Energy Management
Through the "Energy Conservation and Carbon Reduction Subcommittee", we have formulated energy
management plans and targets, and continue to implement management strategies such as power-saving
measures, energy efficiency improvement, implementation of Energy Management System, and renewable
energy planning, to effectively reduce the environmental impact caused by GHG emissions and to address
future climate change risks. In 2021, the electricity consumption intensity is 14 and the carbon
emission intensity remains below 9, both completing the annual targets.
Unimicron's energy use is mainly purchased electricity for production and plant systems, followed by
natural gas, which is mainly used in the mass lamination process. There are also purchased steam for
heating, as well as gasoline and diesel fuel for business vehicles and goods transport vehicles. The
fossil fuel used by Unimicron in 2021 includes gasoline (0.0020 X 109 million joules), diesel
fuel (0.0375 X 109 million joules), and natural gas (0.4436 X 109 million joules),
and indirect energy is electricity (5.4 X 109 million joules) and steam (0.0001 X
109 million joules); the total energy consumption is 5.9 X 109 million joules, and
the consumption intensity is 0.56 X 105 million joules/million revenue. Since 2014, the Group
has gradually changed the fuel of boilers from diesel to cleaner natural gas. As of 2021, the total
consumption of diesel fuel has been reduced by 43% compared with 2014. In order to comply with the
policy of energy-saving target and power restriction measures in Mainland China, the plants are required
to turn on the generating units to maintain the household electricity, resulting in an increase in
diesel fuel consumption in Mainland China plants in 2021. This year, the total consumption intensity of
electricity is 14.37 kWh/million revenue and has been reduced by 19.7% compared with 2020.
Energy Consumption
|
Type
|
Unit
|
Region
|
2017
|
2018
|
2019
|
2020
|
2021
|
|
Gasoline
|
KL
|
Taiwan
|
13
|
15
|
11
|
11
|
5
|
|
Mainland China
|
119
|
112
|
87
|
60
|
55
|
|
Total
|
132
|
127
|
98
|
71
|
60
|
|
Diesel Fuel
|
KL
|
Taiwan
|
411
|
182
|
77
|
128
|
130
|
|
Mainland China
|
302
|
532
|
332
|
335
|
912
|
|
Total
|
713
|
714
|
409
|
463
|
1,043
|
|
Fuel Oil
|
KL
|
Taiwan
|
488
|
512
|
0
|
0
|
0
|
|
Mainland China
|
0
|
0
|
0
|
0
|
0
|
|
Total
|
488
|
512
|
0
|
0
|
0
|
|
Natural Gas
|
m3
|
Taiwan
|
6,005,930
|
7,531,420
|
7,881,489
|
7,780,200
|
8,298,755
|
|
Mainland China
|
2,119,135
|
2,528,663
|
3,126,236
|
2,926,580
|
3,812,358
|
|
Total
|
8,125,065
|
10,060,083
|
11,007,725
|
10,706,780
|
12,111,113
|
|
Liquefied Petroleum Gas
|
Kg
|
Taiwan
|
0
|
0
|
0
|
0
|
0
|
|
Mainland China
|
68,200
|
64,620
|
0
|
0
|
0
|
|
Total
|
68,200
|
64,620
|
0
|
0
|
0
|
|
Electricity
|
kWh
|
Taiwan
|
872,660
|
940,182
|
974,724
|
1,023,422
|
911,027
|
|
Mainland China
|
373,535
|
439,656
|
401,664
|
530,285
|
591,180
|
|
Total
|
1,246,195
|
1,379,837
|
1,376,388
|
1,553,707
|
1,502,207
|
|
Steam
|
Tons
|
Taiwan
|
0
|
0
|
0
|
0
|
0
|
|
Mainland China
|
14,488
|
19,654
|
20,362
|
27,912
|
41,452
|
|
Total
|
14,488
|
19,654
|
20,362
|
27,912
|
41,452
|
|
Note 1: The above data does not include Chungyuan Plant, Chung Hsing Plant, Yangmei
Plant and Shanying II Plant in
Taiwan.
Note 2: The data resource of calculation factor from The 2015 Energy Statistical
Annual Reports issued by the Bureau
of Energy, Ministry of Economic Affairs and the 2017 China Energy Statistical
Yearbook. The heating of various
energy sources is as follows: gasoline (Taiwan: 32,635,200 KJ/KL, and Mainland
China: 33,379,250 KJ/KL), diesel fuel
(Taiwan: 35,145,600 KJ/KL, and Mainland China: 36,040,940 KJ/KL), fuel oil ( Taiwan:
40,166,400 KJ/KL), natural gas
(Taiwan: 35,564 KJ/m3, and Mainland China:
38,931 KJ/m3), liquefied petroleum gas
(Mainland China: 50,179 Kg/m3), electricity
(Taiwan and Mainland China: 3,600,000 KJ/MWh), and steam
(Mainland China: 2,762.9 KJ/ton).
|
Electricity Consumption Intensity
|
Region
|
Unit
|
2017
|
2018
|
2019
|
2020
|
2021
|
|
Taiwan and Mainland China
|
kWh/Million Revenue
|
19.17
|
18.22
|
17.69
|
17.68
|
14.37
|
Note: The above data does not include Chungyuan Plant, Chung Hsing Plant, Yangmei Plant and Shanying
II Plant in Taiwan.
Energy Saving Program in Taiwan Facilities
In response to future energy and carbon risks, we will continue to implement energy reduction plans that
mostly focus on reducing electricity and fuel consumption during the production process. Our plants in
Taiwan are also actively implementing energy and power saving measures, with improving the efficiency of
their energy use as their priority. We are gradually phasing out low-efficiency motors, introducing
high-efficiency FFU fans, replacing existing lighting fixtures with LED ones and implementing programs
to allocate production and set energy-saving modes for equipment in order to save energy and reduce
carbon during the production process.
2021 Energy Conservation Measures
|
Measures
|
Contents
|
Benefits
|
|
|
|
Energy Saving (kWh/year)
|
Emissions Reduction
（t-CO2e/year）
|
|
Process Modification
|
Improve production processes and increase efficiency
to reduce inefficient energy consumption
|
4,942
|
2,566
|
|
Equipment Modification or Renovation
|
Upgrade equipment systems to improve energy
efficiency
|
6,786
|
3,529
|
|
Change Employees’ Behavior
|
Improve management and behavior patterns to avoid
energy wastage
|
600
|
469
|
|
Others
|
Reduce the use of non-essential energy resources
|
876
|
694
|
Benefits of Past Reduction Plans
|
Reduction Item
|
2017
|
2018
|
2019
|
2020
|
2021
|
|
Annual Electricity Saving
(kWh)
|
30,423
|
181,934
|
26,281
|
12,057
|
13,204
|
|
Annual Electricity Saving
(Billion joules)
|
109,523
|
31,498
|
94,615
|
43,406
|
47,493
|
|
Annual GHG Reduction
(Tons of CO2e/kWh)
|
17,944
|
10,789
|
14,039
|
6,501
|
7,258
|
Use Renewable Energy
In addition to continuously improving energy efficiency, we are also planning for the use of renewable
energy. It is expected that by 2025, we will continue to replace energy-consuming equipment to save
energy, and evaluate the introduction of energy storage facilities to stabilize electric power quality
in our plants while curbing peak electricity consumption at the same time. We plan to use renewable
energy and to complement it with solar photovoltaic facilities by 2030 to reduce greenhouse gas
emissions caused by our operations in accordance with operational needs.
