About Us

Founded in 2001 and headquartered in Vancouver, Canada, Day4 Energy is a growing, global brand delivering innovative photovoltaic (PV) technologies, products, services, and manufacturing solutions for the production of solar modules in residential, commercial and utility-scale applications. Based on patented innovations, superior product quality, and exceptional in-field performance, Day4 Energy is extending the reach of solar energy. The company is listed on the Toronto Stock Exchange under the symbol “DFE”.

We have four areas of focus:

Solar Modules
The research, design, marketing, and sales of technologically advanced solar PV modules

Solar Projects
Consulting, design, project management, operations, and maintenance services for large-scale solar projects.

Day4 solar systems
An innovative, industry-first licensing program for the manufacture of PV cells and modules built with patented Day4 technology.

Solar Equipment

Through our wholly-owned subsidiary, ACI eco-Tec Gmbh, the design, manufacture, and supply of state-of-the-art production automation and process equipment for the photovoltaic industry.

The core of our technology is the patented stay-powerful Technology that interconnects solar electric cells and collects the power they generate. This innovation is a direct replacement of the conventional, high temperature solar cell soldering process.

Client Since 1995

Shade reduces the efficiency of solar PV modules. Day4 Energy’s work-smart Technology enables optimum performance by maximizing the energy yield, even when the module is shaded by trees and buildings or partially covered by leaves, moss, snow or dirt.

Client Since 1995

Solar photovoltaic modules perform well under ideal conditions – particularly during their initial years of operation. Challenging environmental conditions over 25 years of use may significantly affect the performance of conventionally built modules. It’s important to choose a quality solar PV module to make the most of your investment.