ARTICLE IN PRESS Renewable Energy 31 (2006) 1718–1732 www.elsevier.com/locate/renene Renewable energy perspectives and support mechanisms in Taiwan J.H. Wu, Y.H. Huang Department of Resources Engineering, National Cheng Kung University, Tainan 701, Taiwan Received 3 February 2005; accepted 2 September 2005 Available online 19 October 2005 Abstract The use and development of renewable energy has become a major policy incentive in Taiwan. Some measures, promoting renewable energy, were previously instituted, but many legal and institutional barriers, hampering the development of renewable energy, remain; thus, it is necessary to encourage discussion to eliminate barriers and implement support mechanisms. This article reviews current measures and addresses the perspectives and support mechanisms of renewable energy in Taiwan. Basically, Taiwan’s short, medium and long-term development progress and strategies for renewable energy sources can be seen to correspond to current international initiatives; in practice, however, many issues (such as establishing domestic renewable energy technologies and inter-departmental coordination mechanisms) must still be addressed, in order to actively promote the utilization of renewable energy. r 2005 Elsevier Ltd. All rights reserved. Keywords: Renewable energy; Support mechanisms 1. Introduction The challenge of rapidly increasing global greenhouse gases (GHGs), and their pervasive impact on humanity, has spurred international initiatives for limitations on GHG production. Among others, the Taiwanese government is paying close attention to this issue. A National Energy Conference was convened in 1998, in order to promote the Corresponding author. Tel.: +886 6 2096174; fax: +886 6 2380421. E-mail address: hwaa@mail.ncku.edu.tw (J.H. Wu). 0022-5096/$ - see front matter r 2005 Elsevier Ltd. All rights reserved. doi:10.1016/j.renene.2005.09.007 ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 1719 utilization of new and clean energy sources. The target share for renewable energy, in the total energy supply, is 3% by the year 2020. Recently, according to the Challenge 2008: National Development Plan and the Nuclear-free Homeland Policy, the government of Taiwan has offered favorable price incentives to renewable energy producers, for up to 12% of the country’s total power generating capacity (about 6500 MW). Furthermore, according to the Nuclear-free Homeland Action Plan, a budget of NT$3 billions (US$90 millions) will be made available each year, commencing 2004, to promote the development of clean energy and energy saving industries. This shows that the use and development of renewable energy has become a major policy incentive for the Taiwanese government. Some measures, promoting renewable energy, were previously instituted in Taiwan; many legal and institutional barriers, hampering the development of renewable energy remain, however. Discussion must be encouraged to eliminate barriers and build support mechanisms. This article investigates issues related to the potential and current incentive measures of renewable energy in Taiwan. The perspectives and support mechanisms of renewable energy are also addressed, with the goal of helping to promote the utilization of this clean energy. 2. Renewable energy development frameworks and barriers 2.1. The frameworks of renewable energy development Energy-supply systems have historically been very large, in order to achieve economies of scale; renewable energy systems are no different. This article applies the framework of the President’s Committee of Advisors on Science and Technology (PCAST), to analyze the development progress of renewable energy from four phases [1] (Fig. 1). Commercial scale Scale Cost buy down Medium Small Research & Development Demonstration Cost buy down Widespread Deployment Barriers • Difficulty of capturing • Difficulty of capturing benefits of demonstration • Financing of • Longtime horizons • Longtime horizons • Cost uncertainty • High risks • Risks • Technological and benefits of R&D • Large capital costs incremental cost other risk Fig. 1. Development progress of renewable energy. • Price for competing technologies doesn’t include externalities; • Lack of finance • Lack of information ARTICLE IN PRESS 1720 J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 2.1.1. Research and development phase The research and development phase focuses on moving a technology toward a potentially marketable application or product. The characteristics of this phase include long paybacks and high investment risk. 2.1.2. Demonstration phase The demonstration phase typically consists of building one or more energy-technology manufacturing or energy production/use facilities, of increasing scale, to prove the technical and potential commercial viability of the technology. 