Energy consumption

There are two types of energy that Tatung consumes – direct energy and indirect energy. Direct energy sources are from diesel fuel oil, LPG, and diesel. Indirect energy source is purchased electricity. The most consumed energy in 2018 was purchased electricity and the amount was 193,792 GJ (87.54%) which equaled to 53,831.11 kkw-hr; followed by diesel with 14,092.20 GJ (6.37) which equaled to 401.35 kilo-liters. The total amount of energy consumption in 2018 was 19,594.72 GJ less than in 2017, which was 8.13% decreased.

▲ Trend of energy consumption

▲ Energy consumption breakdown by category in 2018

Greenhouse gas emission

Greenhouse gases emitted by human activities have already caused global warming and led to the threat on the sustainable development. Corporations actively to reduce the greenhouse gas emissions are not only to show a responsible image to the public but also able to reduce the operation costs from running the business. In order to investigate the amount of GHG emission thoroughly and comply with the regulation, Tatung actively implements ISO14064-1 greenhouse gas management system into the factories. So far, San-Hsia Factory, Taoyuan Wires and Cables Plant, and Taoyuan 1st Plant carry out GHG inventory and get verified by third parties based on reasonable level of assurance every year. For the purpose of enhancing the ability to do greenhouse gas inventory in the factories, Tatung runs ISO14064-1 Internal Verification Class every year. We are expecting to have more well-trained employees through these classes and they are able to do the greenhouse gas inventory well and pass the verification by the third party in the future.

Due to Tayuan Plant and H.Q. are still undergoing the establishment of ISO14064-1, the GHG emissions (scope 3 is not included) disclosed in this report are calculated as follows: the amount of energy sources disclosed in previous paragraph multiplied by each emission factor. The total GHG emissions in 2018 were 31,734.51 tons CO2e which was 3,063.62 tons CO2e (8.80%) less than in 2017. The emissions from diesel, LPG and diesel fuel oil were 1,912.07 tons CO2e, and from purchased electricity was 29,822.43 tons CO2e.

▲ Amount of GHG emissions

Energy saving and GHG reduction

Global warming greatly increases the frequency of extreme weather events and directly causes impacts to the operation of a business. In order to fulfill corporate social responsibility and reduce operating costs, Tatung proposed Stage 1 energy reduction target in 2014: the energy intensity per product in 2018 is reduced by 6% than in 2013 (baseline year).

To achieve the target, we have implemented ISO 50001 in the factories to sharpen up company's energy performance. So far San-Hsia Factory, Tayuan Plant, and Taoyuan Wires and Cables Plant have established ISO 50001 and passed certification. As ISO 50001:2018 was published in 2018, we are aiming to adopt the new version of ISO 50001 in the factories by the end of 2019. In addition, we conduct annual energy audit and report the energy consumption information to the government as well as implements energy saving projects in H.Q. and the factories. In 2018, Tatung reduced about 3.03 million kwh of purchased electricity consumption via 4 dimensions which equaled to 1,678 tons of GHG emission reduction (4.3 Daan Forest Park's carbon reduction amount).

▲ Status of Tatung’s ISO 50001

Tatung energy saving projects and results in 2018

Energy saving projects (by category) Amount of electricity saved (kw-hr) GHG reduction (ton CO2e)
Utilized manufacturing process to reduce operation time 129,855 71.94
Centralized operation areas and shut down unnecessary air conditioners and lightings 1,229,919 681.37
Centralized operation areas and shut down unnecessary air conditioners and lightings 903,272 500.41
Increased the frequency of maintenance for majored energy using equipments and installed curtains to avoid leakage of cooled air 752,464 416.87
Others 13,601 7.53
Total 3,029,112 1,678

Note: 1 kw-hr of electricity emits 0.554 kg CO2e.

▲ Amount of carbon emission reduction

In 2018, we examined the results of our Stage 1 energy reduction target, 6 out of the 8 major products achieved the goal of reducing energy intensity by 6%, and the achievement rate was 75%. The products failed to achieve the target are the motor/generator of San-Hsia Factory and the transformer/distributor of Tayuan Plant. The main reasons were:

1. In order to improve air quality and match production line adjustments, San-Hsia Factory has newly installed RTO air pollution control equipment at the end of 2016 and a new 600T die-casting machine in 2018, which resulting in a significant increase in electricity consumption and diesel consumption.
2. The increase in the number of returned transformers for repairing (still in warranty period) has led to an increase in purchase electricity consumption in Tayuan Plant.

The future improvement in San-Hsia Factory, we will focus on the air compressor system. We will shut down the air valve or modify the pipeline in the area where the compressed air is not needed. The small air compressor will be used in the area where the air pressure system is too far and the amount required is not large in order to prevent the pressure drop and air leakage. We will also regularly repair broken pipeline and replace old joint parts (estimated to save 10% of the air pressure system loading). In addition, the air pressure system will be installed smart meter and the flow meter will be integrated with Tatung EMS to establish air pressure system energy performance indicators, and through the government energy-saving diagnostic resources to find out that the air compressors with poor efficiency and gradually replaced with higher energy efficiency ones. We will check the power consumption from the factory maintenance for the transformers still in warranty period in Tayuan Plant, and use the air-cushion truck to assist the handling of products into the oven to reduce the power consumption from the operation of the large cranes.

In order to continue to carry out energy-saving measures, we have set a Stage 2 energy saving target this year: to achieve the goal of further reduction of 6% in 2023 based on the energy intensity of each major product in 2018.

All the factories will simultaneously carry out the second phase of "Major Energy Equipment Monitoring and Management" project in order to reduce energy consumption. The energy conservation team will be formed by the headquarter and the factory energy managers. The team will carry out power consumption monitoring of major power-consuming equipments and establish a historical database of electricity consumption to identify future energy-saving potentials.

Status of Phase 1 energy saving target for major products

Main product (Unit) 2014 (↓1%) 2015 (↓2%) 2016 (↓3%) 2017 (↓4.5%) 2018 (↓6%)
Motor/generator (HP) X X X X
Electric cooker (piece) X X X X X
Commercial air conditioner (KW)
Transformer/switchgear (MVA) X X X X X
Mechanical meter (piece) X
Lan cable (M) X
Power cable (M) X
Wire (kg) X X

Note: The baseline year is 2013. ◎ represents it meet the goal, X represents it does not meet the goal. Domestic air conditioner was removed from the list since 2018 due to production adjustment.

Latest update: 2019.10.15