The power behind the panel

| Confidential 2

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.

Disclaimers

3

Company Overview

The Solar Challenge

Trina Solar Strategy and Roadmap

Sales and Marketing

Financial Performance

| Confidential 4

27.4

75.9

201.1

2006 2007 2008

● Founded in 1997, in Changzhou, China ● 201 MW module production in 2008● $831.9 millions of revenue in 2008● 4,800 employees worldwide ● Listed on the NYSE (under TSL ticker)● One single manufacturing campus

Our Advantage: Vertically Integrated Business Model

Company Snapshot

Module Shipments

Ingot Wafer Cell Module System

CAGR: +172%

| Confidential 5

Our Competitive Advantage

- Top Quality - > Ranked in the top 2 of 14 international solar module manufacturers in

“TUV Reinland's Energy Yield 2008” (period from June 1 to September 30, 2008)

> Working closely with our suppliers to ensure optimum reliability and quality

- Low Cost Structure - > Multicrystalline processing cost: $ 0.82/W in 4Q08> Efficient management of supply chain – just-in-time management

- Efficient Technology - > Cell efficiency (commercial production): up to 17.5% mono & 16.3% multi

> Goal: reach 18.5% mono and 17.5% multi within 1 year.

- Good Financial Position - > 2008: Gross Margin of 19.8% and total available credit line of $200M > Short term balances reduced by 14% from 3Q08 to $248.6M

DELIVER THE BEST VALUE TO OUR CUSTOMERS

| Confidential 6

Named fastest growing company in the Deloitte Technology Fast 50, China 2007

History & Milestones

IPO: 20/12/06

2006

Trina Solar Ltd.founded

Built first BIPV demo house in China

Built 39 PVPlants in Tibet

Launched Ingot manufacturing

Launched Wafer manufacturing

ISO 9002 StandardTrina Solar Research Center

Participated in first Renewable Energy Law in China

Launched Cell manufacturing

First commercial shipments

Reach 350MW capacity

Launch of BIPV and UMG-Si module lines

1999 2001 2003 2005 2006 2007 20081997 2009

Proud sponsor of Espanyol Barcelona

Cell Supply for Partnership

with Lisa Airplanes

| Confidential 7

Trina offices in 2008

Markets with sales: > 18 COUNTRIES

Barcelona

Munich

San Francisco

Changzhou (HQ)Shanghai

More than 12 nationalities from 4 different continents represented within Trina Solar

Investors from USA, Europe and Asia

Global Footprint

Germany, Spain, USA , Italy, Benelux, France, Greece, S. Africa, S. Korea, UK, Norway, Austria, Czech, Australia, Portugal, China, Mongolia,…

Listed on the NYSE

Seoul

Headquarter & production

| Confidential 8

Management Team

Jifan GaoChairman and

Chief Executive Officer

20+ years of experience in finance and accounting

Former Exec. VP of Finance of Spreadtrum (NASDAQ:SPRD)

Former Controller at one of the world's largest NASDAQ-listed

semiconductor assembly and testing companies

Terry Wang

Chief Financial Officer

25 years experience in supply chain management

Vice-President of Solectron Asia-Pacific Services

Previously Senior Executive of several global business units at Solectron

Sean Tzou

Chief Operation Officer

20+ years of management and entrepreneurial experience

Visionary founder of Trina Solar Ltd, in 1997

Standing Vice Chairman of the New Energy Chamber of Commerce of the

All-China Federation of Industry and Commerce

9

Company Overview

The Solar Challenge

Trina Solar Strategy and Roadmap

Sales and Marketing

Financial Performance

| Confidential 10

CHANGE NEEDED

What Change Do We Need?

A radical change is needed in the energy sector that: Is environmentally sustainable Is economically feasible Offers a rapid transition (10 – 20 years) Can be implemented immediately on a large scale Will offer long term solutions in the energy sector Can be implemented at the end-user level

We must all change

| Confidential 11

Today PV~0.5%

“Solar energy could make a significant contribution to

reducing CO2 emissions […] & would help avoid around 3Gigatonnes of CO2 up to 2030” *

*Source: Sustainability report, Sarasin Bank Nov. 2007** Based on 310MW of modules produced, for a house consumption of 5,500kWh/year

Electricity produced from Trina Solar modules over the last 4 years

could have power 78,000 houses**

40 min. of sun ~ 1 year of energy

Solar Is Part Of The Solution

64%

| Confidential 12

1,090

1,4501,750

2,830

5,900

600

2003 2004 2005 2006 2007 2008

Evolution of the Solar Demand

(MW)

Source: Marketbuzz 2009

PV Demand in 2008: 5.9GW

Evolution of the PV demand

Spain 2,463 France 104 China 35 Germany 1,855 CZ Republic 55 Africa 32 USA 357 Belgium 50 Australia 23 S. Korea 276 Portugal 50 Middle East 14 Italy 242 ROE 52 ROW 73 Japan 230 India 36 Total 5,947

Global PV Demand (in MW)

Spain41%

Germany31%

USA6%

S. Korea5%

Japan4%

France2%

Italy4%

ROE3%

ROW4%

13

Company Overview

The Solar Challenge

Trina Solar Strategy and Roadmap

Sales and Marketing

Financial Performance

| Confidential 14

Trina Solar Strategy

CostsSupply Chain Management

Effective supply chain management: just-in-time Improve materials utilization (ex: silicon)Developing global & local suppliers network Internal waste management policy