2.1.3. Cost buy-down phase Once a technology has been demonstrated on a potentially viable commercial scale, there remains a long process of building a series of such systems, to scale up equipment manufacturing facilities, and also to learn how to reduce manufacturing, system installation, and operations and maintenance costs to competitive levels. As cumulative production volume increases, costs will be reduced until some innovative technologies become fully competitive with conventional ones. 2.1.4. Widespread deployment phase After a new technology has proceeded through the R&D, demonstration and cost buydown phases, it is ready for large-scale deployment. Even if the new technology then appears fully ‘‘cost-effective’’, some significant barriers typically remain, to its widespread deployment. These barriers can be alleviated through educating end-users on the benefits of renewable energy, or by legislation supporting renewable energy. In addition, according to the ‘‘triangulation’’ framework proposed by International Energy Agency (IEA), the development progress of renewable energy may also be viewed from three different directions [2]. The triangulation framework is shown in Fig. 2. 2.1.5. A research development and deployment perspective The first perspective focuses on market learning processes, the ‘‘learning-by-doing’’ effects, which come with its use, improve technical performance and reduce costs. R&D+ Deployment Good Market Development Market Policy Market Barriers Transformation Fig. 2. Triangulation framework. ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 1721 2.1.6. A market barriers perspective The second perspective focuses on an economic analysis of market barriers. In this perspective, the emphasis is on understanding such barriers and where government may play a legitimate role in reducing them. Economic analysis, and the discipline it promotes, is central to the barriers perspective. 2.1.7. A market transformation perspective The third perspective focuses on market players and gives practical techniques for the transformation of energy markets. In practical terms, markets must be built for renewable energy technologies. The behavior and roles of market players, how their attitudes guide decisions, and how these attitudes can be influenced, are the main concerns. To conclude the above two frameworks, in the renewable energy development progress, there are higher risks associated with the research and development phase; thus, governments can play a valuable role by implementing policies and programs supporting the initial R&D of renewable technologies. Owing to some existing market barriers, during the demonstration phase and cost buy-down phase, economies of scale must be achieved, so costs can be reduced. Renewable energy technologies have some market indetermination, however, causing high investment risk and financial problems; government support (such as a subsidies) can assist in accelerating these phases. Finally, during the widespread deployment phase, renewable energy can be actively promoted through educating endusers about its benefits; legislation promoting renewable energy, or levies on the consumption of fossil fuel, can also help. 2.2. Renewable energy development barriers As with other energy technologies, renewable energy will be faced with barriers related to technologies, economies, institutions, laws and public-acceptance during the development process. Table 1 provides a summarized list, along with some typical measures that can be taken to alleviate these barriers [2]. Technical barriers include buyer’s risk and technology-specific barriers; economic barriers include price distortion, uncompetitive market prices and finances; and institutional barriers include inefficient market organization in relation to new technologies. Compared with renewable energy development frameworks, it can be seen that buyer’s risk belongs to technical demonstration during the demonstration phase, which can be removed by establishing demonstration systems that prove technical viability. Uncompetitive market prices and financing, related to barriers during the cost buy-down phase, can be removed through learning cost subsidies and financial assistance to accelerate the cost buy-down of renewable technologies. Price distortion and technology-specific barriers, related to the widespread deployment phase can be removed through internalizing externalities and connecting measures to related renewable energy, in order to accelerate the widespread use of renewable technologies. In addition to these technical and economic barriers, we must also be concerned about legal and institutional barriers, which may hinder the development of renewable energy. Take land-use in Taiwan, e.g., according to the Regulations for the Land-Use of NonCities, permission has already been given to build facilities related to renewable energy. But renewable energy facilities, built on agricultural, forestry or state-owned land must ARTICLE IN PRESS 1722 J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 Table 1 Types of market barriers, with key characteristics and measures Barriers Technical barriers Buyer’s risk Technology-specific barriers Economic barriers Price distortion Uncompetitive market price Key characteristics Typical measures Difficulty in forecasting over an