中國太陽光能行業轉變–由演化經濟面解決分析 / China’s growing energy needs have turned renewable energy into a crucial factor necessary for its social stability and national security. This paper has been written with the understanding that the role renewable energy plays in the Chinese industry and market will be nothing less than critical in coming decades. Solar PV electricity is one of the most promising renewable energy technologies and is a fast growing industry. However in China there exists a huge gap between its market potential and current achievements in the field. This thesis paper depicts the evolutionary path China is currently undergoing from a heavy reliance on fossil produced energy to a balanced energy mix by examining its solar PV industry and market. Its major argument is that as transitional processes require long term vision and planning, the potential of china’s energy transition to solar energy needs to be assessed under a set of criteria that can trace a long term development path. By using the six core elements introduced by the evolutionary economics theory, this paper presents a unique in depth analysis of China’s transitional efforts toward solar PV grid parity. The paper has reached three major conclusions. The first and most important is that the Chinese central government seems to be making genuine efforts in promoting solar PV as one of the nation’s future energy sources. These efforts have been marked by assessing governmental legislation concerning Bounded Rationality issues and various incentive programs. The Renewable Energy Law and the Medium and Long-Term Development Plan have served as instrumental driving forces to the immature market. Local governments have shown significant commitment by providing substantial support to the PV industry as well to Co-evolutionary technologies such as inverters and batteries. Legislation has had limited success in handling Lock In issues such as connection to the national grid and real price reflection of conventional energy. The second conclusion is that although the market is still at an early stage of its development, it relies too heavily on Selection promotions, namely direct subsidies. Recent developments in the PV market growth in China can mostly be regarded to the Golden Sun program and the BIPV program. These efforts have been an important promoter in raising global awareness to the potential of its solar sector. However this form of subsidy does not present a long term sustainable growth solution. The lack of a national Fid in Tariff scheme (despite few specific provincial schemes) and existing problems concerning projects tendering process cause an imbalance in terms of market and industry Diversity. This unbalance appears in the form of lack of Diversity in project developers, being mostly local state owned or highly affiliated with the government enterprises. The third conclusion is that China’s government can and should give more focus on domestic Innovation. Currently the country’s national R&D investment is significantly lower than market leaders in Europe. China’s education system does not support more than several world class solar PV electricity research centers and its industry development relies on expensive imported technology and international collaboration. Most companies in the industry hold a short term development vision which affects technological Diversity, mostly in the upstream segments of polysilicon and ingot production. Lack of attention towards a diverse range of future PV and Co-evolutionary technologies limits industry development to specific sectors that have low technological barriers. The paper concludes that while China is well positioned for further expansion of its market it still lacks in specific aspects of its transitional path. This analysis is unique as it presents not only an up to date market and industry status but also refers to their future growth potential. This paper presents a wide range of aspects that directly affect solar PV’s future development. Its true value lies within the usage of the evolutionary economics approach as a theoretical framework, which allows us to gain better understanding of how the different aspects related to the solar PV world affect each other and the fitness of this historic transition.

本研究主要分成兩部分,第一部份,透過多重代理者模式建構以集合競價機制之模擬股票市場。第二部份則在於藉由第一部份所建構之模擬市場,分別針對股市交易策略滲透率與市場價格波動之關係,策略集中度與過度波動之關係,滲透比例變化與其獲利率之關係,進行模擬實驗之研究。 本研究發現策略集中率有越來越小的態勢,表示整個股票市場被少數交易策略所掌控。股價過度波動隨時間而趨於緩和。由於交易代理者之策略組合同質性越來越高,使得原本存在彼此間的其歧異得以泯除,所以市場帶離基本趨勢的偏頗力量相對減小,市場價格趨於平穩發展之格局。 再者,若股利維持不變,股價仍有波動現象,但不會偏離太多,而且到後來呈現收斂狀態。相反地,當股利發生變動時,股價的修正有明顯落後的現象,其後又產生過度反向修正之行為,驗証市場具有過度反應性質。 綜合本研究之觀察與結果顯示,股市有過度反應之反常現象,因此難以預測其變動方向與程度,故市頭資者應避免採取短線操作或追漲殺跌之策略。然而,短期股價的波動雖在所難免,但就長期而言,注重基本面的投資策略終將為市場所肯定,而成為主導市場的中堅力量。

我們把經濟體視為一個複雜適應系統(complex adaptive system), 強調系統中異質性(heterogeneous)agent的學習適應行為與agent之間的互動性交互作用, 此時主流經濟學裡的分析架構, 如:代表性個人模型(represesentive agent model)、理性預期(rational expectation)、固定點均衡分析(fixed-point equilibrium analysis)等將不再適用, 取而代之的是演化經濟學(evolutionary economics)的研究典範, 這樣的研究架構下, 並沒有適當的數學分析工具可資運用, 因此我們改以agent-based建模(agent-based modelng)的社會模擬(social simulation)來建構一個人工的經濟體(artificial economy), 以此為主要研究方法, 這就是agent-based計算經濟學(agent-based computational economics)或稱人工經濟生命(artificial economic life)。 本文中以股票市場為主要的研究課題, 我們以遺傳規劃(genetic programming)的人工智慧(artificial intelligence)方法來模擬股市中有限理性(bounded rational)異質交易者的交易策略學習行為, 建構出一個人工股票市場(artificial stock market), 在這樣的架構下, 我們成功地產生出類似真實股票市場的股價時間序列特性, 我們同時也檢定了人工股票市場中價量的因果關係, 說明了在沒有外生因素之下, 人工股票市場的複雜系統可自發地產生出雙向的價量因果關係, 進一步地, 我們研究下層agent(交易者)行為與上層股價時間序列行為的關聯性, 我們也發現個體的行為並不能直接加總或推論出複雜適應系統的總體行為, 這就是突現性質(emergent property)的發生, 最後, 本文描述了agent-based計算經濟學研究架構的優勢與缺點, 再附帶介紹一個用以進行agent-based建模相關研究的軟體程式庫-SWARM。