Accelerating Commercialization of Advanced Energy Efficient Windows

Clear, Energy Efficient Commercial Building Windows

Ubiquitous Energy, Inc.


Redwood City, CA

Recipient Location


Senate District


Assembly District



Amount Spent



Project Status

Project Update

In 2020, the project team continued testing and refining the larger 14" x 20" R&D prototype samples to prepare for external evaluation by certified laboratories. They partnered with two independent certified UL facilities in California to provide performance and durability testing for both solar generation and energy efficiency. Testing was delayed by four months due to COVID-19, concluding in September. The results were promising, showing that the film coating was able to maintain its transparency and functionality. In November, LBNL began test modeling on a window facade installed at their facility for energy efficiency and recorded internal temperature measurements. The team also recorded performance results on the window facade previously installed at their offices, for the year. In 2021, the team will refine the second prototype as necessary and continue market validation, talking with different actors in the window industry and looking for opportunities to pilot the windows.

View Final Report

The Issue

Although premium low-E windows maximize the rejection of excessive heat from entering a building, it usually does so at an unwanted aesthetic tradeoff as seen in the windows having an undesired pink-purple color tint. Additionally, the solar heat being reflected back into the environment is not being captured as useful energy. To date, there is not a market ready window product that effectively prevents heat from entering the building through the windows, generates renewable energy, and is easily manufactured at an attractive price point.

Project Innovation

This project will scale Ubiquitous Energy's ClearView PowerTM technology to meet the size requirements and specifications needed for window production. ClearView PowerTM is a transparent solar coating that, when applied to glass, selectively absorbs and converts non-visible light to electricity while also blocking the infrared light that causes heat gains in buildings. As part of this project, Ubiquitous Energy will demonstrate that the solar coating application can be integrated into a standard glass manufacturing process.

Project Goals

Develop and test three generations of UE’s window prototypes.
Conduct internal and external testing of the UE window prototypes.
Conduct advanced manufacturing R&D to produce UE window prototypes.

Project Benefits

The mass-market commercialization of clear windows that generate renewable energy and premium insulation will provide demonstrable improvements over existing low-E windows currently used in commercial buildings. This will allow California to better design and create zero net energy (ZNE) buildings to meet the state's energy efficiency goals. Furthermore, CVP's solar generating capabilities would broaden the application and generation of solar energy throughout California.

Lower Costs

Lower Costs

The increased insulation and electric generation will lower the operation costs of commercial buildings in California.

Key Project Members

Veeral Hardev

Veeral Hardev

Director of Business Development
Miles Barr

Miles Barr

Ubiquitous Energy



Lawrence Berkeley National Laboratory


Contact the Team