appropriate time period Often related to existing infrastructures Demonstrations Costs associated with incumbent technologies may not be included in their prices Internalize ‘‘externalities’’ Taxes Removal of subsidies Scale economies and learning benefits have not yet been realized Learning investment Additional technical Connect measures to other important business issues development Finance Institutional barriers Inefficient market organization in relation to new technologies Initial cost may have high threshold Special funding Third-party financing options Inappropriate incentives. Established companies may have market power to guard their positions Restructure markets Market liberalization change their stated purpose, which is not easy as it requires an inter-departmental coordination mechanism. Furthermore, measures taken by other countries, in the effective promotion of renewable energy, are a valuable resource. The measures adopted by other countries are concentrated on ‘‘financial incentives’’, ‘‘feed-in tariffs’’, ‘‘guaranteed prices for electricity’’ and ‘‘renewable portfolio standards’’ (RPSs) [3–6]. This also illustrates that the cost of renewable energy is still high and must rely on government support for effective promotion. 3. Status of renewable energy in Taiwan 3.1. Potential of renewable energy in Taiwan Taiwan is a densely populated island with limited natural resources. Due to rapid economic growth and a subsequent increase in energy consumption, Taiwan’s GHG emissions are also increasing. In addition, due to a lack of self-sufficient energy resources, Taiwan relies on imports for the majority of its energy; exploiting indigenous energy, therefore, is becoming more and more critical. Taiwan’s potential benefits from renewable energy are shown in Table 2 [7,8]. ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 1723 Table 2 Taiwan’s renewable energy potential Items Potential for renewable energy in Taiwan Major technologies Solar energy (for heat supply) The potential is around 1.8 millions square meters based on an estimate of the area of solar collections in Taiwan Solar water heaters Solar energy (for electricity) The potential is around 12 thousand MWp generation capacity, based on an estimate of the solar photovoltaic settings for residences, commerce, public facilities and others Solar photovoltaic Biomass The potential is around 2000 MW generation capacity, based on biomass investigation in Taiwan including MSW, RDF, petroleum cokes, sugar cane, rice husks, black liquor, scrap tires, paper rejects and biogas Different kinds of wasteto-energy technologies Geothermal energy The potential is around 1000 MW generation capacity, based on investigation of over 26 major geothermal sites in Taiwan Geothermal generation systems Geothermal heaters Wind energy The potential is at least 1000 MW generation capacity in inshore wind power systems, and 2000 MW generation capacity in offshore wind power systems, based on investigation of many sites in Taiwan, having a wind speed of more than 5 m/s Offshore wind power systems Inshore wind power systems Hydro energy The potential is around 5110 MW generation capacity, based on investigation of over 129 rivers in Taiwan Hydropower generation systems From Table 2, it can be seen that renewable energy has great potential in Taiwan, although the quality of renewable energy may greatly differ, according to geographical positioning. Barriers must be eliminated and related support mechanisms developed, to facilitate the utilization of renewable energy in Taiwan. 3.2. Current renewable energy measures Taiwan’s current incentives to promote renewable energy are shown in Table 3 these measures include system subsidies (installation and exploration), financial incentives and electricity purchase subsidies. Having implemented these incentives and provided subsidies, the renewable energy status, in 2003 was as follows [9]: The cumulative installed systems for solar water heaters exceeded 300,000 households, with a corresponding installation rate (by household) of 4%. The installation area for heat collectors had reached 1,200,000 m2; this is the 10th largest installment base in the world. For PV demonstration systems, 74 subsidy applications were approved, with an accumulated installation capacity of 512 kWp. For wind power demonstration systems, ARTICLE IN PRESS 1724 J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 Table 3 Current incentives for promoting renewable energy in Taiwan Items System subsidies (installation and exploration) Solar Installation of photovoltaic system: NT$150,000/kWp (about US$4500/kWp), less than 50% of installation cost Administration agency, public school and hospital suitable for demonstration are subsidized 100% for system under 10 kW Solar thermal water system: NT$1000–3000/m2 (about US$30–90/m2) Wind Geothermal Subsidies for purchased electricity Subsidy of NT$0.5/kWh (about US$0.015/kWh) for landfill gas power system Taipower’s interim power purchase measure (2003) (1) An interim measure before the ‘‘Renewable Energy Development