows for lower wire losses

Status Monitoring

• Built-in status monitoring allows module level statistics, fault alarms, remote monitoring and field management

• Standard SQL database allows for easy integration with third-party solar monitoring software

• Integrated wireless telemetry network eliminates the need for field cabling

Percent Rated Power Over Ambient Temperature100

95

90

85

80

75

20º C

40º C

Sunflower® Mono Si PV Poly Si PV Thin Film

Percent of Rated Power Over Time

Sunflower®

33º Tilt PV

5º Tilt Carport PV

100%

50%

0%

6:30 am 12:30 pm 6:30 pm

Fully Integrated, Versatile HCPV

Why Concentrated PV?In bright sunny locations, CPV systems use less land and have a lower cost of energy than comparable PV or Thin Film installations. These important CPV advantages enable better land use, higher energy production, and ultimately greater return on your solar investment.

Sunflower TechnologyMeasuring less than seven feet in overall height, Sunflower’s single module tracker creates a low profile design that is aesthetically appealing. Through the combination of Sunflower’s 30% efficiency, 2-axis tracking and superior temperature performance, a 30% increase in annual electricity production can be expected over traditional 33º tilt PV systems (installed Watts). For carports and rooftops, where PV tilt is only 5º, Sunflower’s annual kWh production ratio can be as much as 40% higher than traditional silicon PV.

High Concentration & Industry-Leading EfficiencyWhile most CPV systems concentrate the sun only 500:1, Sunflower advanced HCPV modules concentrate the sun 1,200:1. 500 sun CPV systems require 2.4 times the amount of expensive multi-junction cell material giving Sunflower a substantial cost advantage. In addition, Sunflower high concentration modules achieve a world-leading 30% aperture efficiency, nearly double that of the typical PV panel.

Superior High Temperature Performance Sunflower’s CPV technology is better suited than silicon PV in sunny, high ambient temperature locations. This is because Sunflower uses heat resistant multi-junction cells and not silicon PV. Silicon based PV panels lose 0.5% of their rated power for every degree Celsius they increase over their 25ºC rating temperature. Once on sun, operating temperatures can reach up to 75ºC causing traditional PV panels to lose 20 to 25% of their rated power. Sunflower’s heat tolerant multi-junction cells lose only 2% of their rated power under these same conditions. This important difference gives Sunflower a significant energy harvest advantage in these hot sunny locations.

Industry’s Lowest Installation CostsSpace frame mounting structure is transported to the job site in standardized reusable containers and is quickly and easily unloaded and assembled. Each module is mounted on a pre-assembled yoke structure that makes installation to the mounting frame nearly “plug and play”. No foundations are required. There are no holes to dig, concrete to pour or cranes required as is the case with large, multi-module tracker-based CPV systems. low profile frame assembly consists of two rows assembled together, creating a simple yet highly rigid space frame to support the modules. This self-ballasting system simply rests on graded soil, and standard electrical connections complete the assembly.

Maintenance-Free 2-Axis MicroTrackerUnique single module tracker holds the module at its center of gravity, virtually eliminating resisting torque on the gearbox and motor. This unique design practically eliminates wear on the gearbox and motor so backlash will remain within specifications over the planned 30 year system life. In addition, the gearbox is sealed and protected from the environment and utilizes ultra-low evaporation lubricants adapted from the space program, making it maintenance free over its 30 year life.

Energy Harvest OptimizationPeak Power TrackingMeasures the power output from each module and adjusts the tracking to peak the power from each module individually. This Peak Power Tracking method eliminates the need for unreliable sensors and cameras as pointing devices. This has the added benefit of providing built-in status monitoring information down to the module level which can be accessed anywhere, easing operating and maintenance costs. When the sun is obscured by a cloud, continues to track the sun in “open loop” tracking mode by following the sun’s expected path. So when the sun emerges, is immediately producing power again.

Micro-Converter TechnologyUtilizes a unique micro-converter to optimize energy harvest. Each micro-converter serves five modules and provides several key functions. First, it steps up the voltage to a fixed 410VDC allowing for smaller gauge wire to be used and longer runs. This also provides a fixed voltage output, feeding the inverter at its optimal efficiency point as well as increasing energy harvest in low light conditions when PV inverters shut down due to low voltages associated with low light. Second, it provides localized Maximum Power Point Tracking to minimize mismatch losses between modules. And finally, it runs the tracking system from the DC bus, eliminating the need to run additional AC wires to the trackers as is the case with large multi-module tracking systems.

