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Florida Resident Creates Solar-Powered Off-Grid Cooling System

3/31/2026

Summary

Story summary

A Florida resident developed an off-grid cooling system using solar energy to store ice.
The setup includes three solar panels, a charge controller, a lead-acid battery, and a microcontroller powering a refrigerator compressor.
Water is frozen in a 2-gallon bucket to store about 2.5 million joules, releasing cooling through a glycol loop.
Glycol circulates to an automotive radiator, delivering cooling comparable to a small air conditioner and enabling off-grid use.

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Story summary

A Florida resident developed an off-grid cooling system using solar energy to store ice.
The setup includes three solar panels, a charge controller, a lead-acid battery, and a microcontroller powering a refrigerator compressor.
Water is frozen in a 2-gallon bucket to store about 2.5 million joules, releasing cooling through a glycol loop.
Glycol circulates to an automotive radiator, delivering cooling comparable to a small air conditioner and enabling off-grid use.