Bill’’ is passed by the Congress (2) Total quota: 300 MW renewable energy (3) NT$2/kWh (about US$0.06/kWh) paid to approved applicants for 10 years can be extended up to 20 years Financial incentives Statute for Upgrading Industries 13% tax credit for investment in energy conservation, renewable energy utilization equipment 2-year accelerated deprecation Low interest loans Wind power demonstration system: NT$16,000/kW (about US$480/kW), less than 50% of installation cost Exploration of geothermal resources: up to NT$20 millions (about US$0.6 millions) per site subsidization approval was given for a total capacity of 8.54 MW (three demonstration sites). In geothermal energy, the Bureau of Energy is working with local governments to construct demonstration generation systems for multi-purpose applications. Their target is to assist in promoting at least 5 MW of geothermal power generation in 5 years. In hydropower, total installed capacity is around 1900 MW (excluding pump storage hydropower), while the capacity of small hydropower (smaller than 20 MW) is around 130 MW. In biomass energy, more than 70 biomass installations are in existence, with capacities of 486 MW power generation and 920 kton/year heat production. 3.3. Review of current measures The measures currently in place to promote renewable energy include system subsidies (installation and exploration), financial incentives and subsidies for purchased electricity; they are distributed over many laws, however. In order to more actively support renewable energy, these measures should, in the future, be integrated into one law. Taking as examples, the general price guarantee for each kWh of green power granted in Germany ARTICLE IN PRESS Measures Goals J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 Setting Targets to Ensure Investment Recovery Target Purchase Rates Establish Specific Foundation Contens 1. The incentive target is set for 6,500 MW 2. Rate of electricity is clearly stipulated at 2 NT$ for each kWh produced 3. Establishment of a foundation. Utilities take charge to collect the differences and reflect to the electricity tariff. Establishment of Management System Scope for Incentive Inter connection Reporting/ Auditing 1725 Removing non-technical Barriers Land acquisition Demonstration 1. Local utilities are obligated to provide interconnection services and to purchase the renewable electricity. 1. For certain renewable installation, it is allowed to have the right to use the State-own land. 2. Local utilities are obligated to provide back up power services. 2. Demonstration for application of PV 3. The tie line is taken care by renewable operators. 3. Other non-electricity applications Fig. 3. The key elements of Renewable Energy Development Bill. and the capacity auctions practiced in the United Kingdom. By following the example of Germany, a law could be drafted that would offer price incentive grants to renewable energy producers. In Taiwan, renewable energy incentives have concentrated on financial assistance (such as system and purchased electricity subsidies), but have rarely involved legal or institutional assistance (such as land-use, building codes, grid connection standards, etc.). In light of this, a Renewable Energy Development Bill has been submitted to the Legislative Yuan for ratification to establish a legal environment for renewable energy, facilitating its sustainable utilization. The key elements of Renewable Energy Development Bill are shown in Fig. 3. Hence, rapid passage of the Renewable Energy Development Bill by the Legislative Yuan is a crucial factor in expanding the market of renewable energy in Taiwan. 4. Taiwan’s future renewable energy target and progress 4.1. The future target of renewable energy in Taiwan The National Energy Conference in May 1998 set a 3% goal for renewable energy utilization by 2020 in Taiwan. In 2003, the renewable energy development target of Taiwan was amended to enhance the determination toward the utilization of clean energy. The target now is that the share of renewable energy in terms of installed power generation capacity would be 12% of the total in the long term. By the end of 2003, total installed capacity in Taiwan reached 40,039 MW, of which renewable was 2569 MW (including conventional hydro 1909 MW), accounting for 6.4% of the total. Power generation in 2003 totaled 208.9 TWh and total electricity consumption in 2003 amounted to 196 TWh. The future targets (2020) are shown in Fig. 4, of which 46% will be coal-fired, 3% oil-fired, 25% gas-fired, 9% nuclear, 5% pump storage hydro and 12% renewable energy (about ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 1726 Gas 25% Nuclear 9% Pump storage hydro 5% Oil 3% Renewable Energy 12% (6,500MW) Geothermal 0.28% (150MW) Coal 46% Conventional hydro 4.62% (2,500MW) Wind energy 2.76% (1,500MW) Solar energy 1.85% (1,000MW) Biomass 2.50% (1,350MW) Fig. 4. Future targets (2020) for renewable energy in Taiwan. 