QualityReliability & technology

Internal reliability testing on module & materialsAccelerated Life Testing reliability tests – 25yr warranty Working closely with UL, ICIM, TUV and customersFull vertical integration to ensure top quality at each step

ServiceCustomer focus

organization

Local sales & technical team to support salesOn-line after sales service launchedDevelop global & diversified customer base to mitigate risk and reduce currency exposure

Cost

Service Quality

Growth

DELIVER THE BEST VALUE TO CUSTOMERS

& INVESTORS

| Confidential 15

160 – 240WpModule Power Range

Module Capacity & Production Growth Main facts

300

27.475

20175

150

350350

- 400

400+

2006 2007 2008 2009

CapacityProductionUnder Contract

Module Capacity Expansion

Wafer Thickness

Cell Efficiency (avg.)

Polysilicon Usage

Cost Structure

180 to 170µm

17.0% mono16.0% multi

6.3g/W in 4Q08

$0.82/W for multicrystalline

| Confidential 16

Integrated manufacturing capabilitiesallows better control of

cost quality yield product development cycle time

Trina Photovoltaic Park Facility Site Strategic location alongside manufacturing

campus Suppliers in neighbouring facilities bring

benefits including cost savings

East Campus (Phases 2 and 3) 500+MW production facility in a single

location to offer increased utilization and efficiency (Phase 2)

Increased degree of vertical integration and automation

Long-Term Expansion Plans

Phase 1

(2004-2008)

Trina PV Park Facility Site

Phase 2

(Current)Phase 3

| Confidential 17

Products And Certificates

Monocrystalline165 – 240 W

- Size: 72, 60 and 48 cells- High Efficiency Cells

- 5 years warranty for

manufacturing defects

- 10/25 years warranty for

90/80% power production

Multicrystalline200 – 230 W

- Size: 60 or 48 cells- 3 Bus Bar configuration

- 5 years warranty for

manufacturing defects

- 10/25 years warranty for

90/80% power production

- Size: 60 cells

- Upgraded Metallurgical

grade silicon

- 2 years warranty for

Manufacturing defects

- 10/20 years warranty for

90/80% power production

- 2 product types: glass-glass

laminated and integrated unit

glass

-Size: 72 and 60 cells

- minimizes power loss during

transmission

- Aesthetically pleasing

UMg-Si 190 – 220 W

BIPV 160 – 220 W

Main Product Lines Secondary Product Lines

18

Company Overview

The Solar Challenge

Trina Solar Strategy and Roadmap

Sales and Marketing

Financial Performance

| Confidential 19

Customer Focus

Wholesalers and

Distributors

PV System Integrators /

Large installers

Brand DevelopmentPV System Owners and Financiers

• Solid position in: Spain, Italy and Germany

• Strong development in: Benelux, France, Czech, Portugal

• Entry into: US, Korea, Greece & Australia

Geographical Distribution: 18 Countries

Large diversified customer base

Active medium-large size customers

Speed to market supported by integrated business model

Well developed channel strategy

Local focus to promote and manage brand

Manage Brand RecognitionIncreased Influence Over End Customer

Market Strategy

| Confidential 20

Italy

2007200775MW

Germany34%

Italy 19%

ROW6%

Spain 41%

Germany25%

20082008201.1 MW

Italy 20%

ROW5%

Spain 32%

Benelux14%

USA3%

2009 2009 estimateestimate

300+MW Pipeline

GermanySpain

Geographic Diversification

Italy 20- 25%

ROW10-5%

Spain 10-12%

Benelux10 -11%

Germany25- 30%

France5-8%

USA8 12%

| Confidential 21

Project InstallationsProject Installations

Spain – 26MW10th largest installations in the world 1

1. Source: pvresources.com, as of April 3, 20092. As of April 3, 2009

USA – 2.4MWAmerica’s largest single rooftop installation 2

Netherlands – 83kW2007 largest PV system in the Netherlands

Italy – 4.7MWLargest PV system in Italy 2

Germany – 3.3MWSaves 2,200 tons of CO2

a year

| Confidential 22

Proud sponsor ofRCD Espanyol BarcelonaSpanish premier ligue team

SponsoringInternational Exhibitions

Lisa Airplane sponsorship

International Exhibitions & Sponsorphips

Provide cells for the first airplane to fly around the world using only renewable energy

Europe, N. America, Australia, S. America, Middle-East

23

Company Overview

The Solar Challenge

Trina Solar Strategy and Roadmap

Sales and Marketing

Financial Performance

| Confidential 24

$27,275$114,500

$301,819

$831,901

2005 2006 2007 2008

Revenue

$6,289$30,050

$67,914

$164,442

2005 2006 2007 2008

Gross Profit

One of the strongest growth in the industry

$3,311$12,421

$34,876

$61,355

2005 2006 2007 2008

Net Income12.1% 10.8% 11.6%

$4,273$16,920

$35,987

$99,982

2005 2006 2007 2008

Operating Profit15.7% 14.8% 12.0%

Annual Financial Performance

CAGR: + 212%23.1% 26.2% 22.5% 19.8%

12.0% 7.4%

| Confidential 25

San Francisco

Thank you

R. Jim DayDirector Sales & MarketingNorth America

Phone: 760-632-8427Email: jim.day@trinasolar.com

The power behind the panel