A track record of corporate social responsibility

Sustainability Electricity Water GHG Emissions
#1 21.6% 36.8% 24.6%
Rank in the Silicon Valley Toxics Coalition (SVTC) Solar Scorecard 2014 Reduction in electricity use per MW produced (2010-2015) Reduction in water use per MW produced (2010 -2015) Greenhouse Gas Emissions (2010-2015)

Commitment to Responsible Manufacturing

Trina Solar is committed to providing cleaner energy solutions. As we work to improve the technology and quality of our products we make every effort to protect the health and safety of our employees and the local environment.

Sustainable Manufacturing

We carefully monitor our annual manufacturing emissions and the carbon footprint of our product. As we reduce our manufacturing resource usage, annual audits by the British Standards Institute (BSI) help us to reliably track and report our progress. In the last three years, we have reduced both our electricity and water consumption by over 60% each.

Third party institutes have recognized this commitment to our workers, community and environment. Trina Solar has been ranked No. 1 globally for environmental and social performance in the Silicon Valley Toxics Coalition's (SVTC) 2014 Solar Scorecard. The Solar Scorecard evaluates factors such as extended producer responsibility and takeback, supply chain monitoring, green jobs, chemical-use and product life cycle analysis and disclosure. We are also a member of PV Cycle, to ensure that our products are recycled at the end of their lifetime.

Highly efficient cell production line Highly efficient cell production line
Carbon Footprint Reduction
  • Switching to low-consumption lights
  • Shortening cycle time for selected machines
  • Water and waste recycling programs
  • PV Park & Vertically Integrated manufacturing reduce logistics pollution
The British Standards Institution (BSI) verified Trina's low carbon footprint of 678.73 kg of CO2 equivalent per kilowatt of TSM-PC05A PV Module for the entire module manufacturing process from raw material acquisition to packaging as environmentally friendly according to PAS 2050 and ISO 14067 standards
Electricity Reduction
  • Recovering and reusing residual heat from our silicon plant with cooling water
  • Selective use of refrigeration units and air-cooled heat pumps
  • Collecting and reusing reverse osmosis concentrated water
  • Reducing compressed dry air (CDA) system regeneration time
Electricity Consumption per MW Module Production(MWH/MW)
Note: The increase in 2015 is due to the automation upgrade projects in the factory.
Water Reduction
  • Building a waste water treatment plant to treat and recycle campus water
  • Careful measurement of water use
  • Maximizing the use of recycled water and used water
Water Consumption per MW Module Production (T/MW)
GHG Emissions
  • Trina Solar has conducted ISO14064 Greenhouse Gas Emission Data verification for three consecutive years and put substantial efforts in establishing a systematic methodology to quantify and report GHG emissions.
  • Trina Solar has made consecutive efforts in establishing a systematic methodology to quantify, report and disclose GHG emissions, which helps the company achieve pollution reduction target and also foster employees’ awareness of using natural resources in more efficient ways.The CO2 emission per MW module production in 2014 reduced by 43.1% compared with that in 2010.
Greenhouse Gas Emissions (2011-2015)
(Tons of CO2-e/MW)

Air Emissions
  • Trina Solar has built a range of scrubbers, such as acidic/caustic scrubbers and organic scrubbers to remove pollutants from air emissions.
Nitric Oxide (NOX) emission concentration in 2012(mg/m3)

Nitric Oxide (NOX) emission rate in 2012(kg/h)
Wastewater Discharge
  • Implementing the projects of collection and reuse of RO (reverse osmosis) rejected water, HVAC condensate water, and even the preliminary treated waste water;The water is used for washing, heating, cooling, cleaning, and gardening etc.
  • Working together with Wuxi Depple Water Investment to build a new water recycling plant. The plant uses advanced dual-membrane (ultra- ltration and reverse osmosis) technology to treat industrial waste water created during the manufacturing process. The treated water was sent back to Trina Solar as supplementary raw water supply.
Wastewater Discharge Volume per MW Module Production (Tones/MW)
Chemical Consumption Main chemical consumption per MW Module Production (m3/MW)

