Environmental Protection Improvements and Achievements
The Achievements of the Promotion of Energy Conservation and Carbon Reduction in 2011:
■ Expanding Low-Carbon Energy Generation Projects
● Adopt the best available technologies for new generation units
The retrofit projects currently under way for the existing coal- fired units in the Talin, Shenao and Hsinta Thermal Power Plants will replace old units with high-efficiency ultra-supercritical units at an efficiency reaching 44.5% (LHV gross). Taking the Linkou Thermal Power Plant as an example, after being retrofitted, the CO 2 emissions from the new 800 MW coal-fired units were about 10% lower than those from the original units.
● Raise clean energy generation ratio
Taipower continued to develop and purchase renewable energy, including hydro, wind and solar power. In 2011, the newly added renewable energy installed capacity reached 107.2 MW. The CO 2 emissions were reduced by 0.195 million tons. In addition, the increase of gas-fired generation cut down CO 2 emissions by 1.1773 million tons.
■ Upgrading the Efficiency of Existing Generation Units
In 2011, Taipower upgraded the efficiency of the existing thermal power units: ①Tunghsiao Combined-cycle GT62 was renewed with the latest type of high-efficiency gas turbine blades. The efficiency of the single-cycle unit was increased by 2.23% and an annual CO 2 reduction of 36,000 tons was achieved. ②Hsinta Unit 1 steam turbines were replaced with HP/IP rotors, blade rings and inner cylinders. The heat rate has been improved by 24 kcal/kWh and annual CO 2 reduction has reached 39,000 tons.
■ Upgrading the Efficiency of the Transmission and Distribution Systems
1. The implementation of the Seventh Power Transmission and Substation Project was continued. In 2011, the following projects were completed: a total length of 272 ckt-km transmission lines, a total capacity of substations reaching 3,523 MVA, and 2 E/S and 3 D/S substations.
2. The implementation of various tasks to cut down line loss was continued. In 2011, the line loss of the Taipower system was 4.76%.
■ Strengthening R&D on Power Grid Technology
1. A Renewable Energy Management System (REMS) was completed. This system was included in the Taipower grid with the functions of information enquiry, analysis and total quantity control.
2. A framework for the micro-grid AMI test site was completed.
■ Strengthening R&D on Power Supply-side Technology
1. The establishment of the Kinmen automatic wind power forecasting system was completed and tested.
2. Several research projects, such as the establishment, generation monitoring, analysis, etc., of a solar power demonstration system at TPRI (Taiwan Power Research Institute) Shulin district were conducted.
3. The pulverized coal flow balancing improvement for Taichung Thermal Power Plant Unit 5, with 0.1% of efficiency improvement, equivalent to a CO 2 reduction of 3,300 tons/year, was completed.
■ Developing and Trading Carbon Credits
● The Company’s Voluntary GHG Reduction Project
As of the end of 2011, the relevant units engaged in the company's Voluntary GHG Reduction Project, including promoting wind power and solar power generation, upgrading thermal unit efficiency, increasing natural gas generation, etc., passed ISO 14064-2 verification tests. The total amount of reduction reached 12.85 million tons.
● Forestation Project
To alleviate the impact of global warming on the Earth, the local governments assisted by providing land and Taipower covered expenses to jointly fulfill forestation projects. Tree planting not only reduces CO 2 in the atmosphere but also beautifies and greenifies the environment and upgrades environmental quality. In 2011, Taipower cooperated with Miaoli County Government for a forestation project in an area of 15 hectares.
■ Implementing Demand-side Management
With the implementation of the “Power Tariff Discounts Incentive for Energy Conservation”, as of the end of 2011, the power consumption was reduced by 3,791 GWh, tariff on power consumption savings reached 7,932 billion, and CO 2 was reduced by 2.33 million tons.
■ Strengthening Internal Energy Conservation
Through implementing internal energy conservation measures, in 2011, the amount of power savings reached 160 GWh, while gasoline savings reached 135,000 liters and water savings totaled 194,000 m 3 .