6500 MW). The planned target is expected to be reached by 2020, after which there will be a return to the market mechanism [10]. Furthermore, the Executive Yuan adopted a Nuclear-free Homeland Action Plan for the Establishment of a Nuclear-free Nation in 2003. A budget of NT$3 billions (US$90 millions) will be made available each year, commencing 2004, to promote the development of clean energy and energy saving industries. When this target is reached, the proportion of renewable energy to total power generating capacity in Taiwan will be equal to that of developed countries, like Japan and Germany. As shown in Fig. 5, the future targets of renewable energy in Taiwan have high density development as a goal (181 kWh/km2). Electricity from renewable sources will account for 12% of overall electricity production in the future, equal to Japan and Germany [10]. In the renewable energy categories, Japan will have high development in hydropower, which accounts for about 68% of its renewable electricity generation; Germany will have high development in wind power, which accounts for about 54% of its renewable electricity generation; and Taiwan will have balanced development with renewable energy feasibility. 4.2. The future development progress of renewable energy in Taiwan Taiwan has already introduced renewable energy and energy conservation technologies through the international stages of APEC, with bilateral and multilateral meetings. Now, according to the plans of the Bureau of Energy an overview of the short, medium and long-term development progress and strategies of renewable energy in Taiwan is given in Table 4 [11]. As shown in Table 4, the short, medium and long-term development progress and strategies for renewable energy in Taiwan, corresponds to international initiatives (renewable energy development frameworks). The development progress of renewable ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 Geothermal Energy 4% Solar PV 4.7% Geothermal Energy 3% Biomass 34.9% Solar PV 3.9% 1727 Biomass 19.9% Wind Energy 4.5% Wind Energy 14.5% Hydro Energy 68.1% Hydro Energy 41.8% Taiwan:6,500MW/27.5TWh (power generation from renewable account for 12% of total power generation) Development density above 181KW/km2 Biomass 18.1% Solar PV 1.5% Japan:32,920MW/120.8TWh (power generation from renewable account for 10.8% of total power generation) Development density above 89KW/km2 Hydro Energy 26.3% Wind Energy 53.9% Germany:28,200MW/76TWh (power generation from renewable account for 12.5% of total power generation) Fig. 5. Comparison of the future renewable energy targets for Taiwan, Germany and Japan. energy can be divided into ‘‘research and development’’, ‘‘demonstration’’, ‘‘cost buydown’’ and ‘‘widespread deployment’’ phases. According to the potential and development of renewable energy in Taiwan, the government will plan the work of each phase in detail, so that the utilization of renewable energy could be actively promoted. At present, the development of renewable energy in Taiwan is in the initial stage; related green market mechanism (such as Tradable Green Certificates) has not been introduced. Considering the relative cheap electricity rate in Taiwan and high developing cost of renewable energy, it would be very difficulty if not impossible to promote without governmental support. 5. Support mechanisms to promote renewable energy Long-term, renewable energy consumption is targeted to reach 12% of the country’s total power generating capacity. It is important that related support mechanisms are in place during renewable energy development in Taiwan, to seek a balance among economic development, energy security and environmental protection. The framework for the future promotion of renewable energy in Taiwan is shown in Fig. 6. The keys to its success lie in building a nurturing environment to promote renewable energy, by exploiting the greatest energy benefits and establishing domestic renewable energy industries. The progress of renewable energy is dependent on policy, as well as legal and institutional mechanisms. 5.1. Policies to promote renewable energy 5.1.1. Research and development phase The government can strengthen the existing working group by including academics, as well as experts from industry, the private sector and relevant agencies. In addition, renewable energy R&D can be conducted jointly by related enterprises, to encourage ARTICLE IN PRESS 1728 J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 Table 4 Short, medium and long-term development progress and strategies for renewable energy in Taiwan Products/ technologies 2001–2004 years 2005–2010 years Solar thermal Cost buy down Widespread deployment Photovoltaic Strengthen R&D and demonstration; establishment of domestic PV industry Renewable portfolio standards for electric power industry and demonstration Geothermal energy 1. Demonstration generation systems with multi-purpose utilization 2. Renewable portfolio standards for electric power industry Wind power Cost buy down (a guaranteed price of electricity) Cost buy down (a guaranteed price of electricity) Renewable portfolio standards for electric power industry Demonstration Cost buy down Waste gasification