Panasonic HITTM solar cell

Panasonic Electrical Works Europe AGSeptember, 2019

Agenda

1. Panasonic HIT (Hetero junction cell)

2. Product reliability of Panasonic HITTM

Histrory in Photovoltaic

Started R&D for amorphous solar cells

World’s first commercialization of amorphous solar cells

Started R&D of heterojunction technology

Started mass-production and sales of HITTM

1975

1980

1990

1997

2012

2013

2014

Panasonic receives prestigious IEEE award for HITTM

New lab. record for cell efficiency: 24.7% =World No.1

Panasonic Energy Malaysia Sdn. Bhd. starts mass production

New lab. record for cell efficiency: 25.6%=World No.1

Accumulated cell production reaches 1 billion.

2015 40th years anniversary of Solar Business

44

ye

ars

for S

ola

r bu

sin

es

s

29year fo

r Hete

roju

nctio

n te

ch

no

log

y

22years

for H

ITT

M

1992 First installation of an on-grid PV system for

residential use in Japan

2017 20th years anniversary of HIT™ mass-production

Launching Solar panel HITTM N330/N325IEEE Award

2019 Debut of

2018Panasonic achieves “Top Performer”-ranking in the 2018

DNV GL PV Module Reliability Scorecard

Panasonic Heterojunction: Superior Crystalline Cell Technology

2x electrical

fields

The benefits:

✓ Higher voltage

✓ Better temperature performance

✓ Better light sensitivity

✓ More flexible cell (less micro-cracks)

✓ More reliable bus-bar connections

✓ Lower risk of hot spots

✓ No LID or PID

✓ Lower long-term degradation

N-Type Silicon Wafer 2 P/N Junctions Clean Junction a-Si5-in cell /

3x silver tab

Low-temp bus-bar

interconnection

Pyramidal cell /

Bus-bar structure

Symmertrical

sandwich structure

-0.258%/°C

Panasonic HIT® Photovoltaic Module: Better Yield

PV system output during one day

Osaka 8.July.’13 Faced due South Tilt angle 30゜

Temperature vs. efficiency

High output even during high temperature (summer etc.,)

High performance at high temperature

High Yield Energy

HIT has superior

temperature co-efficiency

1.1

1.0

0.9

0.8

0.7

Module Temperature （℃）

6555453525

Polycrystalline

Norm

aliz

ed E

ffic

iency

HITTM

Polycrystalline

MAX 13％Norm

aliz

ed E

ffic

iency

[W

/W

p]

1.0

06:00 12:00 18:00

High Output in day time

HITTMModule temperature : around 82℃

70

Temperature coefficient;

5

Panasonic HIT® Photovoltaic Module: 2018 Line Up

N250 N340

N330

Slim: Powerful:

1.5

9 m

(-9

.5 c

m v

s P

ER

T)

1.05 m0.8 m

N335

N325

KURO

Black:

N300

Shorter:

1.4

6

m

module

formats for MORE POWER ON ANY ROOF!

35 mm frame (SJ25)

15 kg

40 mod/PAL

L=2xW

40 mm frame (SJ53)

5400 Pa

48 mod/PAL

Short side clamping

40 mm frame (KJ01)

5400 Pa

48 mod/PAL

Short side clamping

35 mm frame (SJ46)

4 rows portrait in 6 m roof

40 mod/PAL

Short side clamping

6

Panasonic severe testing standard 7

7

・20+ original tests, in addition to international standard tests (IEC)・IEC x 3 severity tested to ensure high reliability ・PID Free, LID Free・long-term durability test and salt-mist corrosion test conducted

by TUV

Proven

high reliability

PanasonicOriginal Test

InternationalStandard

・IEC61215 Module reliability test

・IEC61730 Module safety test

Cold heat shock test Light irradiation test Limit weight resistance test

Check long term reliability through more than 20 original tests such as reliability test under severe temperature conditions used In JIS (Japanese Industrial Standards conforming to IEC).

▼Original tests (example)

Panasonic severe testing standard 8

■Panasonic Original Tests

[2] Cold Heat Shock Test

Not only the cycle time is

shorter than IEC

requirement but also

uses higher temperature

to test durability under

severe condition. Long

term reliability certified by

adopting longer test run

time.

