Build Solar has developed an innovative building integrated photovoltaic " Solar Squared" that provides combined benefits of electricity, thermal insulation and daylighting Solar Squared integrates standard photovoltaic cells into an modified glass block design and trnasforms it into a energy harvesting construction material. The technology uses optical solar concentrator to redirect light onto smaller sized solar cells. Different designs of the product allow a variable range of electricity and daylighting. The flexible modular design provides easy integration within walls, skylights, sloped roofs etc. The key innovation is a highly efficient optical design tested and validated by University of Exeter.