Efficient Off-Grid Water Heating Powered Directly by Solar Energy
The PV Direct-Drive Electric Water Heater is a simple, plug-and-play solution designed for locations with abundant sunlight and limited access to stable electricity. Powered entirely by solar PV panels, it converts solar energy directly into electric heating without requiring batteries or inverters — delivering hot water instantly and efficiently.
Available in tank sizes from 100L to 300L, and matched with high-efficiency 550W PV panels, this system is ideal for residential homes, farmhouses, cabins, remote resorts, and disaster-relief zones.
With no grid connection required, the system reduces electricity costs and supports sustainable energy goals — making it a top choice for off-grid or solar hybrid heating applications.
Key Features & Benefits
• PV Direct-Drive System – Works without batteries or inverters
• Zero Operating Cost – Purely solar-powered hot water heating
• Smart Matching Design – Sized perfectly for daily family use
• Robust Electric Heating Element – 2kW or 4kW high-efficiency heater
• High-Quality Tank – Stainless steel inner tank with PU insulation
• Fast Heat-Up Time – 4 to 8 PV panels ensure rapid heating
• Easy Installation – Just connect panels to the water heater
• Low Maintenance – No moving parts, long product lifespan
• Off-Grid Ready – Ideal for areas with unreliable electricity
Applications
• Residential homes (off-grid / hybrid)
• Farmhouses and rural buildings
• Solar cabins and eco-villas
• Remote resorts and lodges
• Disaster relief and humanitarian housing
• Schools or hospitals with solar rooftop capacity
• Solar heating demonstration projects
Technical Configuration
Model | Tank Volume | Heating Element | Solar Panel Qty | Total Panel Power |
PD-EWH100 | 100L | 2kW | 4 × 550W | 2.2kW |
PD-EWH150 | 150L | 2kW | 4 × 550W | 2.2kW |
PD-EWH200 | 200L | 4kW | 8 × 550W | 4.4kW |
PD-EWH250 | 250L | 4kW | 8 × 550W | 4.4kW |
PD-EWH300 | 300L | 4kW | 8 × 550W | 4.4kW |
Panel Type: Mono Perc Solar Panel 550W, 25-year performance warranty
Tank Type: Pressurized, stainless steel SUS304 or SUS316
Max Operating Pressure: 0.6 MPa
Insulation: High-density polyurethane foam, 50mm
Optional: LED temperature display, frost protection valve
FAQs / Common Questions from the Market
Q1: Does the system require batteries or inverter?
A: No. It is a direct-drive solution. Solar panels are connected straight to the heating element. No batteries, no inverters, no MPPT controllers needed.
Q2: What happens on cloudy or rainy days?
A: On low sunlight days, heating performance may drop. The system is typically sized to store enough hot water for 1–2 days. Optionally, grid/hybrid backup or AC switch can be added.
Q3: Can I connect the system to the grid as well?
A: Yes, we can provide a dual-source version with a built-in thermostat that allows grid heating when solar input is insufficient.
Q4: Is the installation complicated?
A: Not at all. Just mount the PV panels, run the cable to the water heater, and it’s ready. No complex wiring or control system required.
Q5: Is it suitable for commercial projects?
A: It can be used in small commercial or public service buildings (e.g., dormitories, clinics), but for larger needs, consider our heat pump or hybrid solar-thermal systems.
Efficient Off-Grid Water Heating Powered Directly by Solar Energy
The PV Direct-Drive Electric Water Heater is a simple, plug-and-play solution designed for locations with abundant sunlight and limited access to stable electricity. Powered entirely by solar PV panels, it converts solar energy directly into electric heating without requiring batteries or inverters — delivering hot water instantly and efficiently.
Available in tank sizes from 100L to 300L, and matched with high-efficiency 550W PV panels, this system is ideal for residential homes, farmhouses, cabins, remote resorts, and disaster-relief zones.
With no grid connection required, the system reduces electricity costs and supports sustainable energy goals — making it a top choice for off-grid or solar hybrid heating applications.
Key Features & Benefits
• PV Direct-Drive System – Works without batteries or inverters
• Zero Operating Cost – Purely solar-powered hot water heating
• Smart Matching Design – Sized perfectly for daily family use
• Robust Electric Heating Element – 2kW or 4kW high-efficiency heater
• High-Quality Tank – Stainless steel inner tank with PU insulation
• Fast Heat-Up Time – 4 to 8 PV panels ensure rapid heating
• Easy Installation – Just connect panels to the water heater
• Low Maintenance – No moving parts, long product lifespan
• Off-Grid Ready – Ideal for areas with unreliable electricity
Applications
• Residential homes (off-grid / hybrid)
• Farmhouses and rural buildings
• Solar cabins and eco-villas
• Remote resorts and lodges
• Disaster relief and humanitarian housing
• Schools or hospitals with solar rooftop capacity
• Solar heating demonstration projects
Technical Configuration
Model | Tank Volume | Heating Element | Solar Panel Qty | Total Panel Power |
PD-EWH100 | 100L | 2kW | 4 × 550W | 2.2kW |
PD-EWH150 | 150L | 2kW | 4 × 550W | 2.2kW |
PD-EWH200 | 200L | 4kW | 8 × 550W | 4.4kW |
PD-EWH250 | 250L | 4kW | 8 × 550W | 4.4kW |
PD-EWH300 | 300L | 4kW | 8 × 550W | 4.4kW |
Panel Type: Mono Perc Solar Panel 550W, 25-year performance warranty
Tank Type: Pressurized, stainless steel SUS304 or SUS316
Max Operating Pressure: 0.6 MPa
Insulation: High-density polyurethane foam, 50mm
Optional: LED temperature display, frost protection valve
FAQs / Common Questions from the Market
Q1: Does the system require batteries or inverter?
A: No. It is a direct-drive solution. Solar panels are connected straight to the heating element. No batteries, no inverters, no MPPT controllers needed.
Q2: What happens on cloudy or rainy days?
A: On low sunlight days, heating performance may drop. The system is typically sized to store enough hot water for 1–2 days. Optionally, grid/hybrid backup or AC switch can be added.
Q3: Can I connect the system to the grid as well?
A: Yes, we can provide a dual-source version with a built-in thermostat that allows grid heating when solar input is insufficient.
Q4: Is the installation complicated?
A: Not at all. Just mount the PV panels, run the cable to the water heater, and it’s ready. No complex wiring or control system required.
Q5: Is it suitable for commercial projects?
A: It can be used in small commercial or public service buildings (e.g., dormitories, clinics), but for larger needs, consider our heat pump or hybrid solar-thermal systems.