■ Strengthening Energy Conservation and Carbon Reduction Promotion and Communication
Each year, Taipower promotes the concept and practical methods for carrying out energy conservation and carbon reduction through various channels. In 2011, the achievements were:
1. Energy conservation seminars: 1,293 activities.
2. Taipower energy-conservation exhibits: 483,000.
3. Technical consultation service given to customers over 100 kW: 5,063 customers.
4. Large-scale energy conservation symposium and energy conservation and carbon reduction promotion public welfare activities.
Other Environmental Protection Improvement Achievements
■ Environmental Monitoring
In 2011, the following major power projects: ①9 thermal power projects, including Tunghsiao, Tatan, etc., ②5 hydro power projects, including Chingshan, New Wuchieh, Hoping Bihai, etc., ③3 wind power projects, including Sihu,Wanggong, and Taichung, and ④the 4th Nuclear Power Project, were all installed with environmental monitoring systems. These systems carry out continuous monitoring work that sheds light on changes in environmental quality, both during the time of the construction and during operation of power facilities to serve as a basis for environmental impact assessment and analysis and adopting countermeasures. In addition, in order to reach the goal of protecting the ecological environment and maintaining environmental quality, 8 investigations and studies on ecological environmental protection were conducted.
Regarding the ecological monitoring of coral off the shores of Taiwan, Taipower, combining digital and Internet technologies, has installed underwater cameras near the water intake of the 3rd Nuclear Power Plant for long-term monitoring of the ecological changes in the coral. This practice has become an internationally well-known observation platform for remote education and research on coral reef ecology.
■ Pollution Prevention (air pollution and environmental management)
In 2011, the intensity of air pollution emitted from Taipower’s thermal power plants was greatly reduced as compared with the levels of 1989 (per million kWh): PM decreased from 745 kg to 27 kg, SO X decreased from 6,323 kg to 356 kg, and NO X dipped from 1,503 kg to 364 kg.
For effective management and performance in terms of environmental protection, the company promotes the establishment of an environmental management system and ensures that the units have passed ISO 14001 certification will continuously work on improvements. As of the end of 2011, 60 units have passed ISO-14001 certification.
■ Reuse of Coal Ash and Treatment of Gypsum
In 2011, 2.10 million tons of coal ash and 0.66 million tons of gypsum were generated. Through open bidding for their reuse, 1.83 million tons of coal ash was used in concrete mix and road filling, etc. The rest was used in land reclamation embankment. The amount of gypsum utilized was 0.64 million tons, which was mainly used as cement material and gypsum board.
■ Radwaste Reduction
In order to enforce nuclear power plant management and minimize the radwaste production, each nuclear power plant has set up its own specific Low-level Radwaste Minimization Program and established a special task force to reduce the production of low-level radwaste, respectively. The company is also cooperating with academic organizations to develop and introduce new radwaste reduction technologies such as high-efficiency solidlfication technologies (PWR-HEST, BWR-HEST). These measures will not only further reduce the quantity of existing solidification, but also upgrade the quality of solidification.
In 2011, the production of solidification and non-solidified radwaste was 162 and 2,615 drums, respectively. After being treated by volume reduction facilities, the total of 2,615 drums of non-solidified radwaste will be reduced to about 564 drums, which will reduced the total amount of radwaste to 726 drums. This will be 5.7% of the highest total ever recorded - 12,724 drums in 1983 - thereby reaching the lowest record in Taipower’s history.
■ Nuclear Power Plant LLW Disposal
Complying with the guidelines specified in the “Nuclear Materials and Radioactive Waste Management Act”, which became effective on December 25, 2002, Taipower submitted the low-level radioactive waste (LLW) final disposal plan to the Atomic Energy Council (AEC), and the plan was approved in January 2004. In May 2006, the “Act on Sites for Establishment of Low-Level Radioactive Waste Final Disposal Facility” was signed into law and became effective. It designates the Ministry of Economic Affairs (MOEA) as the implementing authority and Taipower as the site selection operator to implement the tasks of investigation, evaluation and communication for possible sites. In March 2011, the MOEA publicly announced and released a “report on the selection of suggested candidate sites” on the Internet. According to the MOEA’s instruction, Taipower collected and compiled suggestions from various sectors to report to the MOEA in July 2011. After consulting with the authorities concerned and relevant agencies, the MOEA will respond with acceptance notification for each suggestion. The MOEA will then approve and announce “candidate sites” and request local government to hold a referendum for public acceptance.