Articles in this issue cover the following topics: Economic Analysis of a Hybrid Energy System for Rural Electrification for the Hasik Area, Oman; Solar Power for Resilient Healthcare Systems in Nigeria: Regulatory, Financial and Organizational Options for Sustainable Business Models; Exploring the Nexus between Entrepreneurial Activity, CO₂ Emissions, and Growth; Energy Supply, Public Debt, and Economic Growth: Causality Analysis for a Panel of OECD European Countries; How Willingness to Pay (WTP) Matters in the Determination of Natural Resource Prices within the Context of Sustainable Development; and Access to Electricity in Sub-Saharan Africa: The Regressive Effect of Tariff Structures on Urban and Rural On-Grid Households.