[1] Severe Thermal Cycle Test

A severe environmental test which simulates

the thermal stresses on solar panel caused by

the changes of extreme temperature.[-40°C to

+80°C]. To ensure extreme reliability, cycle time

is triple times of IEC requirement.200 cycle

Thermal cycle test

HIT IEC

X3 severity

400 cycle

600 cycle

Panasonic HIT® Photovoltaic Module: Superior Quality Assurance

Damp Heat Internal Test

(IEC61215)

Thermal Cycle Internal Test

(IEC61215)

Electrode disconnection

vs PERC vs PERT MWR

PERT with MWR

10

70%

80%

90%

100%

0 200 400 600 800

Pm

ax[%

]

The number of cycles [ Times ]

IEC 61215 Thermal Cycle Test Result

HIT

Brand A

Approx.

23%

IEC x 3IEC x 2IEC x 1

HIT performs approximately 23% better than brand A after IEC x 3 cycles.

Panasonic stable tab connection technology realizes high durability against

temperature changes.

Cell

Panasonic’s low temperature tabbing process

minimizes stresses on tab and keeps high

durability against changes in temperature

Busbar

electrode

Tab

Original Interconnecting

technology

Finger

electrode

Panasonic

Stable Tab Connection

No tab disconnection & No delamination

= More reliability

Reliability test result: Thermal cycle test (Internal)

Panasonic Eco Solutions Europe, PEWEU AG

5400 Pa snow/wind load approved ONLY after passed micro-crack EL-Test

HIT® vs Brand A (PERT high-eff)* & vs Brand B (PERC)*

*: Brand A: PERT Mono-Si feat. 12-wire cell connections; both Brand A and Brand B featuring cells

of at least 6 inch of diagonal

5400 Pa loading

sequence:

0 to 5400 Pa

1 hour at 5400 Pa

5400 Pa to 0 Pa

Panasonic HIT® Brand A (PERT hi-eff) Brand B (PERC)

HIT®: better mechanical resistance thanks to

new frame design and special cell features:

– Smaller, more flexible cell

– Low-temperature cell-interconnection tech. (~ 200/500 °C lower!)

Mechanical load testing by

Florida Solar Energy Center 2017

11Reliability test result: Mechanical load test

Panasonic Eco Solutions Europe, PEWEU AG

Water Drainagy at frames 12

→Water flashes out from the drain

corner

→Water stays in corner

→Only small stains are left →Stains remain on wide areas

Right after

water

flush

After

drying

Panasonic HIT™ Conventional crystalline

*Tested at tilt angle of 5 degree

Panasonic Eco Solutions Europe, PEWEU AG

13

Model:HIP-G751B1 (167W)

・Number of modules: 20pcs, System size: 3.34KW

[Installation: July, 2002]

Model: HIP-180BE

Number of modules: 10pcs, System size 1.8kW [installation：March, 2004 ]

United Kingdom

14YEARS

12YEARS

0

500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

4.500

1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th

[kWh/year]

[kWh/year]

0

200

400

600

800

1000

1200

1400

1600

1800

1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th

JAPAN

Dotted line indicates the simulation by PVGIS

Reliability backed by proof:

Panasonic Eco Solutions Europe, PEWEU AG

14

Model:HIP-205NHE1

・Number of modules: 46pcs, System size: 9.43KW

[Installation: 2005]

Model: HIP-205NKHE1

Number of modules: 168pcs, System size 34.4kW [installation：Nov, 2005]

12YEARS

JAPAN11YEARS

0

2000

4000

6000

8000

10000

12000

1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th

0

4000

8000

12000

16000

20000

24000

28000

32000

36000

40000

44000

1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th

11YEARS

[kWh/year]

[kWh/year]

Germany

Germany

Dotted line indicates the simulation by PVGIS

[kWh/year]

Reliability backed by proof:

✓ Fully backed by Panasonic

✓ Transport cost coverage

✓ HANDLING COST SUPPORT

years

Product Guarantee

Linear Output Guarantee

(86.2%)

0.0045%public failure rate*

Approx.

*as of April 2019 from more than 4 million modules sold in Europe since 2003

Panasonic HIT® Photovoltaic Module: Superior Guarantee

International Standards

Panasonic Internal Tests (3xIEC-Norms)

IEC 61215 / IEC 61730 module reliability and safety tests,

PID,JISQ8901, salt corrosion test (level 6), hail protection

class 3, fire resistance (class UNO, UNI 9177 Italy)

Over 20 internal extra reliability tests under toughest

conditions as defined

by Japanese Industrial Standards, JIS.

15

Thank you for your attention!