Worcester Student Builds Low-Cost Solar Tracker

A 13-year-old inventor created a $25 solar device using water and gravity to increase panel voltage.

Updated on Oct. 29, 2026 in Energy

Bold vector editorial illustration of a simple solar panel tilt mechanism, utilizing wooden frames and water-filled containers to demonstrate renewable energy efficiency. — A 13-year-old student at Worcester Academy has developed a $25 solar tracker that uses gravity-fed water to increase panel voltage by 20%. AI Illustration. Upload story photo >

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Worcester Academy student Jason Chang developed a functional solar tracker for just $25 using simple, recycled materials. The device uses a water-based gravity system to tilt solar panels, resulting in a 20% voltage increase.

Why it matters

The inventor aimed to create a low-cost alternative to expensive commercial trackers to improve fixed panel efficiency without requiring additional electricity. This innovation offers a potential path for boosting renewable energy production with minimal investment.

The tracker achieves a 20% voltage increase compared to fixed panels using only $25 in materials, significantly undercutting commercial systems that cost $500 to $1,000. Chang is now working to resolve performance issues in cold and hot weather.

The players

Jason Chang

He is a 13-year-old student at Worcester Academy and one of 55 named National STEM Champions.

Worcester Academy

This is a private school in Worcester, Massachusetts, where the inventor conducts his research.

The details

The tracker uses containers on a rocking frame where water drips into a bucket, causing the panel to tilt as the user initiates the flow. While effective, the current design remains vulnerable to environmental conditions that impact water consistency.

September 30, 2026: California legalized plug-in solar.
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The Big Picture

This innovation benchmarks against commercial single-axis solar trackers, which generally provide a 25% to 35% production increase. By utilizing gravity, the project bridges the gap between manual setups and automated dual-axis systems that offer 40% efficiency gains.

This project demonstrates that significant efficiency gains in renewable energy can be achieved through low-cost, repurposed components. Future iterations intended for year-round use could provide a blueprint for affordable residential solar optimization.

The takeaway

Innovation does not always require high-end industrial hardware, as demonstrated by this low-cost, water-powered tracking system. Future designs will need to address environmental limitations to ensure these efficiency gains can be maintained in varying climates.