R/D and demonstration Cost buy down Ethanol fuel Strengthen R&D and demonstration Cost buy down Biodiesel Strengthen R&D and demonstration Cost buy down Biomass gasification Long term R&D Demonstration and cost buy down Hydropower Biomass Biogas generation 2011–2020 years Renewable portfolio standards for electric power industry Widely deployment Renewable portfolio standards for electric power industry Widespread deployment commoditization of technology, in the development of domestic renewable energy. Industry-related alliances are being continuously established in Taiwan. A recently formed Photovoltaic Industry Alliance joined force with industry, institution, government and academia toward the development and utilization of PV system in Taiwan [12]. It can assist in technology transfer, technology consultancy and personnel training to enhance the PV industry’s competitiveness. 5.1.2. Demonstration phase Demonstration systems will be established for renewable energy in Taiwan. Measures for subsidizing renewable energy demonstration systems must also be developed to promote innovative technology (such as solar cities, wind farms and geothermal parks), in order to actively build a renewable energy demonstration environment. A recently Solar City Promotional Program implemented by Bureau of Energy, Tainan, Chiayi and Taipei cities were chosen as sites for the solar city competition. In April 2005, the three entries will be evaluated, and the best model will win the NT$150 millions ((US$4.5 millions) ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 Key Issues Building a Nurturing Environment to Promote Renewable Support Mechanisms At Research & Development Phase The Medium and Long Term Targets Examining the promotion of renewable energy and making adjustments according to cost changes Developing domestic renewable energy at high utilization density Exploiting the Greatest Energy At Cost Buy-Down Benefits Phase At Widespread Deployment Phase Perspectives A budget of NT$3 billions (US$90 millions) each year commencing 2004 to promote development of clean energy and energy saving businesses At Demonstration Phase Development of Renewable Energy in Taiwan 1729 Innovative technology demonstration system (solar cities, wind farms, geothermal parks) The power generating capacity from renewable energy accounsts for 12 percent of the island's total power generating capacity in 2020 Seek a Balance among Economic Development Energy Supply, and Environmental Protection in Taiwan Renewable energy industries from Germination to Maturity Establishing Domestic Renewable Energy Industries Establishing leadership in world renewable technology Other Auxiliary Support Machanisms The output value in industries of solar PV, solar water heaters, and biomass promoted, up to NT$ 10 billions / year (US$300 millions) The Medium Term Targets (to 2010) The Long Term Targets (to 2020) Fig. 6. Future framework for promoting renewable energy in Taiwan. demonstration subsidiary. As for the geothermal park, Ilan city has received approval from the Ministry of Economic Affairs to develop its geothermal energy resources and is working on a project that the local government hopes will produce 5000 kW of power by 2007. 5.1.3. Cost buy-down phase It is government support (such as system subsidies or financial incentives) that will accelerate this phase. The draft of the Renewable Energy Development Bill will offer price ARTICLE IN PRESS 1730 J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 incentive grants to renewable energy producers (US$0.06/kWh). Also, the Statute for Upgrading Industries provides corporations with incentives to procure renewable energy equipment in the form of an accelerated depreciation plan, tax credits and low-interest loans. At present, due to the delay in passage of the Renewable Energy Development Bill, the state-owned utility Taiwan Power Company agrees an interim measure to purchase renewable energy power at the guaranteed price (US$0.06/kWh) for a period of 10 years. This measure will be available until the passage of the Renewable Energy Development Bill or a cap of 300 MW. By proposing the fixed feed-in tariff for renewable energy at US$0.06/ kWh, investment on mature renewable energy and sites with better resources, such as wind power with better wind conditions, small hydropower and biogas power plant would be encourage preferentially. In addition, the cost to install PV capacity is about US$9000/kW in Taiwan, as a result, the levelized cost is about US$0.42/kWh. Considering the development potential of PV in Taiwan, apart from a general price guarantee for each kWh anchored in the Renewable Energy Development Bill, Government could also subsidize for the equipments of PV and set gradual targets to diffuse PV step by step. 5.1.4. Widespread deployment phase This phase focuses on dissemination to end-users and educates them on the benefits of renewable energy technologies and their effective use. The government could play the main drivers of such development as they set the legislative framework and provide large shares of funding. Additionally, the mass media could also play an important role in communicating the benefits of renewable energy to the public and thereby raising general awareness and acceptance. In Taiwan, the renewable energy website has been established, in order to make the information widely available. The educational TV programs about renewable energy issues also already exist. 