In Solar, John Gilluly at The Chip Stock Trader let us know that help was on the way for solar stocks. An interesting take on the solar installation business with a stock pick – Akeena Solar (AKNS). But Keith Johnson at the WSJ’s Environmental Capital suggested everyone should put away the champagne: the much awaited bill extending tax credits for solar and wind, it seems, may not be passed this session. Failure to agree on a bailout plan over the weekend would just about fully re-load the gun for solar shorts to get back to work next week. In Clean Transportation, Don Dion at Seeking Alpha let us know of a new ETF tracking the clean transportation trend – the PowerShares Global Progressive Transportation (PTRP) Research Recap informed us that natural gas was going to play a stronger role in many markets. Notice how the article does not discuss uses related to road transportation. Given growing prevalence in power generation, is it reasonable to believe natural gas can also be a transportation fuel? In Environmental Markets, Environmental Leader informed us that the RGGI was holding its first mandatory auction. In Waste-to-energy, Nick Hodge at Green Chip Stocks talked about making tons of cash from tons of trash. Waste-to-energy, because of the potential for generating carbon offsets, is an interesting area to keep an eye on. The Week In Cleantech is a collection of our favorite stories from the past week generated by our Cleantech News service. Register your site with us if you want your articles to appear here.