Rowan Energy is building the first national scale Decentralised Smart Grid using blockchain technology. The Rowan blockchain utilises a “useful Proof of Generation” consensus mechanism (uPoG) that validates transactions based on DER energy production. Our novel hardware, the SmartMiner, is professionally installed to energy sources to create a web of decentralised energy nodes and acts as a blockchain validation server and smart meter. Our consensus is deemed “useful” as it generates carbon offset certificates in real time using SmartMiner data. The certificates are of the highest quality of their kind on the market.