The Optimized Solution July 2013

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Disclaimers & Safe Harbor Statement

This presentation does not constitute an offer to sell or issue or the solicitation of an offer to buy or acquire securities of Trina Solar Limited (the “Company”) in any jurisdiction or an inducement to enter into investment activity, nor may it or any part of it form the basis of or be relied on in connection with any contract or commitment whatsoever.

The information herein has been prepared by the Company solely for use in this presentation. No representation, warranty or undertaking, express or implied, is made as to, and no reliance should be placed on, the fairness, accuracy, completeness or correctness of the information or the opinions contained herein. None of the Company or any of its affiliates, advisors or representatives will be liable (in negligence or otherwise) for any loss howsoever arising from any use of this presentation or its contents or otherwise arising in connection with the presentation. This announcement contains forward-looking statements within the meaning of the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. All statements other than statements of historical fact in this announcement are forward-looking statements, including but not limited to, the Company's ability to raise additional capital to finance the Company's activities; the effectiveness, profitability and marketability of its products; the future trading of the securities of the Company; the period of time for which the Company's current liquidity will enable the Company to fund its operations; general economic and business conditions; the volatility of the Company's operating results and financial condition; and other risks detailed in the Company's filings with the Securities and Exchange Commission. These forward-looking statements involve known and unknown risks and uncertainties and are based on current expectations, assumptions, estimates and projections about the Company and the industry in which the Company operates. The Company undertakes no obligation to update forward-looking statements to reflect subsequent occurring events or circumstances, or to changes in its expectations, except as may be required by law. Although the Company believes that the expectations expressed in these forward looking statements are reasonable, it cannot assure you that such expectations will turn out to be correct, and the Company cautions investors that actual results may differ materially from the anticipated results.

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Agenda

• Trinasmart Overview

• Trinasmart Monitoring Demo

• Trinasmart Design

• Trinasmart Installation

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- The Smart Module has arrived

• Fast Installation – No extra boxes, no labor, no shipping, lower cost

• 30% Longer Strings – Lower Voc, lowest BOS cost

• Bankable Warranty – All the benefits with Trina Solar’s bankability

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Working Smarter Without Making it Harder

• Fully Integrated – Integrated into the Junction Box of

Trina Modules in the factory

• No Labor – Install solar modules the same way as

normal, no extra wiring, no grounding

• No Shipping – No extra shipping and logistics

No Extra Boxes!!

Microinverters & Optimizers

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Lower Cost, Faster BOS

• Fewer Components – 30% fewer strings reduces the number of

combiners, fuses, disconnects, home runs, etc.

• Faster Installation – Less components to install, faster install times

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Trinasmart – The First Bankable Smart Module

Backed By Trina’s Standard Warranty

• 10 year product warranty

• 25 year linear power warranty

And Your Inverter of Choice

• Works with ALL inverters worldwide

• Letters of warranty exchanged with ALL

Tier 1 inverter companies

Over 1,200 inverter types operating successfully in the field with Trinasmart equipment

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Trinasmart compares favorably to Microinverters

Microinverters produce excessive heat Trinasmart has 10x fewer components

• Reliable – Trinasmart has 10x fewer components and no electrolytics

• Low Cost – Trinasmart is a fraction of the cost of microinverters

• Efficient – Trinasmart (99.6% CEC efficiency) compared to 96%

• Easy – Faster installation, no boxes, no trunk cables, no grounding

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The Trinasmart System

Trinasmart modules communicate wirelessly through the gateway to the MMU, allowing users to monitor and optimize system performance in real time

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The Benefits of Trinasmart

• Voc Control – Lower Voc, & No temp. coefficient

• Advanced O&M – Panel-level monitoring

• Impedance Matching – Panel-level MPPT with industry leading efficiency and reliability

• Safety – Panel-level disconnect, compatible for NEC 2014

Trina’s Full Portfolio:

• PCO5A.20, PAO5.28, PA14.20

• Available with Trinamount

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Smart Curve Technology

Optimized BOS, 30% Longer Strings

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Patented Smart Curve™ Technology

• Regulates Voc – Reduces the maximum voltage of a solar panel

• Temperature – Max voltage is fixed and is not dependent on temperature

• Fewer Components – 30% fewer strings reduces the number of combiners, fuses, disconnects, home runs, etc.

