The range of Halloween costumes is vast, and everyone once in a while you get caught off-gaurd by the holiday and don’t have a costume idea ready. If that’s you this year, don’t worry, the Department of Energy has got you covered. In a playful post late last week the DOE came out with its own suggestions for Halloween—or as it calls it: “Enerween”—costumes this year. 

On Oct. 27, just a day before Republican presidential candidates debate in Boulder, Colo. two separate organizations, NextGen Climate (NGC) and TUSK (Tell Utilities Solar won’t be Killed) have launched new advertising campaigns supporting solar and clean energy. The former, by NGC specifically targets Wednesday’s debate. The latter, by former Republican Congressman Barry Goldwater Jr.’s TUSK, targets attacks to rooftop solar power in Louisiana. 

Today (Oct. 26) SunPower unveiled it’s new Helix modular solar system, a system that that’s designed with commercial customers in mind and that takes a page from SunPower’s utility-scale Oasis modular plants. The design shows the company’s growing interest in the commercial segment, a segment of the solar market in the U.S. that’s gaining renewed attention. 

Today (Oct. 23) the Environmental Protection Agency published President Barack Obama’s Clean Power Plan in the Federal Register making its rules to reduce carbon emissions effective. The plan has its supporters—among them clean energy organizations—and its detractors like coal companies and conservative states. 

Today (Oct. 22) the Florida Supreme Court ruled in favor of allowing the Solar Choice Amendment to appear on the state ballot in 2016. The ballot choice will allow voters in the state to make an important decision and choice as to whether or not they should be allowed to install solar power on their homes. It’s the first of two potential solar-power ballots that could be on the state ballot in 2015. 

Yesterday (Oct. 19) President Barak Obama announced that 81 of the U.S.’s leading companies have signed onto the American Business Act on Climate pledge. The companies from Alcoa to GE, GM, International Paper, McDonald’s, Xerox and a host of other companies from a wide range of industries agreed to reduce emissions, increase low-carbon investments, use more clean energy and take other actions on climate change. The pledge helps align the U.S. to take action in the upcoming international climate discussions in Paris. 

Today (Oct. 19) Assistant Secretary of Energy Dr. David Danielson announced that the team from the Stevens Institute of Technology won the Department of Energy’s Solar Decathlon in 2015. Competing in all 10 of the competition’s challenges The New Jersey-based Stevens Institute of Technology earned 950.685 points out of a possible 1,000 to win the competition. 

Last week 1366 Technologies announced that it will build a commercial solar wafer manufacturing facility in Genesee County New York between Buffalo and Rochester. The project represents a $700 million investment in the region and will create roughly 1,000 jobs in the region. 

A new report shows that the cost of rooftop solar power continues to fall. Between July 2014 and June 2015 the cost of residential solar power fell from $3.86 per watt in 2014 to $3.79 per watt in 2015. In terms of system costs that means the cost of an average (7.9 kilowatt) home system fell from  $31,247 in 2014 to $29,225. 

Today (Oct. 14) the California Solar Energy Industries Association (CALSEIA) and Brightline Defense announced the results of a new poll showing very strong support from Californians for rooftop solar power. According to the new survey 90 percent of Californians favor rooftop solar power for generating electricity and 92 percent thought utility should not be able to limit peoples’ ability to install solar on their homes and businesses. The organizations commissioned the poll as the California Public Utilities Commission considers whether or not to continue to require utilities to offer net metering to homeowners and small business owners as it has in the past.