Optivolt Labs
Techstars '18Techstars '18Burlingame, US · Founded 2017 · 33 employees on LinkedIn · 5 known investors
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Optivolt designs intelligent home solar systems that optimize energy generation in real time, claiming up to 50% more usable energy than traditional systems. The company serves homeowners seeking to reduce electricity costs and carbon footprint through renewable energy.
Also known as Optivolt · Optivolt Labs, Inc.
Founders & leadership
Optivolt Labs was founded in 2017 by Rohit Kalyanpur.
Investors · 5
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Company profile
researched Sep 2026Optivolt Labs is a solar technology company founded in 2017 that develops power electronics embedded in solar panels to address shading losses and the cost and complexity of conventional solar equipment. Its core component, described as the Balancer, sits inside the panel and redistributes current from stronger to weaker zones so that power continues to flow and energy capture is maintained; the company's patented architecture has also been described under the name Pulse.
The company's current commercial focus is residential solar. Its home system is marketed as adapting in real time to deliver more usable energy, with universal compatibility with third-party batteries and inverters, a mobile app for monitoring savings and system performance, and a 30-year warranty. Published panel specifications list a 450 W rated power, 23.1% module efficiency, 108 N-type mono M10 half-cut cells, dimensions of 67.8" x 44.6" x 1.4", a weight of 47 lb (21.3 kg), a black anodized aluminum frame with 3.2 mm anti-reflective glass, an operating range of -40°F to +185°F, 1,500 VDC maximum system voltage, and UL 61730 and UL 1703 certification with a Type 1 fire rating.
Earlier positioning targeted self-charging applications: a scalable technology stack for integrating solar into battery-powered products such as drones, electric vehicles, mobile electronics, sensors and other IoT devices, plus 5G infrastructure, military equipment and robotics. The company has described its technology as battle-tested with defense customers including the U.S. Air Force, the Ukraine military and military contractors.
Founding story
Rohit Kalyanpur began building solar-powered phone cases in high school to charge his phone with ambient light, and met co-founder Paul Couston, along with other early team members, at the University of Illinois through technology entrepreneurship programs. Couston and Kalyanpur founded Optivolt Labs in the summer of 2017 and used funding and lab space from the university's iVenture Accelerator to develop and release a case that converted indoor and outdoor light into longer phone battery life. Facing a saturated and price-sensitive phone-case market, customer education hurdles and legal complications, both founders put their studies on hold to pursue the company full time.
Business model
Optivolt develops and sells solar hardware built around its own power electronics. The consumer-facing home solar offering is sold directly through the company's site, which includes an ordering flow and a savings calculator, alongside a channel for installers. Earlier in its history the company described its customers as enterprises operating large fleets of battery-powered products, to whom it supplied a solar integration technology stack intended to cut the operational cost of charging those fleets.
Revenue comes from the sale of solar hardware: home solar panel systems ordered directly by homeowners and through installers, and, historically, solar-integration hardware supplied to enterprise and OEM customers plus government contracts such as the Air Force award for a deployable solar power system.
Traction
Reported traction includes a $750,000 U.S. Air Force award in 2019 for a deployable solar power system for space communications, deployments the company describes as battle-tested with defense customers including the U.S. Air Force, the Ukraine military and leading military contractors, and a patent portfolio of eight issued and 27 pending patents. Headcount grew from six people in 2019 to a listed range of 11-50, reported as approximately 32 in an August 2026 data profile, with estimated annual revenue of $1M-$10M.
Latest developments
Optivolt's current public positioning centers on an intelligent home solar system with built-in electronics that adapts in real time, supported by published module specifications, an ordering flow for homeowners and a dedicated installer channel.
▸Full profile — market position, technology, go-to-market, geography, history, risks & controversies
Market position
Optivolt is a small to mid-sized company operating in the utilities and solar sector, listed at 11-50 employees with an approximate headcount of 32 and estimated annual revenue of $1M-$10M in an August 2026 data profile. Companies identified as similar include SunPower, JA Solar, LONGi Solar and Seraphim Solar, all substantially larger by headcount and revenue band. Optivolt competes on panel-level power electronics and shade tolerance rather than scale manufacturing.
Optivolt's stated differentiator is intra-panel power electronics: the Balancer redistributes current between cell zones inside the module rather than relying on external microinverters or optimizers. Against a leading market player, the company's technology is described as delivering up to six times higher real-world power output, about 40% lower equipment costs, roughly 50% faster installation, four times fewer failure points, and elimination of hotspots; a separate company description cites up to 60x more power in shaded and non-ideal conditions. The approach is protected by a patent portfolio reported as eight issued patents and 27 pending. In its earlier enterprise positioning, the company argued that most solar-integration vendors addressed only narrow parts of the stack for small-scale applications, while Optivolt built a generalized stack spanning power-management hardware and deployable mechanical panel designs compatible with OEM products.
