Four utilities in the Carolinas proposed solar integration charges as part of their avoided cost proposals. These charges would reduce revenues to solar projects by 5 to 10 percent, potentially making them uneconomic. In addition, the charges would set a dangerous precedent that the new entrant (solar) should be “charged” because the rest of the utility system was inflexible and unable to properly integrate a new, clean resource. GridLab’s expert filed testimony in four cases, strongly criticizing the methodology and results of the utilities proposal, and requesting the commission invalidate the proposed charges.