Optivolt, a San Francisco-based solar power electronics company, announced a $32 million Series A funding round on October 21, 2026. The round was led by VXI Capital, with participation from RA Capital, Valo Ventures, and Atlas Innovate. The financing brings the company’s total capital raised to $42 million.
Founded in 2017 by Rohit Kalyanpur, who serves as CEO, Optivolt develops integrated power electronics designed to improve solar panel performance under varying environmental conditions. Its technology enables solar modules to manage energy production at the cell-group level rather than relying solely on conventional panel architectures.
The company’s core product, Power Balancer, is embedded directly into solar panels and redistributes electrical energy between groups of cells in real time. The system is designed to reduce power losses caused by partial shading, dirt, weather conditions, and uneven cell degradation.
Power Balancer replaces conventional bypass diodes and incorporates monitoring and rapid-shutdown capabilities within the solar module. According to Optivolt, this architecture can reduce or eliminate the need for separate power optimizers, microinverters, and rapid-shutdown devices, depending on the solar installation’s configuration.
Optivolt reported that more than 20,000 solar panels incorporating Power Balancer technology had been shipped. The company also reported holding 19 issued patents, with another 27 patent applications pending, alongside UL certifications covering its integrated electronics, junction-box enclosure, rapid-shutdown system, and solar module safety.
The new funding will support increased manufacturing capacity and broader deployment of Optivolt’s technology across residential, commercial, and utility-scale solar installations. The company is also targeting solar projects intended to supply electricity to AI data centers as demand for large-scale power infrastructure grows.
