The struggle in the clean tech industry has been tough, but their managing to pull through. Clean tech companies are becoming more refined and resourceful by applying approaches such as reducing procurement costs and positioning lean principles in manufacturing. An entire new industry had been created around the use of information technology to reduce energy consumption. Bloomberg calculated that it all adds up to $310 billion in investments last year. As clean-tech businesses continue to move on up, there will be additional opportunities to improve and there is plenty of hope for the clean-tech industry to prosper in the years coming.