Technology
The company's technology is panel-embedded power electronics. The Balancer is a device placed inside the solar panel that redistributes current from stronger to weaker cell zones so power continues to flow and output is maximized, reducing shading losses and eliminating hotspots while cutting the number of failure points. The company also refers to a patented power electronics architecture called Pulse. The patent portfolio is reported as eight issued patents and 27 pending. Commercial panels are specified at 450 W with 23.1% module efficiency using 108 N-type mono M10 half-cut cells, a 1,500 VDC maximum system voltage and a -40°F to +185°F operating range, certified to UL 61730 and UL 1703. Systems connect to third-party batteries and inverters and are monitored through the Optivolt app. Corporate tooling reported includes Squarespace, Amazon Simple Email Service, Google Workspace, Microsoft 365, SendGrid, Stripe, Vercel and 1Password.
Go-to-market
The company sells home solar directly online, with an ordering path, a savings calculator and a downloadable panel spec sheet, and maintains a separate track for installers. Historically it pursued enterprise and OEM integration deals with owners of battery-powered fleets, and government and defense channels, including a U.S. Air Force contract and work with military contractors.
Homeowners buying residential solar and the installers who deploy it, plus earlier and adjacent segments: enterprises operating fleets of battery-powered products, OEMs integrating solar into drones, EVs, mobile electronics, sensors and IoT devices, 5G infrastructure and robotics, and defense customers. The company has also cited RVs and vans, sailboats and yachts, smart devices, tiny homes, commercial buildings and military bases as application areas.
Geography
The company is associated with California locations including San Francisco, Burlingame, San Mateo and Carlsbad, and a profile lists its headquarters as San Mateo, California. It originated at the University of Illinois and went through Techstars Chicago. Defense-related deployments cited by the company include the U.S. Air Force and the Ukraine military, and one data profile reports employees across North America and Europe.
History
Paul Couston and Rohit Kalyanpur founded Optivolt Labs in the summer of 2017 while students at the University of Illinois, using funding and lab space from the university-run iVenture Accelerator to release a solar phone case. The venture reached a low point by winter 2018 with no customers and no remaining cash; after applying to 15 accelerator programs, the pair were accepted by Techstars Chicago, received $120,000 in seed funding and redirected the technology toward extending drone battery life, at which point the company employed three other full-time engineers. In November 2019 the U.S. Air Force awarded the then six-person company $750,000 for a deployable solar power system for space communications. The company subsequently broadened into power electronics for IoT devices, 5G infrastructure, military equipment, robotics and EVs, and later into shade-tolerant panels for RVs and vans, boats, residential and tiny homes, commercial buildings and military bases, before marketing an intelligent residential solar system.
Risks & controversies
Performance claims are largely self-reported and conditional: the company notes that its advertised advantage of up to 50% more annual energy depends on system size, equipment and shade scenarios, and headline comparisons ranging from 6x to 60x greater output in shaded conditions are company-stated. The business has also changed markets repeatedly, from consumer phone cases to drones, then to IoT, defense and EV applications, and now to residential solar, and it nearly ran out of money in the winter of 2018. Third-party aggregator figures for funding, revenue and headcount vary and are estimates. Note that a Dutch power-quality company also named OptiVolt, founded in 2009 in Delft and acquired by Fudura in 2024, is a separate business.
Compiled by commissioned research from 9 cited public sources — announcements, filings, and press listed under research sources below.
Key figures
latest reportedCompany-reported or press-reported figures, each dated to when it was claimed — not independently audited.
Related companies · 2
Companies working in the same space as Optivolt Labs.
Non-dilutive funding · 2 SBIR/STTR awards
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| U.S. Air ForceAir Force | Phase II | 2020 | $999K |
| U.S. Air ForceAir Force | Phase I | 2019 | $50K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
Timeline · 4
launches, deals, and filingsThe Air Force awarded Optivolt Labs, then a six-person company, $750,000 for a deployable solar power system for Air Force space communications.
$750K source ↗
After the phone-case product failed to gain traction, the founders applied to 15 accelerator programs and were accepted by Techstars Chicago, receiving $120,000 in seed funding and pivoting the solar-to-battery conversion technology toward drones.
$120K source ↗
Optivolt shifted from consumer solar phone cases to applying its solar-to-battery conversion technology to extending drone flight time and enabling recharging after landing.
Using funding and lab space from the University of Illinois iVenture Accelerator, the founders developed and released a phone case that converted indoor and outdoor light into additional battery life.
Dated company events from announcements, filings, and press; legal rows summarize public dockets and regulator releases.
▸Research sources · 9
primary sources listed
- Optivolt Labsoptivolt.com · web
9 public sources were cited for this profile; the first-party ones are listed here.
Frequently asked questions
- What does Optivolt Labs do?
- Solar technology company whose in-panel power electronics reduce shading losses in home, mobile and defense solar systems.
- Who founded Optivolt Labs?
- Optivolt Labs was founded by Rohit Kalyanpur in 2017.
- Who are Optivolt Labs's investors?
- Optivolt Labs's investors include City Light, Pure Ventures, Streamlined Ventures, Techstars, Matrix.
- Where is Optivolt Labs headquartered?
- Optivolt Labs is headquartered in Burlingame, US.


