This project aims to research, design and evaluate a dependable decentralized computing and communication platform to support functional and nonfunctional requirements of transactive microgrids with the focus of renewable energies. More specifically, we propose to analyze, leverage and extend DAG-based and chain-based Blockchains, smart contracts and self-adaptive paradigm to realize the proposed platform. Currently, we are building, modelling and optimizing a blockchain-based Web3 platform which aims to ficilitate the peer-to-peer energy trading which will have a great impact on renewable energy industry.