The revolutionary Sunflower® highly concentrated photovoltaic (HCPV) system is the world’s only CPV solution that can be installed on the field, on any rooftop or on a carport. Sunflower integrates ultra high efficiency modules, advanced tracking, micro-converter technology, wireless communication and built-in status moni-toring into one elegant turnkey solution. Sunflower produces cost-competitive solar power with the lowest installation and maintenance costs in the industry.

Built-In Status MonitoringSystem comes with a built-in status monitoring and field management system that simplifies operation and lowers O&M costs. Collects module level data and sends this telemetry up to the array PC wirelessly, eliminating the need for Ethernet cabling in the field. This data can also be integrated to third party software as needed.

CPV Made EasyDifferentiated approach to HCPV represents the way forward for high solar resource environments. From our superior energy harvest, to our plug and play mounting system to our wireless communications and built-in status monitoring — every element of the system was designed with lowest cost of energy in mind.

Flexible Mounting Options

PowerPort™ Carport

The PowerPort family of products is based on standardized carport sections that are designed for any number of compact-car, handicapped and standard parking spaces. PowerPort mounts Sunflower’s unique single module tracking system on a standard carport roof-structure to save weight, installation time and money. PowerPort was designed from the ground up with building codes in mind. Currently PowerPort complies with all relevant California codes for wind-load and earthquake resistance. PowerPort is shipped as a standard product in sub-sections that can be assembled onsite quickly and easily.

Energy Innovations has taken a differentiated approach to Concentrated Solar. Sunflower’s unique low profile, single module tracker design provides for a wide range of mounting options allowing customers to enjoy the same increased energy harvest benefits beyond the field to rooftops and carports.

Rooftop Installations

Weighing less than four (4) lbs per square foot (less than 19 kg/m2), the Sunflower HCPV system is an ideal solution to improve energy production on tight roof spaces. Sunflower’s roof-mount is non-penetrating and can be adapted to any roof surface and joist spacing. Sunflower’s mounting structure provides a deck clearance of 27 inches (70 cm) which clears most roof obstacles such as skylights, conduits and HVAC lines allowing for ease of installation and higher power density.

Field Installed System

The Sunflower mounting system employs a unique “space-frame” structure that assembles in minutes with simple wrenches. It is self-ballasting and requires no concrete footings or foundations of any kind. This construction-friendly design requires minimal installation training and allows for large construction tolerances, simplifying installation and reducing costs. Upon initial system startup, Sunflower’s control software conducts a self-calibration function that locates the sun and calibrates out any installation errors. This simplifies installation and reduces labor costs, making Sunflower the lowest installed cost CPV system in the industry.

Sunflower® providessuperior performancein high ambienttemperature environments

Sunflower® providessuperior performanceversus traditional silicon PV panels

Key Features

Flexible Mounting Structure

• Can be mounted on a rooftop, carport or in a solar field

• Unique space frame design assembles in minutes saving time & money

• Mounting structure is self-ballasting, eliminating concrete footers and costly roof penetrations

High-Efficiency Module

• Industry-leading 30% module efficiency

• 1,200 sun concentration onto high-efficiency, triple junction cells

• Composite Silicone on Glass (SOG) primary lens enhances reliability and reduces soiling

Ultra Wide Acceptance Angle

• Advanced optical design yields industry-leading ±0.9º acceptance angle

Integrated Tracker Frame-Set

• Low-profile design enables quicker installation and minimal on-going maintenance

• Wiring is pre-assembled at the factory; field wiring connection is “plug and play”

• Non-penetrating, self-ballasting ground and rooftop mount structure

• Integrated 2-axis MicroTracker

• Sealed gearbox requires no maintenance over life of system

• Intelligent dust mitigation system

Micro-Converter Technology

• All HCPV modules are connected in parallel which improves redundancy

• Improves performance of shaded modules

• Improves inverter performance in low light conditions

• Optimizes power by providing local MPPT

• 410VDC high power output allows for lower wire losses

Status Monitoring

• Built-in status monitoring allows module level statistics, fault alarms, remote monitoring and field management