CSR Facts and Figures


Sustainable Industry Leadership
No. 1 company in Silicon Valley Toxics Coalition Solar Scorecard 2014 ranking

Measured by:
- Extended producer responsibility
- Emissions transparency
- Chemical reduction plan
- Worker rights, health and safety
- Energy and GHGS


End of Life Module Recycling
- Full member of PV Cycle since March 2010

- Partnerships with UN Environment Program and Columbia University's Earth Institute

- ISO 14001 (Environmental management)
- ISO 14046 (GHG Emissions Reporting)
- OHSAS18001 Certificate

Empowering our Communities

Solar photovoltaics present an affordable, reliable and clean way to generate needed electricity for communities off of the energy grid and supplement existing, more expensive electricity generation for those on the grid. As the industry continues to make great progress in improving product efficiencies and bringing down the cost of solar energy, its ability and responsibility to affect positive change in the world grows. Trina Solar is working hard to lead the industry in empowering individuals and their communities.

Recent Community Partnerships

Los Nietos School, CA, USA
Cottages Schools Project, CO, USA
Nanjing University, Nanjing, China
Habitat for Humanity, TX, USA
Clinton Foundation, Haiti
Waves for Water, Haiti
American Lung Association, CA, USA
Dempsey Care Hospital, ME, USA
Ukwe Health Clinic, Malawi

Trina Solar does not use prison labor during any aspect of the product life cycle, including end-of-life recycling and disposal.

Chemical Use, Emissions and Environmental Impact

We are committed to delivering a cleaner, smarter energy. Our accredited third party partners, such as the British Standards Institute, help us to measure and confirm our performance on key metrics of sustainable manufacturing. These reports help us to set the right goals, track our progress, and stay accountable to our employees, communities and customers.

Summary of Emissions at Each Stage of Production

Polysilicon Wafer Cell Module
Greenhouse gases/CO2 Emissions
Perfluorocarbons, SF6/NF3, CHF3, CF4, C2F6
Air emissions: SOx, NOx, VOCs, PM10
Domestic waste landfill disposal by weight
Hazardous waste released and transferred 
Total heavy metal emissions
Other chemical waste (HCl, HF, Cl2)

Note: Trina Solar does not dispose our hazardous waste directly into landfills; we incinerate hazardous waste and then dispose of ashes in landfills. We are proud that our monitoring reports consistently find our heavy metal emissions to be below detection limits.

Environmental Releases (2014)

Direct Energy Consumption
Diesel 0.03
Gasoline 0.02
Natural Gas 989.57
Indirect Energy Consumption Electricity (MWH/yr*MW) 218.84

Source: Verified by British Standards Institution (BSI) May,2015

Greenhouse Gas Emissions (2010-2014)
(Tons of CO2/MW)
Breakdown of Greenhouse Gas Emissions (2014)
(Tons of CO2/MW)

Emissions and Waste (per MW produced)

Greenhouse Gas Emissions
Perfluorocarbons 0
SF6 0.024
NF3 0
CHF3 0.014
CF4 0
C2F6 0
Air Emissions
SOx 0.06
NOx 22.95
PM10 1.05
VOCs 1.89
Landfill Disposal
Weight of Hazardous Waste Released and Transferred
Heavy Metal Emissions

Note: Verified by British Standards Institution (BSI) May,2015

Chemical Use

Main Chemical Consumption per MW Module Production (m3/MW)

- Consumption statistics based on Trina Solar PV Park West campus and Southeast campus manufacturing

Water Stewardship

Water Consumption per MW Module Production (m3/MW)

Wastewater Discharge Volume per MW Module Production (Tons/MW)

Water Quality Indicators

Concentration of Chemical Oxygen Demand (COD)

Concentration of Total Suspended Solids

Concentration of Heavy Metals

Source: Changzhou Drainage Management Office (Local Authority)