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HOME ENERGY OPTIMIZATION

Would you like to reduce energy bills, take control of your power usage, and prepare for home electrification? We integrate smart technologies like the SPAN smart panel, high-efficiency heat pump water heaters, and Level 2 EV chargers to maximize efficiency and even work seamlessly with other backup power solutions.

Why GTRE >
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CUTTING EDGE PRODUCTS - EXPERT INSTALLATION

Discover smarter ways to power your home and save money with a GTRE Home Energy Optimization System.

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SPAN Panel

The SPAN Smart Panel is an intelligent electrical panel that replaces your traditional breaker panel. It provides real-time monitoring and control over every circuit in your home, allowing you to safely add EV chargers and heat pump water heaters without expensive service upgrades. Benefits include better energy management, overload protection, seamless solar and battery integration, and can be controlled right from your smart phone.

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SANCO₂ Water Heater

The SANCO₂ Heat Pump Water Heater is a highly efficient split-system water heater that uses CO₂ refrigerant to pull heat from the outdoor air. It delivers up to 80% energy savings compared to traditional electric water heaters while providing excellent hot water performance, even in cold climates. Benefits include significantly lower energy bills, fast recovery, reliable cold-weather operation, and seamless compatibility with solar power.

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EV Chargers

EV Chargers deliver fast, reliable home charging for your electric vehicle. It charges most EVs up to 7 times faster than a standard outlet, typically adding 25-40 miles of range per hour. You can charge your car overnight at home, use smart scheduling to take advantage of off-peak electricity rates or solar production, and safe, app-controlled operation that can integrate seamlessly with your SPAN panel and solar system.

GENERAL HOURS

Monday - Friday    9am to 5pm

P.O. Box 2226     Johnson City, TN 37605

423-422-4348

© 2026 Greene Tech Renewable Energy LLC

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