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Circuitry architecture of the SunHopper-D

The Science of PV Hot Water

Bridging the gap between raw Photovoltaic Harvest and high-efficiency thermal storage through proprietary algorithms and next-gen hardware.

The Knowledge Hub

Technical briefs, system sizing, and the science behind direct PV-to-thermal storage.

The End of Solar Thermal Plumbing

Discover why direct PV wiring outperforms traditional liquid solar thermal systems by completely eliminating freezing risks, fluid leaks, and complex mechanical maintenance.

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Bypassing the Grid: The Zero-Interconnection Advantage

Learn how the SunHopper® technology allows solar contractors and homeowners to entirely eliminate utility permit bottlenecks and interconnection red tape.

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System Retrofitting & Hardware Sizing Guide

A technical engineering guide to sizing your PV array and matching the SunHopper®-D controller with existing standard water heater setups for maximum efficiency and ROI.

Coming Soon

Demystifying NEC Rapid Shutdown for PV Water Heating

A pragmatic guide to meeting NEC 690.12 Rapid Shutdown requirements in direct PV-to-thermal systems, ensuring seamless inspections without utility interconnection.

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Integrated Arc Fault Protection & Recovery

How the SunHopper® architecture utilizes integrated DC Arc Fault Circuit Interruption (AFCI) and UL 1699B compliant 5-retry 24-hour lockout protocols for maximum safety.

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Thermal vs. Lithium: The Ultimate Solar Battery

Why paying for expensive chemical battery arrays to heat water is inefficient. Discover how to unlock the high-density thermal storage potential of the water tank you already own.

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The Complexities of Water Heating

Discover why standard grid-tied solar struggles with water heating due to binary mechanical thermostats, and how SunHopper®-D solves it with proportional power delivery.

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Performance without compromise.
Where standard inverters see a load, SunHopper® sees an opportunity for thermal storage.

14.1 kWh Energy Storage Potential In 64 gallon tank
60-80% Typical Grid Avoidance
Dynamic TOU Rate Scheduling
Universal Simple retrofit

System Architecture

Performance. Safety. Reliability: Solar Inverter Engineering

Our hardware combines high-efficiency Silicon Carbide power conversion with multi-layer safety protocols and passive thermal management, engineered for long life.

SiC Longevity & Thermals

Our use of Silicon Carbide (SiC) semiconductors dramatically reduces thermal stress on internal components. By minimizing energy loss during conversion, we've eliminated the need for cooling fans, removing a common mechanical failure point and ensuring a long service life.

Repairability Architecture

Unlike many manufacturers who "pot" their electronics in permanent resin, GreenPWR utilizes reworkable conformal coatings. This protects against moisture and corrosion while allowing components to be professionally serviced, repaired, or recycled.

Thermal Optimization

A cast aluminum chassis ensures even heat distribution, allowing for passive cooling even at peak throughput.

Integrated Safety Features

Advanced protection includes Arc Fault Detection, RCD, and Ground Impedance monitoring, alongside real-time heater resistance and multi-point temperature tracking.

SunHopper solar inverter internals

Technical Insight

PV Efficiency: The Physics of Cold Success

Standard solar myths suggest that PV systems struggle in winter. The reality is grounded in the Temperature Coefficient: Photovoltaic cells are actually more efficient in cold temperatures.

As temperatures drop, the voltage potential of the panels increases. SunHopper® is engineered to capture this "Winter Bonus," delivering its peak harvest performance precisely during the months when hot water demand is generally at its highest.

Thriving when it's coldest.

While mechanical solar thermal systems risk freezing and heat pumps lose efficiency as the temperature drops, the SunHopper's solid-state DC architecture extracts more power in the cold.

Patent Portfolio

Unique Methods, Protected Assets.

GreenPWR's approach to photovoltaic heating management is legally insulated through high-value patents and exclusive semiconductor implementation techniques.

Granted Patent

US 20220170648A1

Photovoltaic Water Heating Management System and Method.

Active & Enforced

Future Innovation

Pending Portfolio

We maintain multiple active patent applications covering advanced semiconductor switching and adaptive load-matching algorithms.

Real-World Application

Versatility in every Environment.

Technology is only as good as its accessibility. Our system is designed for grid-tied retrofits and isolated off-grid cabins alike.

Off-Grid Dominance

Perfect for remote locations where grid power is unavailable or prohibitively expensive to run.

Urban Resilience

Supplement standard electric heaters in city homes to slash energy bills and reduce grid dependency.

Start Your Calculation
Remote off-grid cabin installation of SunHopper-D PV hot water system