Neal Dikeman and I aren't the only ones who think General Electric is the unsung leader of greentech. This week's issue of Exame, a leading Brazilian business magazine, featured a number of stories on A Economia Verde, including one that proclaimed GE CEO Jeff Immelt to be "o executivo mais verde do mundo." According to the article, Immelt's ongoing investments and acquisitions in the sector have started paying off, so that "o green está começando a se transformar em green." What's interesting about GE's approach, compared to the startups and new ventures we tend to cover at GTM, is that GE has largely gone through its greentech transition without reinventing the wheel. Instead, it has invested in efficiency gains in its product lines and acquired a number of greentech companies that fit within its traditional business model. It has taken stakes in some new companies, like A123 batteries, which are closely aligned with its existing technology focus. After the jump, GE no Brasil and some of Neal Dikeman's favorite GE moments.