• Standard SQL database allows for easy integration with third-party solar monitoring software

• Integrated wireless telemetry network eliminates the need for field cabling

System-Level Specifications Solar Cell Characteristics

Cell Type Triple junction solar cell

Cooling System Passive convection cooling with aluminum heat-sink

Cell Size 30 mm2

Temperature coefficient -0.12% per °C

System Frame Set

HCPV module power rating (CRC) 367 WpDC (1)

Cell-units per module 20

Power per cell-unit 10 WpDC (1)

Efficiency 32%

Acceptance tracking angle 1.8°

Voc 64.4 V

Isc 7.4 A

Fuse rating 8.0 A

Total frame-set output power (CRC) 3.67 kWpDC

Number of HCPV modules per frame-set 10

Frame-set footprint 7.1 ft x 32.8 ft / 2.165 m x 10.0 m

Frame-set row spacing 7.1 ft / 2.165 m

Weight 2,200 lbs / 998 kg 3.78 per ft2 / 18.44 kg per m2

Source strings per frame-set 1

Source String DC output specifications

Voltage at MPP 410 VDC

Current at MPP 7.51 A

Fuse rating (per NEC §690) 15.0 A

Tracker

Sealed with ultra-low evaporating lubricant

Tracking algorithm Module level power maximization

Tracking accuracy (incl. Backlash) 0.3°

Operable global latitude range 45°S – 45°N

Range of motion Azimuth 160°E – 160°W from South Elevation 0° – 120° from horizon

Elevation drive motor Single stepper motor

Azimuth drive motor Single stepper motor

Installation & Environment

Ambient operating temperature -20°C to 50°C

Power connectivity Junction box at tracker frame

Inverter compatibility Compatible with standard UL 1741 Listed grid tied DC/AC inverter

Installation zoning

Wind Wind Exposure D - Max 90 mph (145 km/h) (ASCE 07-05/IBC/UBC/CBC)

Seismic Seismic Zone 4 (UBC/CBC)

Certification UL 8703 / IEC 62108

(1) Concentrator Reporting Conditions (+/-10%) - 900 W/m2 DNI, AM 1.5, 20ºC Ambient Temperature, 4 m/s wind speed (2) Based on a DNI of 6.9 kWh/m2/day (comparable with the DNI value for the Palm Springs area which is provided by National Renewable Energy Laboratory (NREL)

HCPV SystemSunflower HCPV Module Dimensions:Dimensions and mounting locations in millimeters [inches]

Dimensions in meters [inches]

Physical Specifications

118146.50

98738.861033

40.67

122748.31

373.814.72

M8 MOUNTING STUDS

115145.31

25610.08

1144.49

33.51.32

193.57.62

419.516.52

POWER CONNECTORS

HEAT SINK

Sunflower Frame-set Dimensions:

Energy Innovations, Inc.

www.energyinnovations.com(858) 375-7400

© 2010-2011 Energy Innovations, Inc. All rights reserved. Energy Innovations, the Energy Innovations logo, Sunflower, PowerPort, and the Sunflower logo are trademarks of Energy Innovations, Inc. All other trademarks and registered trademarks are the property of their respective owners. The information contained in this document is subject to change without notice. See engineering drawings for complete dimensions and installation information. Pricing, availability, technical details and feature sets subject to change without notice. PN: 101410

12.849505.9

11.250442.9

10.000393.7

2.01579.3

60°

2.50098.4

3.764148.2

1.66065.3

0.78731.0 0.566

22.3

Energy Innovations, based in San Diego, CA has pioneered the development of Highly Concentrated Photovoltaic (HCPV) systems that use concentration to substantially reduce the cost of solar energy. Since 2001, EI's mission has been to leverage the benefits of concentrated solar to achieve economic parity with fossil fuel generated power alternatives, making EI the first choice for alternative energy.

