Renewable energy infrastructure expansion has demonstrated the requirement for data management systems that maintain both security together with scalability, and resiliency. Centralized cloud storage systems dominate the market but struggle with multiple severe limitations, such as cyberattacks against data centers and exclusive control of data, and performance problems with diverse energy dataset types. The investigation in this chapter provides an extensive analysis of decentralized cloud storage systems that combine blockchain technology with the Inter Planetary File System (IPFS) to resolve storage issues. The research investigates DCS implementation through technical designs, along with use cases supporting the evaluation of policies to show how this infrastructure boosts renewable energy network accessibility while securing and making data transparent. The analysis investigates regulatory compliance, together with scalability issues and quantum resistance, followed by solution implementations.