5.2. Legal and institutional mechanism for promoting renewable energy With both legal and institutional mechanisms, renewable energy will enter the energy market through legislation. For example, a Renewable Energy Development Bill has been submitted to the Legislation Yuan for approval so as to remove non-technical barriers. According to the Bill, it is allowed to have the right to use the state-own land for certain renewable installation. Utilities are obligated to provide interconnection services and to purchase the renewable electricity. Furthermore, the Green Procurement Law can be combined with renewable energy to guarantee the use of renewable energy, and related laws can be modified, in order to actively promote the use of renewable energy. In addition, an RPS is the international trend to encourage development of renewable energy. The old version of the Revised Draft of Electricity Law in Taiwan has provided an RPS. However, obligation has been deleted in the new version. This violates the trend toward the development of international renewable energy; thus, efforts should be made to amend the Revised Draft of Electricity Law. The promotion of renewable energy also requires the cooperation of both central and local governments. To effectively promote renewable energy, it is necessary to establish inter-departmental coordination and cooperation inside government. Other auxiliary support mechanisms, such as setting up a fund to promote renewable energy and approving related renewable energy facilities are still in the planning stage. ARTICLE IN PRESS J.H. Wu, Y.H. Huang / Renewable Energy 31 (2006) 1718–1732 1731 To conclude, the government of Taiwan is planning, executing and reviewing support mechanisms presently in place and will hopefully assist in fostering a nurturing environment to promote renewable energy, by developing the greatest energy benefits, and establishing domestic renewable energy industries. Because the cost of renewable energy is uncertain, renewable energy potential must be considered and a balance sought between the domestic economy and the supply of electricity. 6. Conclusions Taiwan is an island nation with very few indigenous conventional energy resources, and energy imports are over 97%. To facilitate domestic energy diversity as well as improve environmental quality, the promotion of renewable energy has become an important part of the energy policy in Taiwan. The National Energy Conference in May 1998 set a 3% goal for renewable energy utilization by 2020 in Taiwan. In 2003, the renewable energy development target of Taiwan was amended to enhance the determination toward the utilization of clean energy. The target now is that the share of renewable energy in terms of installed power generation capacity would be 12% of the total. Additionally, according to Nuclear-free Homeland Action Plan, a budget of NT$3 billions (about US$90 millions) annually commencing from 2004 for promoting the development of clean energy and energy saving industries to facilitate the achievement of the renewable energy development target. Some measures to promote renewable energy have been implemented before. In addition to financial assistance (such as system subsidies and purchased electricity subsidies), nonfinancial assistance (such as the removal of legal and institutional barriers) is also required.In order to integrate and coordinate the challenge of promoting renewable energy, the Renewable Energy Development Bill has been proposed to establish an appropriate legal environment. Rapid passage of the Renewable Energy Development Bill is a key factor in expanding the market for renewable energy in Taiwan. In future, related policies, as well as legal and institutional support measures (related Architectural Laws, Green Procurement Laws) must strive to facilitate the sustainable utilization of renewable energy. The Revised Draft of Electricity Law must be amended and revised toward the development of renewable energy. The short, medium and long-term development progress and strategies of renewable energy in Taiwan are seen to correspond to current international initiatives. In practice, many issues of each phase (such as establishing domestic renewable energy technologies at R&D phase or building inter-departmental coordination mechanisms at widespread deployment phase) must be addressed, in order to actively promote the use of renewable energy. References [1] President’s Committee of Advisors on Science and Technology (PCAST). Powerful partnerships: the Federal role in international cooperation on energy innovation. PCAST; 1999. [2] International Energy Agency (IEA). 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