• Faster Installation – Less components to install, faster install times

• Patented – Patent granted

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Trinasmart IV Curve

Max Voltage

Traditional Module

Voltage

Cu

rren

t

Max Voltage

Voltage

Cu

rren

t

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Benefits

Smart Curve Changes the Electrical Spec of Modules

• Programmed at factory • Not temperature dependent

• 30% longer strings • 0.4% lower I2R losses • Fewer BOS components • More efficient inverters

Electrical Specifications Max Voltage

Certification • UL1741, EN62109-1 • TUV, CSA spec approved • Compliant with IEC and NEC

String Length

Trinasmart IV Curve

TSM-PA05

TSM-PA05.28

TSM-PA14

TSM-PA14.20

Vmp 29.7 29.7 36.1 36.1

Voc 37.3 32.5 44.9 39.2

V (-10C) 41.0 32.5 49.4 39.2

600V String Length 14 18 12 15

1kV String Length 24 30 20 27

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Smart Curve Enables Significant BOS Savings

Voc is clamped to a lower voltage than a traditional module

Isc Imp

Voc Vmp

Traditional Module

Reduced EBOS • Fewer home-runs, combiners,

disconnects • Less copper required per

installed kW

Reduced labor cost • Shorter installation time

Improved harvest • I2R losses are reduced, resulting

in about 0.4% more energy harvested

• Inverters operate at a higher efficiency point

Reduced Voc

String Capacity

30% more modules fit in a string within max safety voltages

…

…

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Smart Module Optimized Inverters

• Inverters designed to work with Smart Curve

• Narrower DC input window

• Re-rate inverters to a higher power

• Ex: Kaco inverter re-rated from 33kW to 50kW

• $0.04/W savings

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Precise Operations and Maintenance

Panel-Level Monitoring

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More efficient O&M

Monitor panel-level data in

real time

Diagnose problems remotely

Diagnose problems accurately

For a Demo Please Visit:

http://www.trinasmart.com Trinasmart Monitoring Is Free

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O&M Case Study – Sasonbi Solar

“A month after installing our Trinasmart system we got an alert in our email notifying us that there was a “Low PV string power.” I went to the portal and I noticed immediately one string was blackened and the voltages were all zero for all the panels in that string. Yet all the other panels were delivering throughput within expectations. So we reckoned right away that the problem was with that specific string only. Early the following morning, we inspected and found out that the fuse for that string was broken. We were able to fix it within a day of the incident thanks to the Trinasmart monitoring. The e-mail notification from Trina was such a great help in knowing the situation almost immediately.” - Dante Briones, CEO Sasonbi Solar

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Spot Problems Quickly and Efficiently

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Maximized Energy Harvest

Impedance Matching Technology

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Patented Impedance Matching Technology

• Efficient – 99.6% CEC weighted efficiency

• Lower Part Count – 50 components, no electrolytics, high reliability

• Energy Harvest – 2 times more energy from unshaded arrays compared to ALL other technologies

• Cost – Lowest cost solution

Please see the Trinasmart Impedance Matching whitepaper for more info.

