From the Associated Press — DTE Energy is planning to buy three new wind parks in Michigan that are expected to help lower carbon emissions from the utility’s operations. The Detroit-based utility says Michigan’s Public Service Commission has granted conditional approval for the proposed purchase. Two of the wind parks are in mid-Michigan’s Isabella County. They are expected to begin commercial operation next year. The third park will be in Delta County in Michigan’s Upper Peninsula. Together, they are expected to increase DTE Energy’s renewable energy portfolio by nearly 50%. The utility says the projects will offset nearly 890,000 metric tons of carbon emissions annually. DTE Energy Chief Executive Jerry Norcia says investing in renewable energy is a key part of the utility’s commitment to reduce carbon emissions by at least 80% by 2040.