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Document NamePREPARED BY: Your Name, Your TitleDATE: 6TH MARCH 2015

Solar Analytics - Rooftop PV energy analytics

and fault diagnosis

Jonathon DoreHead of Data AnalyticsSolar Analytics

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Outline

• About Solar Analytics• Faults and case studies• Research projects

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Outline

• About Solar Analytics• Faults and case studies• Research projects

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Our Purpose

To maximise the value customers

receive from their solar energy system

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Coal is not good for humanity …

Pollutes atmosphere

Degrades land

Expensive

Doctors report that “coal is a health hazard from start to finish”

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… solar energy is the saviour …

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CheaperSimplerCleaner

... distributed solar is already colonising our homes …

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…but there’s a problem

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19% CAGR but industry has focussed on large scale monitoring

Source: GTM research, 2013

80

60

100

20

40

0

% of sites

Utility Commercial Residential

Monitored

Not monitored

Leading monitoring providers by revenue Global monitoring penetration

Company FocusSkytron Energy UtilityInAccess UtilityMeteoControl Utility/CommercialFirstSolar UtilityGreenPowerSolarLog

UtilityUtility/Commercial

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Features Residential Commercial Utility

Production Data

Performance Analysis

Fault Diagnosis

Current residential monitoring products are inadequate

Available with Solar AnalyticsReadily available

Not available

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Solar Analytics is already providing the solution

Works with any hardware …. or even none

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Providing useful information

How to fix your system

When to install batteries

How to save energy

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Providing detailed information

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Distributed via solar retailers

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Current Status: 506 Monitored Sites

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People• Stefan Jarnason, Co-founder and Managing Director

• Valantis Vais, Co-founder and Board Member

• Dr Renate Egan, Co-founder and Commercial Director

• Dr John Laird, Co-founder and Software Development Manager

• Dr Jonathon Dore, Head of Data Strategy & Analytics

+ 10 (software dev, design, sales, service, ops & analysis)

+ Co-op

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History

Envais Solar (Valantis)

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Outline

• About Solar Analytics• Faults and case studies• Research projects

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Breakdown of PV system failure

• 26% systems underperforming

• 12.1% annual fault rate

Solar Analytics Data

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Breakdown of PV system underperformance

Performance lessons from the real world, SunWiz 2012

• Earth leakage

• Soiling

• DC or AC Isolator

• Wiring or connectors

• Intermittent inverter issue

• Microcracks

• Hot spot

• Potential Induced Degradation

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Case Study 1

• 10kW system in Tasmania

• 7.5kW @ 32° NW and 2.5 kW @ 122 ° SW

Intermittent string loss

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Case Study 2

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Inverter 1 Inverter 2

Ene

rgy

(kW

h)

Daily Energy

Measured Production

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Case Study 2

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Inverter 1 Inverter 2

Ene

rgy

(kW

h)

Daily Energy

Expected Producction Measured Production

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Case Study 2

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65:

00 A

M

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Pow

er (k

W)

Average Power (1 hour resolution)

Inverter 1Inverter 2

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Case Study 2

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65:

00 A

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Pow

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Average Power (5 min resolution)

Inverter 1Inverter 2

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Case Study 2

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610

:00:

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M

10:1

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Volta

ge (V

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Pow

er (k

W)

Power and Voltage (5 sec ressolution)

Power (kW) Voltage (V)

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Case Study 3

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0 4 8 12 16 20 0 4 8 12 16 20 0 4 8 12 16 20 0 4 8 12 16 20

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2014

Pow

er (W

)

Sum of MeasuredSum of ExpectedSum of Shaded

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Case Study 3

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Ene

rgy

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Shaded

Hourly Measured

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Case Study 3

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2014

Pow

er (W

)

Sum of MeasuredSum of ExpectedSum of Shaded

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Case Study 3

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Outline

• About Solar Analytics• Faults and case studies• Research projects

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Research Projects

• Load disaggregation (Lachlan McDermid, UNSW)

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Research Projects

• PV generation forecasting (Johnathan Lee & Rachel Oh, UNSW)

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Research Projects

• PV generation forecasting (Bibek Joshi, UNSW)• Household consumption forecasting

(Baran Yildiz, UNSW)

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Proposed Project

• Hardware development• Home energy management• Battery monitoring and optimisation

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Future Projects

• ARC Linkage?• Solar Hot Water?• Machine Learning?• Grid Management?

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Our Purpose

To maximise the value customers

receive from their solar energy system