Clean Tech venture investments declined in the third quarter of 2012, according to the MoneyTree report released on Friday by PricewaterhouseCoopers (PWC) and the National Venture Capital Association (NVCA). The numbers reinforce the current trend of decreasing investment in clean tech companies and projects and the inherent challenges of VC backing in the sector. However, many are attributing this drop to a shift in the focus of clean tech investment by private and public entities rather than complete disenchantment in the promising sector.