9096 enphase introduction

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: demo@enphaseenergy.comPassword: 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