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As part of the low-carbon policy and development in Taiwan, the Bureau of Energy introduced the “Green Energy Roofs Project” in 2017, which encouraged homeowners to install green energy roofs. However, the incentives of homeowners and solar photovoltaic operators to participate in this Project were low. The aim of this study is to propose and evaluate alternative models for investing green energy roofs. The contributions of this study are that, first, we consider factors such as risk management schemes and crowdfunding that have not been considered in evaluating green energy roofs project. In addition, this study provides a solution to Taiwan government’s current dilemma about how to encourage homeowners to install green energy roofs. This study adopts five common investment appraisal methods (including payback period, discounted payback period, net present value, internal rate of return and profitability index) to evaluate four different models for investing green energy roofs. The results show that when homeowners are fully responsible for installation costs of green energy roofs with partial funds borrowed from banks and with consideration of risk management, the homeowners have better investment returns. Therefore, the Taiwan government could consider the alternative strategy proposed in this study for promoting green energy roofs so that the country can x`move a bigger step forward towards the goal of being nuclear-free.

Investors in Taiwan prefer to invest in offshore funds, and they are good customers in the eyes of the world's major fund companies. Funds are competing these investors through these 3,400 bank branches. Literature has indicated comprehensive selection criteria when investors choosing a fund, yet no study revealed the gap between what investors’ expected and experienced. The current study conducted a survey among these investors with importance-performance analysis (IPA) to fill this gap. There were two parts in the questionnaire, first part was drawn from literature to measure funds, and the second part was summarized from several depth interviews based on SERVQUAL with senior investors. 240 valid responses from current fund investors. The factors investor’s preference in evaluating a fund may be different in terms of residence areas and age. Perceived importance of fund selection criteria is not significantly different in terms of gender, education, marriage, and income levels. Test results indicated that “investment performance record”, “management fees” and “additional features” of fund, and the “sympathy” dimension of bank should be first improved by either fund or bank company respectively.