Sustainable Sukuk and the green finance movement: ESG-compliant Islamic bonds for sustainable finance

In-Depth Analysis

Green Sukuk represent a compelling convergence of two of the most significant trends in global finance: Islamic finance and sustainable/ESG investing. These instruments are Sukuk whose proceeds are exclusively used to finance or refinance projects that deliver environmental benefits, such as renewable energy, energy efficiency, sustainable transportation, or climate change adaptation. The concept of Green Sukuk naturally aligns with Islamic finance principles. Shariah mandates that economic activity should not cause harm (darar) to individuals, communities, or the environment. The concept of Khalifah (stewardship) in Islam places a responsibility on humans to protect and preserve the natural world. The Maqasid al-Shariah (objectives of Islamic law) include the preservation of life and wealth, both of which are threatened by environmental degradation and climate change. These philosophical alignments make Green Sukuk a natural extension of Islamic finance rather than a bolt-on ESG overlay. The world's first Green Sukuk was issued in July 2017 by Tadau Energy in Malaysia, raising RM250 million to finance a solar power project in Sabah. This was followed by the first sovereign Green Sukuk, also from Malaysia, in June 2017 when the Malaysian government issued a Green SRI (Sustainable and Responsible Investment) Sukuk to fund green assets. Since then, Indonesia has emerged as a major sovereign Green Sukuk issuer, with regular US dollar-denominated Green Sukuk issuances targeting international investors. Green Sukuk follow the same structural principles as conventional Sukuk — they may be structured as Ijarah, Wakalah, Istisna, or hybrid — with the additional requirement that the use of proceeds must comply with green eligibility criteria. These criteria are typically aligned with the Green Bond Principles published by the International Capital Market Association (ICMA) or similar frameworks. An independent external reviewer provides a second-party opinion confirming that the Green Sukuk framework meets the applicable green standards. The governance framework for Green Sukuk typically includes a Green Sukuk Committee (or equivalent) within the issuer that evaluates and selects eligible green projects, manages the allocation of proceeds, and provides periodic impact reporting. This reporting includes quantitative metrics on the environmental impact of funded projects — for example, megawatts of renewable energy capacity added, tonnes of CO2 emissions avoided, or hectares of forest preserved. The dual ethical framework of Green Sukuk — Shariah compliance and environmental sustainability — has attracted a unique investor base that includes both Islamic institutional investors and conventional ESG-mandated investors. This broader investor appeal has sometimes resulted in Green Sukuk achieving tighter pricing than conventional Sukuk from the same issuer, reflecting a 'greenium' — the premium investors are willing to pay for sustainable credentials.