SP1 Solar Pump Inverter
SP1 220V Single Phase Solar Pump Inverter for Wells and Small Farms
0.4kW-5.5kW residential and small-farm solution. Compatible with 90% of single-phase pumps on the market, no phase converter needed.
5,000+
Systems Installed
23+
Countries Served
99.5%
System Uptime
15+
Years Experience
50,000+
Units Supplied
ISO
Certified Production
Choose Your SP1 Model
6 power ratings from 0.4kW to 5.5kW
Match the model to the pump nameplate. Use the interactive sizing calculator below if the pump power is not certain.
| Model | Pump Power (kW) | Input AC (A) | Output AC (A) | Panel Power (kW) | Typical Application |
|---|---|---|---|---|---|
| SP10R7 | 0.4 | 12 | 8 | 2.7 | Small garden, fountain |
| SP11R5 | 0.7 | 16 | 10 | 2.7 | Residential well pump |
| SP1002 | 1.5 | 24 | 14 | 3.0 | Home water supply |
| SP1004 | 2.2 | 30 | 18 | 4.4 | Large home, small farm |
| SP1005 | 4.0 | 37 | 25 | 8.0 | Farm irrigation |
| SP1007 | 5.5 | 48 | 32 | 11.0 | Large irrigation system |
Not sure which model? Use the interactive sizing calculator below.
Interactive Sizing Calculator
Find the right SP1 model and PV array in 30 seconds
Enter your pump nameplate data. The calculator recommends an SP1 model, solar panel count, bill of materials, and estimated system cost.
Your Project Inputs
Your Recommended System
Enter your pump power and click Calculate System to see the recommended SP1 model, solar array configuration, and estimated cost.
Estimates only. SolarSeeker engineers confirm the final model after reviewing the pump nameplate, head, flow, and site conditions.
Why Choose SP1
Three reasons SP1 wins for residential and small-farm projects
Universal Compatibility
- Works with 90% of single-phase pumps on the market
- No phase converter needed (unlike SP2)
- Standard 220V household power compatible
- Compatible with Grundfos, Franklin, Lorentz and most mainstream pump brands
vs. competitors: most controllers require specific pump brands. SP1 works with any standard single-phase pump.
Easiest Installation
- Plug-and-play terminal design
- Auto parameter detection – no manual tuning
- Pre-configured for common pumps
- Installation in under 1 hour
- 3-page manual vs. 50+ pages from competitors
vs. competitors: traditional controllers take days to configure. SP1 powers on and starts automatically.
Best Cost-Efficiency
- Lowest upfront cost in the SP series
- Typical ROI within 18-24 months
- No additional phase conversion equipment
- 99.99% MPPT efficiency = maximum solar harvest
- Zero electricity bills after installation
Savings: average household saves $1,200/year on electricity. SP1 pays for itself in less than 2 years.
Specifications
Complete SP1 technical specifications
Detailed parameters for engineers, EPC contractors, and OEM partners. Full datasheet available for download.
Electrical Parameters
- Input Voltage
- 220V +/-15% (187-253V)
- Input Frequency
- 50/60Hz
- Input Phase
- Single Phase
- Output Phase
- Single Phase
- Output Voltage
- 0-220V (adjustable)
- Output Frequency
- 0-50Hz / 0-60Hz
- Carrier Frequency
- 8kHz (adjustable 2-16kHz)
- Frequency Stability
- +/-0.5Hz
Solar MPPT Performance
- MPPT Efficiency
- 99.99%
- MPPT Voltage Range
- 170-800VDC (industry-widest)
- PV Configuration
- String or Parallel
- Low Solar Behavior
- Soft-start protection
- Maximum PV Power
- Up to 12kW (model-dependent)
- MPPT Tracking Speed
- < 3 seconds
- Cloud Response
- Real-time adjustment
- Startup Power
- From 200W solar input
Protection Features
- Input Protection
- Over/under voltage, phase loss
- Output Protection
- Overcurrent, short circuit, ground fault
- Thermal Protection
- Over-temperature auto shutdown
- Dry-Run Protection
- Minimum 10A current detection
- Overload Protection
- 150% for 1 min, 200% for 2 s
- Low Frequency Protection
- Minimum 10Hz prevents frequent starts
- Float Switch Input
- Water level sensor compatible
- Password Protection
- Prevents unauthorized changes
Quick Inquiry
Get an SP1 model recommendation in 1 working day
Send the basic pump and project information. SolarSeeker engineers reply with the recommended SP1 model and a quotation checklist.
For OEM cabinets or large EPC orders, use the full form on the contact page.
SP1 vs Alternatives
Why SP1 beats traditional solar pumping solutions
Two real comparisons against the most common alternative setups buyers usually consider.
