Honda’s decision to open source its smart home blueprint sounds altruistic, but the Japanese industrial giant’s ulterior motive is found at the heart of the home. The Home Energy Management System (HEMS) is a solar panel array and power storage unit, which can potentially be synced with other smart home ecosystems. HEMS represents Honda’s move into the smart home, and potentially the heart of millions of homes around the globe ‘ a lucrative venture in HEMS sales to third parties. The open source move simply is about maximizing the number of homes that Honda’s system could be installed in. HEMS also has the potential to be retrofitted to existing homes; a much larger market than the amount of new builds…