*Article* **Sustainable Solutions for Green Financing and Investment in Renewable Energy Projects**

### **Farhad Taghizadeh-Hesary 1,\* and Naoyuki Yoshino 2,3**


Received: 21 August 2019; Accepted: 6 February 2020; Published: 11 February 2020

**Abstract:** The lack of long-term financing, the low rate of return, the existence of various risks, and the lack of capacity of market players are major challenges for the development of green energy projects. This paper aimed to highlight the challenges of green financing and investment in renewable energy projects and to provide practical solutions for filling the green financing gap. Practical solutions include increasing the role of public financial institutions and non-banking financial institutions (pension funds and insurance companies) in long-term green investments, utilizing the spillover tax to increase the rate of return of green projects, developing green credit guarantee schemes to reduce the credit risk, establishing community-based trust funds, and addressing green investment risks via financial and policy de-risking. The paper also provides a practical example of the implementation of the proposed tools.

**Keywords:** green finance; green investment; green credit guarantee scheme; community-based trust funds; renewable energy
