9096 enphase introduction
DESCRIPTION
Enphase Presentation at CCSETRANSCRIPT
Enphase Micro-inverter SystemEnphase Micro inverter System
Enphase Background
Founded in 2006
Located in Petaluma
Cross-disciplinary team
The Enphase Micro-Inverter
Definition: Micro-InverterA micro-inverter is a device that takes the DC output power of a single solar module and converts it into grid-compliant AC power.
AC Jack
DC CablesAC Cable
CSA-listed per UL1741CSA-listed per UL1741 15-Year Standard Warranty15-Year Standard Warranty15 Year Standard Warranty15 Year Standard Warranty
Key Elements
Enphase Micro-Inverter System:
Enphase Micro-Inverter
Envoy Energy Management Unit (EMU)Envoy Energy Management Unit (EMU)
Enlighten™ web based analytics and visualization
Enphase Micro-inverter System
Enphase Micro-inverter SystemValue Proposition
[ Productive ]
a ue opos t o
Energy Harvest Gains:[ Productive ] 5 - 25%
[ Reliable ] MTBF:
330 yearsSystem
ROI Gain:20 %20 %
[ Smart ] BOS & Labor Savings:
12 - 15%
Enphase Micro-inverter
One inverter per moduleInverter specifically matched to module configurationPer-module Maximum Power Point Tracking (MPPT)
Impact on ProductionCompounded IV CurveCompounded IV Curve
Impact on ProductionCompounded IV CurveCompounded IV Curve
Impact on Production – Shade
Impact on Production - Shade
Impact on Production - Orientation
Impact on ProductionModule MismatchModule Mismatch
Burst Mode
Low irradiance (e.g. beginning/end of day)
Micro-inverter stores energy until sufficient to “burst”
0 5 – 1 0% additional harvest0.5 – 1.0% additional harvest
Burst Mode
STORINGBURSTING BURSTING BURSTINGSTORING
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Energy Production ComparisonEnphase vs. Traditional Inverterp
Installation in Petaluma, CA24 Suntech 175W modules in checker board patternTraditional string inverter
– CEC efficiency – 94.5%yIndependent meter – 1%
Energy Production Gain
Enphase Energy Proprietary & Confidential [ 16 ]
14%
Energy Production ComparisonEnphase vs. Traditional Inverterp
Installation in Los Altos CAInstallation in Los Altos, CA54 BP 175W modules in parallel rowsTraditional string inverter
– CEC efficiency – 96%CEC efficiency 96%Independent meter – 1%
Energy Production Gain
Enphase Energy Proprietary & Confidential [ 17 ]
7%
Site #3: Energy Production Comparison Dust & Debris Comparison
Sample Data
No Shading
Installation in Auburn, CA60 165W modules
Maple Leaf Shading
Traditional string inverter– CEC efficiency – 96%
Independent meter – 1% accurateIncreased Energy:Increased Energy:
3%
Reliability - RESULTS
[ Reliable ]MTBF
330 years[ Reliable ]
System Availability
> 99.8%
Maximum System Availability
Increased Unit Reliability
330 year MTBF
Distributed thermal footprint
Operates at full power up to 65˚C (149˚F)
Rugged NEMA type 6 enclosure rating
No fans / moving parts
Increased System Availability
No single point of system failureg p y
Problems are isolated to a small fraction of array
Service becomes routine maintenance
System monitoring, advanced analytics, and automatic notifications
All these points lead to a 99.8% system availability, included with every system
Smart - Results
BOS & Labor Savings:
up to 15%up to 15%
[ Smart ]IRR Increase:
17%
Simplifies System Design and Management
Simplifies Design
No STRING Sizing C l l tiCalculations
Simplifies Design
Utilize all available roof spaceUtilize all available roof space
Fully utilize inverter
A bi i f d l i Any combination of module quantity, type, age
Simplifies System Design
No DC balance-of-system componentsy p
No DC combiners, recombiners, fuses, switches
Fewer AC inverter branch circuits than DC module Fewer AC inverter branch circuits than DC module strings
Results in less wire runsResults in less wire runs
Simplifies Design
Allows for small PV systems projectsy p j
System can be easily expanded– Planned future system expansionPlanned future system expansion– Underperforming systems
Simplifies Installation
Quickly mounts on the PV racking
Aesthetically ideal installation
Low voltage DC Low voltage DC
No large inverter to locate
No long wire runs from array to inverter
No custom MC extension cables required
No DC conduit runs from array to inverter
Use of Romex within structure - no conduits
M190 Micro-Inverter
60 & 72 cell module compatibility
CEC Efficiency = 95%
12 per carton – 288 per pallet
Polyurethane potted
190Wac output190Wac output
208 & 240V model
330 year MTBF
30% smaller
Smart Communications
Communications gatewayCommunications gateway
Plug & play
Power line communicationsPower-line communications
No communication wiring to invertersinverters
Micro-Inverters automatically begin reporting to Enlighten™
Immediate system verification during installation
Enlighten Smart MonitoringSmart Monitoring
Enphase Enlighten™ Enphase Enlighten
Web based monitoring and analysis y
Ensures maximum energy harvest
Enlighten Smart MonitoringSmart Monitoring
Immediate and historical t f t d system performance trends
Per module information
Di l l ti d il Displays real-time, daily, monthly and lifetime data
Errors and warning messages g gemailed to user
24/7 analysis alerts you of issues issues
Enphase is a qualified CSI PMRS data providerPMRS data provider
Enlighten Smart Monitoringg
Login: [email protected]: microinverter
Enphase Energy Proprietary & Confidential [ 32 ]
Entrust Program
15 Year Standard Warranty– Simple RMA process– Advanced troubleshooting through Enlighten– New inverters
System Up-time Guarantee– Requires Enlighten service
30 power production reimbursement– 30 power production reimbursement– Calculated from 30 day history
Reimbursement Program– $150 per inverter replacement (with Enlighten, $75 without)
Enphase Energy Proprietary & Confidential [ 33 ]
Enphase Micro-inverter SystemEnphase Micro inverter System