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Trinasmart Reliability

• Extensive testing by Trina and third

party engineering

• BEW bankability report

• Only solution to fail “benign”

• Field replaceable junction box

• MTBF >1000 years

• Electronics encapsulated in potting

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Photon International Testing of Trinasmart

Source: Photon International, November 2010. Test system is 2.5kW array using Trina 180W modules

3.2%

36.80%

20.90%

0.0%

5.0%

10.0%

15.0%

20.0%

25.0%

30.0%

35.0%

40.0%

Unshaded Horizontal Pole

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Trinasmart Gets You More Watts From Every Bin

• Modules in the factory are binned to a certain accuracy (generally +3%)

• An equal number of +3% modules will be found in a bin as 0% modules, but when strung together they all act like 0% modules

• With Trinasmart a +3% module will not get dragged down by a 0% module

• A +3% bin will effectively give the customer an additional 1.5% more watts

+ 3%

+1.5% Watts =

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• Trinasmart can increase ground coverage ratio without sacrificing energy yield

• Inter-row shading is mitigated by panel-level MPPT

• In general modules can be placed 4% closer without compromising energy yield

Ground Coverage

Source: Folsom Labs, Tigo Energy analysis

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Maximum Energy Harvest

Shade Affects 38 modules more than 50% Shade Affects 9 modules more than 50%

Traditional System

Causes of mismatch • Module output is limited

by the lowest string amperage

• One underperforming module can bring down an entire string

• Allows each module to operate independently

• The more mismatch in a system the more extra energy delivered relative to a traditional array

Shading ‐ Shaded modules drag

down others

Output variance ‐ In each power bin, a

+0W module will drag down by a +5W module

Degradation variance ‐ Faster degrading

modules drag down others as they age

Mismatch drags down a string Trinasmart corrects mismatch

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Design Flexibility

Different roof angles on the same inverter MPPT

Inter-row shading is mitigated by panel-level MPPT

Maximum roof coverage on non-ideal sites

Uneven strings in parallel

Closer module placement without compromising energy yield

Rooftops Ground mount

Faster installation and smaller margin for error

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Clouds

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Trinasmart Reduces Age-Induced Energy Loss

0%

5%

10%

15%

20%

25%

30%

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Year

Losses from mean-shift degradation

Source: Tigo Energy analysis, “Outdoor PV Degradation Comparison”. D.C. Jordan, R.M. Smith, C.R. Osterwald, E. Gelak, and S.R. Kurtz. NREL Conference Paper CP-5200-47704

Losses from variable component

• Module degradation is not uniform

• This creates module mismatch that grows over time: approximately 0.75% increase in standard deviation each year

• In year 5, this represents 1-2% additional losses, which grow to ~4% in year 10 and 12% in year 20

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Energy Harvest Case Study – Tucson Electric Power

Location: Tucson, Arizona

System 1: 105kW w/ Tigo

System 2: 108kW w/o Tigo

Trinasmart’s technology was retrofitted onto a 12 year old system operated by Tucson Electric Power. Over the course of a one month trial comparing two systems next to one another the Impedance Matching Technology yielded 9.7% more energy per kW as compared to the normal array. “Having Tigo Energy optimizers installed

on half the array allowed us a unique view into system performance and how optimizers have been able to change the performance of the array. The difference in Performance of these side-by-side and nearly identical arrays was striking.”

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Uneven Terrain

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Safe Solar

Panel-Level Disconnect

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Trinasmart – The Safest Solar Available

Module level arc fault detection and switch off

Module-level disconnect for maintenance and emergency response

Automatically when the electricity supply is switched off Or manual via the PV Safe button or remotely via the web

Low-voltage shutoff mode NEC 2014 fire code compliant

Expected Draft in October 2013 NEC 2014 article 690.12 (Expected 10/2013)

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Safety Funtionality

Note: Trinasmart can deactivate modules for safety by:

1. Pressing the red button on the MMU

2. Turning off the AC breaker to a home (Trinasmart modules sense that the inverter and MMU is down and automatically switch off)

3. Manually turning it off online on the Trinasmart software

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Trinasmart System

Lower the LCOE of Solar

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Trinasmart Value

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How to Buy

Trinasmart is certified and shipping today:

For Pricing and Lead Time Please Contact: – Your Local Trina Representative

– Or email us at: USA@Trinasolar.com

www.trinasolar.com

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