Bifacial PERCBetter LCOE Solution
Hongbin Fang
Director of Product Marketing
Denver, September 10, 2018
Mono PERC and Bifacial PERC
ARC SiNx
Electrode
N+ emitter
Rear passivation
Al fingers
ARC SiNx
Electrode
N+ emitter
Rear passivation
Rear AIBSFPERC
Bifacial PERC
P-type Si
Bifacial Technology
Mono-facial to Bifacial power generation
⚫ LONGi Solar Bifacial PERC Hi-MO2 cell and
module bifaciality >75%
⚫ Significant increase on energy yield
⚫ Double glass lamination, 30 year power
degradation warranty
Product Feature
Conventional PERC cell structure Bifacial PERC cell structure
Application⚫ Utility
⚫ Commercial rooftop and carport
Performance and cost⚫ Front side efficiency equivalent to conventional PERC
⚫ Manufacturing cost comparable to conventional PERC
⚫ Bifacial light harvesting, 8%-25% power gain from rear side
10Y
Module Power Degradation Warranty
WARRANTY
MATERIAL& CRAFTWORK
10YPOWER-OUTPUT
>93.95%
30YPOWER-OUTPUT
>84.95%
Optimize System Design toImprove Bifacial Energy Yield
Mono facial module Bifacial module
Direct sunlight Direct sunlight + Reflection + Scattered light
Backside Energy Yield
System Design with Bifacial Module
Backside Energy Yield: Albedo
Bifacial gain improves with increasing ground Albedo
Backside Energy Yield: Albedo and Height
⚫ Bifacial module backside energy
yield improves with increasing
Albedo (background reflectivity).
Selecting site with more reflective
background can improve overall
system energy yield
⚫ Increasing module height
improves backside energy yield,
as well as backside irradiance
uniformity
⚫ Module height (clearance from
ground) of 1m and above is
recommendedIrradiance at backside - Clearance 8 cm Irradiance at backside - Clearance 108 cm
Bifacial PERC Module
Field Monitoring Data
⚫ Bifacial PERC Capacity 2.8kw, multi capacity 2.7kw, project located in Taizhou test site (N32.5°/ E119.9°), China
⚫ Fixed tilt configuration
⚫ With same background condition, increasing backside energy yield with increasing racking height
Data from Taizhou test site (N32.5°/ E119.9°)
13.5%
20.10%
23.70%
0%
5%
10%
15%
20%
25%
2
3
4
5
Multi Bifacial/TPO/1m Bifacial/TPO/1.5m Bifacial/TPO/2m
Dail
y e
nerg
y y
ield
(kW
h/k
W)
Daily energy yield (kWh/kW) Energy yield gain
0%
2%
4%
6%
8%
10%
12%
14%
0
2
4
6
8
10
12
14
En
erg
y y
ield(
kW
h/W
p)
Bifacial PERC Std Mono Gain (%)
⚫ Bifacial PERC Capacity 18.9kw, std. mono capacity 18.25kw, project located in Pucheng, Shaanxi (N34.97°/E109.59°), China
⚫ Fixed tilt configuration (15 degree), distance to ground 1.6m
⚫ Three month monitoring data showed 11.27% energy yield from backside
+11.27%
Bifacial PERC Module
Field Monitoring Data
Kubuqi Bifacial Field Data
⚫ Bifacial PERC project (336kw on single axis tracker) in Kubuchi, Inner Mongolia (N45.36°/E118.36°), China
⚫ 1Yr energy yield by Bifacial module + tracker is 26.7% higher than Multi module/fixed tilt and 15.9% higher than Multi/tracker
+15.9%
Bifacial PERC Module
Field Monitoring Data
Higher Energy Yield
with PERC and Bifacial PERC
1200
1300
1400
1500
1600
1700
1800
1900
2000
Multi Mono PERC Tracker+Mono PERC Tracker+Bifacial PERC
An
nu
al e
ne
rgy y
ield
(kw
h/k
w)
2-4%imprv’t
10-15%imprv’t
10-15%imprv’t
PERC Efficiency Improvement Potential
23.60%Dec. 2017
333.7W / 20.41%Jan. 2018
22.41%82.15%
( Bifaciality )
22.71%
23.68%Dec. 2017
360.3W(Half-cut) Apr. 2018
Bifacial PERC CellPERC Cell PERC Module
2017.10 2017.11 2017.12 2018.01 2018.04
Cell Efficiency Cell Efficiency Module Power
Bifacial PERC Technology Roadmap
365
375380
385
375
385
390395
395400
405
2018 2019 2020 2021
Bifacial PERC_Full cell Bifacial PERC_Half cell Bifacial PERC_Shingling
Technology Strength Through Consistent R&D Investment
$379M2012-2017 accumulated
12.924
39.1 46
86.6
176
4.90%
6.80% 6.90%
5% 4.90%
6.77%
0%
1%
2%
3%
4%
5%
6%
7%
8%
2012 2013 2014 2015 2016 2017
R&D investment per year
R&D ($M) % of revenue
R&D spending
5-7%(of revenue)
260 patents awarded
460 staff member
LONGi Solar:
Feb. 2000 Apr. 2012 Nov. 2014 2020
Sept. 2007 Oct. 2013 2018
Ningxia 1000T mono ingot fab completed;LONGi enters PV materials business
Delivered 1GW mono wafer;Became the largest mono wafer supplier globally
Ingot / Wafer 28GW
Module 12GW
LONGi foundedIPO on Shanghai
Stock Exchange
LERRI acquired; expanding into solar cell/module business
Dedicated in Mono 18 years
Ingot / Wafer 45GW
Diamond Wire Slicing Technology
$3BAnnual savings using
DWS technology
Wafer Cost Reduction
$0.16/pcs
Non-Si mono wafer cost
by 2020
Largest Mono Wafer and Module Manufacturer
MonoWafer
Global market share by LONGi
MonoModule
35% 16%
50.0%
44.6%47.4%
56.7%
2014 2015 2016 2017
566 945
1,833
2,602
2014 2015 2016 2017
992 1,623
3,047
5,226
2014 2015 2016 2017
46 80
224
567
96186
459
840
2014 2015 2016 2017
Strong Financial Performance
Market Cap
~US$7Bas of 6/30/2018
2017
+72%
+42%
+130%
57%
Total assets (Million USD)
Revenue (Million USD) Debt Ratio
Net Profit (Million USD)
Gross Profit (Million USD)
Financial Health
Major PV module manufacturers
PHOTON Consulting, LLC
PV Triathlon Report in Nov, 2017
1.6
1.4
1.1
0.80.7
0.6 0.60.5
0.30.2 0.2
0.10
-0.2
-0.4-0.5 -0.5
-0.6
-1.4
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
1ST Quartile 2nd Quartile 3rd Quartile 4th Quartile
Strong financial performance recognized by industry:
– Financial health No.1
– Profitability and cost leadership top 3
– Overall score top 5
Financial Health No. 1 among all PV Manufacturers
Green Manufacturing
Thank You
for Your Attention