Box Diagnoses Solar Underperformance IntelliStrong is the newest addition to PV Powered’s line of smart-string combiner boxes. It enables the quick diagnosis of system-level underperformance caused by failed solar modules, shading or soiling. Offered in 8- and 16-string versions, the box uses the industry-standard Modbus communications protocol, which makes it compatible with PV Powered’s third-party data-monitoring partners. (541) 312-3832 /