About us


Helena Arias Casals

Helena Arias Casals is a mechanical engineering, electronic engineering and physics student at the Universitat Politècnica de Catalunya (UPC) and the Universidad Nacional de Estudios a Distancia (UNED). She has participated in various research programs for students such as Joves i Ciència (Youth and Science) from Fundació Catalunya La Pedrera, or the International Science Summer Institute (ISSI) from the Weizmann Institute of Science in Israel. She is currently working at HP, combines her studies with her sporting career in Olympic shooting. Together with Dorothy, she is developing her first start-up: Light Pills.

Dorothy Ann van der Ent Facerias

Dorothy Ann van der Ent is an aerospace engineering student at the Universitat Politècnica de Catalunya (UPC). She has also had the opportunity to be part of various science programs for students such as Joves i Ciència (Youth and Science) from Fundació Catalunya La Pedrera, the International Science School for Young Physicists (ISSYP) from the Perimeter Institute in Canada, or the International Astronomical Youth Camp (IAYC) in Germany, organized by the IWA. She has recently started her carreer in consultancy as an Aviation Business Analyst Intern at ALG by Indra, while she works in developing Light Pills.



Innovations are no longer valid if they are not sustainable. Therefore, Light Pills actively works towards the achievement of the UN Sustainable Development Goals.

Our products are directly nurtured from solar energy and their structures are made of recycled plastics, giving plastic bottles a second life. Moreover, when a Light Pill stops working, its components can be recycled, enclosing the cycle.


Light Pills aims to provide access to electricity and potable water, two basic rights, to every single person in the world.

With an innovative business model and an affordable price, Light Pills gives a new opportunity, specially to small communities, to step forward and grow in a sustainable way.


Light Pills helps poor countries make a new step in development, reducing the social gap between the wealthy and the poor people around the globe.

For each Light Pill + sold in a developed country, a Light Pill Basic is donated in a developing country, making the “wealthy” costumer directly connected to the reality and an active individual in the fight for equality.