System-Level Specifications Solar Cell Characteristics

Cell Type Triple junction solar cell

Cooling System Passive convection cooling with aluminum heat-sink

Cell Size 30 mm2

Temperature coefficient -0.12% per °C

System Frame Set

HCPV module power rating (CRC) 300 WpDC (1)

Cell-units per module 30

Power per cell-unit 10 WpDC (1)

Efficiency 30%

Acceptance tracking angle 1.8°

Voc 91.1 V

Isc 4.1 A

Fuse rating 8.0 A

Total frame-set output power (CRC) 2.85 kWpDC

Number of HCPV modules per frame-set 10

Frame-set footprint 7.1 ft x 32.8 ft / 2.165 m x 10.0 m

Frame-set row spacing 7.1 ft / 2.165 m

Weight 2,200 lbs / 998 kg 3.78 per ft2 / 18.44 kg per m2

Source strings per frame-set 2

Source String DC output specifications

Voltage at MPP 410 VDC

Current at MPP 3.51 A

Fuse rating (per NEC §690) 6.0 A

Tracker

Sealed with ultra-low evaporating lubricant

Tracking algorithm Module level power maximization

Tracking accuracy (incl. Backlash) 0.3°

Operable global latitude range 45°S – 45°N

Range of motion Azimuth 160°E – 160°W from South Elevation 0° – 120° from horizon

Elevation drive motor Single stepper motor

Azimuth drive motor Single stepper motor

Installation & Environment

Ambient operating temperature -20°C to 50°C

Power connectivity Junction box at tracker frame

Inverter compatibility Compatible with standard UL 1741 Listed grid tied DC/AC inverter

Installation zoning

Wind Wind Exposure D - Max 90 mph (145 km/h) (ASCE 07-05/IBC/UBC/CBC)

Seismic Seismic Zone 4 (UBC/CBC)

Certification UL 8703 / IEC 62108

Controls Software & Status Monitoring Control Stow-mode for wind safety at 50 mph (80.5 km/h) Dust mitigation mode to minimize soiling Clean mode for easy access cleaning

Database SQLite; open source in public domain (http://www.sqlite.org/)

Monitoring information Module resolution status indication (DC) Module level tracking angle indication Frame-set level power measurement (DC) Total field power measurement (DC) Ambient air temperature Wind speed

PowerPortTM Carport

Power production per PowerPort™ section Compact parking stalls: 13.0 MWh/year (2)

Standard parking stalls: 16.2 MWh/year (2)

(1) Concentrator Reporting Conditions (+/-10%) - 900 W/m2 DNI, AM 1.5, 20ºC Ambient Temperature, 4 m/s wind speed (2) Based on a DNI of 6.9 kWh/m2/day (comparable with the DNI value for the Palm Springs area which is provided by National Renewable Energy Laboratory (NREL)

HCPV System HCPV Module Dimensions:Dimensions and mounting locations in millimeters [inches]

Dimensions in meters [inches]

Physical Specifications

118146.50

98738.861101

43.35

1366 53.78

373.814.72

M8 MOUNTING STUDS

115145.31

25610.08

1144.49

33.51.32

193.57.62

419.516.52

POWER CONNECTORS

HEAT SINK

Frame-set Dimensions:

12.849505.9

11.250442.9

10.000393.7

2.01579.3

60°

2.50098.4

3.764148.2

1.66065.3

0.78731.0 0.566

22.3

Highly Concentrated Photovoltaic (HCPV) systems that use concentration to substantially reduce the cost of solar energy. Since 2001, EI's mission has been to leverage the benefits of concentrated solar to achieve economic parity with fossil fuel generated power alternatives, making EI the first choice for alternative energy.

Fully Integrated, Versatile HCPV• New: 300 WpDC HCPV module• UL / IEC Certified

The Sunflower® control software provides closed-loop and open-loop tracking modes. Closed-loop is based on the individual module maximum solar power measurement with real-time feedback loop. Open-loop tracking is activated when a cloud shadows the Sunflower system. In this case, the feedback loop for tracking is based on continuous calibrated solar positioning data. As soon as this cloud shadowing disappears, the Sunflower modules will immediately produce power, maximizing system availability.

Standard 37.5 feet wide CPV carport sections for compact-car and standard-car parking stalls. Each carport section covers 4 to 5 parking stalls. No column intrusion in parking stalls.

UL 8703 IEC 62108