SP1 Direct-Drive vs. Grid Inverter + Grid-Tied Pump
| Factor | Grid Inverter + Pump | SP1 Direct-Drive Solution |
|---|---|---|
| Upfront Cost | Grid inverter ($800) + grid-tied pump ($400) = $1,200 | SP1 (<$650) + standard pump ($300) = <$950 |
| Installation | Utility approval, net metering setup | Plug-and-play, no utility involvement |
| Off-Grid Capability | Requires grid connection | Works anywhere with sunlight |
| Monthly Bills | Still pays grid connection fees | Zero operating costs |
| Independence | Dependent on utility | Complete energy independence |
SP1 Direct-Drive vs. Battery-Based Solar System
| Factor | Battery-Based Solar System | SP1 Direct-Drive System |
|---|---|---|
| Initial Cost | Controller + battery bank = $2,000+ | Controller only < $650 |
| Maintenance | Battery replacement every 5-7 years ($800+) | Zero battery maintenance |
| Complexity | Complex wiring, charging management | Simple direct connection |
| Energy Storage | Chemical batteries (degrade) | Water storage tank (no degradation) |
| Lifespan | Limited by battery life (5-7 years) | 15+ years (no battery to replace) |
Decision Boundary
When SP1 is NOT the right choice
Choose the right product path the first time. If any of the following apply, another SolarSeeker model serves the project better.
You have a three-phase pump
SP1 only drives single-phase pumps. Move to SP2 (phase converter) or SP3 (220V three-phase).
You need more than 7.5kW power
For industrial wells and large commercial systems, see SP4 (380V three-phase, up to 250kW).
Your site already has three-phase power
Three-phase systems are 5-8% more efficient. Choose SP3 for the best efficiency.
Outdoor harsh environment without enclosure
SP1 needs a protected install location. For desert, coastal, or unprotected sites, see SP6 IP65 protection or a solar pump cabinet.
Real Project
SP1 in real installations
A live agricultural irrigation case from Turkiye, plus the application paths SP1 commonly serves.
Turkiye
Agricultural Irrigation System
- Controller: SP1004 / 4kW / 18A
- Pump: 1.5HP single-phase 3-inch submersible
- Solar Array: 2.87kW (7 x 410W panels)
- Results: 85% energy cost reduction, 24/7 water supply
Small Farm Irrigation
SP1 fits smaller daily water demand for crops, orchards, and gardens where pump size, cable distance, and head are moderate.
Irrigation solutions
Residential & Village Wells
SP1 powers single-phase home and village wells, delivering reliable water supply without the recurring cost of grid electricity.
Residential optionsPurchase Options
Choose the package that fits your project
Controller Only
< $650
For customers who have an existing pump
- SP1 Controller unit (select model)
- 3-page installation manual
- 2-year warranty
- Technical support
- Free parameter configuration
Complete System Package
From $2,850
Everything you need in one package
- SP1 Controller (your selected model)
- Compatible pump (pre-matched)
- Solar panels (correctly sized)
- All cables and connectors
- Mounting brackets
- Float switch (water level sensor)
- Installation guide with diagrams
- Save 15% vs. buying separately
OEM / Bulk Purchase
Contact Us
For orders of 10+ units
- Volume pricing available
- Custom labeling option
- Technical training included
- Dedicated account manager
- Priority technical support
- Extended warranty options
Downloads
Datasheets, manuals, and installation resources
Technical Datasheet & Installation Manual
Complete specifications, dimensions, wiring diagrams, and step-by-step installation guide.
Download PDFInstallation Tutorial Video
Real installation demonstration on YouTube – avoid the most common mistakes.
Watch on YouTubeOnline Sizing Calculator
Free interactive tool – enter pump power and get the recommended SP1 model and PV array.
Open calculatorRelated Products
Explore the complete SP series
SP2 Phase Converter
Single-phase input to three-phase output. For three-phase pumps on single-phase sites.
Learn more
SP3 Three-Phase 220V
Best efficiency when three-phase 220V power is available on site.
Learn more
SP4 Industrial 380V
380V three-phase, 0.75-250kW. For industrial wells and high-power pumps.
Learn more
SP6 IP65 Outdoor
Any SP model with weatherproof IP65 enclosure for harsh outdoor environments.
Learn moreFAQ
SP1 220V single phase solar pump inverter FAQ
What size SP1 model do I need for a 2.2kW pump?
For a 2.2kW single-phase pump, choose SP1004 (2.2kW rating, 18A output). Add a 20% safety margin if the pump runs continuously or the well is deep – in that case the SP1005 (4.0kW) provides extra headroom.
Can SP1 run a three-phase pump?
No. SP1 outputs single-phase 220V only. For three-phase pumps, use SP2 (phase converter) or SP3 (220V three-phase).
How many solar panels do I need for SP1?
Total solar panel wattage should be approximately 1.5 x pump power. For a 2.2kW pump, that means a 3.3kW solar array (around 9 x 370W panels). The interactive calculator above computes the exact panel count for your pump.
Does SP1 work on cloudy days?
Yes. SP1 starts pumping from as little as 200W of solar input and adjusts pump speed in real time as solar irradiance changes. On heavily overcast days the output reduces but the system continues running. For climates with long cloudy seasons, increase the PV array by 20-30%.
What pump data should I send for an SP1 quotation?
Send a photo of the pump nameplate plus: kW or HP rating, rated current (A), voltage and phase, total head (m), required flow (m3/h), well depth, cable distance, and project country. A nameplate photo alone is usually enough to start the recommendation.
What’s the warranty for SP1?
Standard warranty is 2 years on the SP1 controller. Extended warranty options are available for OEM and bulk orders. Free technical support and free parameter configuration are included for all customers.
Next Step
Ready to start your SP1 solar pumping project?
Send the pump nameplate, head, flow, well depth, and project country. SolarSeeker confirms the right SP1 model within 1 working day – or recommends SP2/SP3/SP4 if a different path serves the project better.