John Barrie

Our first DIY solar LED light. The cost of a single 1 watt LED bulb was $25 which was too expensive for our project so we made our own.

Carlos working on the solar LED design.

The first home to receive our solar LED lights. This turned out to be a life changer. People save about $5.00 per week, money once spent on candles and kerosene for lamps.

Back in 2007–2008, we teamed up with engineers from Xela Teco, to design and build our own LED lights—at a fraction of the cost of buying them online. Our solar light fixture was made using recycled water bottles, aluminum, and a custom circuit board.

29.05.2025 14:20 — 👍 0    🔁 0    💬 0    📌 0

We’re still installing solar and water filters on homes in very remote parts of Guatemala through the end of the month. We will have a special video in February.

09.01.2025 19:28 — 👍 1    🔁 1    💬 0    📌 0

Volunteers install solar panels on a nonprofit office in Guatemala

I work in the field of renewable energy for humanitarian development with The Appropriate Technology Collaborative. My focus is on designing innovative technologies that empower the world’s most vulnerable communities. We’ve developed many technologies our 20 years if service.

07.01.2025 22:40 — 👍 1    🔁 1    💬 1    📌 0