Baltimore Gas & Electric had some good news for smart meter boosters. The utility announced Monday (PDF) that state regulators have changed their minds and re-approved a $815 million smart meter project, meaning BG&E won’t have to give up $200 million in Department of Energy grants for the project. The Maryland Public Service Commission had questioned whether the project would saddle BG&E customers with higher than expected costs, as well as BG&E’s claim that the smart meters will save customers $2.5 billion over the long haul. Smart meters have been getting a bad rap lately, with Pacific Gas & Electric and Oncor facing lawsuits from customers in California and Texas, and the Hawaii Public Utilities Commission rejecting a big project. Now big BG&E partner Silver Spring Networks will have a chance to prove it can scale up production fast enough to meet the utility’s needs.