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Which inverter should you purchase for solar?
Choosing the Best 8kW Hybrid Inverter for Your Solar Setup in South Africa
With the rising cost of electricity and the ongoing reality of load shedding, more South Africans are turning to solar power as a long-term energy solution. At the heart of every solar system lies a crucial component — the inverter — and for homeowners or small businesses aiming for reliable power and backup, 8kW hybrid inverters have become the go-to choice.
But with so many brands on the market — from Deye and Sunsynk to Victron, Solis, and newer premium entrants like Sigenergy — how do you decide which 8kW inverter offers the best value, performance, and reliability?
In this blog, we’ll compare five of the most trusted and sought-after 8kW hybrid inverters in South Africa, looking at their technical specs, battery compatibility, smart features, changeover times, pricing, and more — to help you make the most informed decision for your energy needs.
Whether you’re powering your home during outages or seeking full energy independence, this guide will show you what each inverter offers — and which one might be perfect for your solar journey.
Deye 8kW Hybrid Inverter Review – A Smart Choice for Homes and Small Businesses
If you’re considering a powerful and reliable inverter for your home or business, the Deye 8kW Hybrid Inverter stands out as one of the top choices on the market. With flexible power handling, robust monitoring features, and compatibility with a wide range of batteries and panels, this inverter has become a trusted option across South Africa.
What Is the Deye 8kW Inverter?
A versatile 48 V (low-voltage) hybrid that balances strong backup capability, generous PV oversizing, and flexible system design (AC-coupling, generator support, and up to 16 units in parallel). Excellent for South African residential and light-commercial installs needing NRS 097 compliance and robust load support.
The Deye 8kw is a single-phase hybrid inverter capable of managing solar, battery, and grid power simultaneously. It’s designed to give users complete control over energy usage, helping to reduce electricity costs, maximise solar harvesting, and provide robust backup during load shedding.
Whether you’re powering a home with high usage or a small business, the Deye 8kW gives you the tools to move towards energy independence.
Key Specifications – Deye 8kW Hybrid Inverter
Power & Performance
Rated Power (AC): 8 kW (8,000 W) for on/off-grid operation
Overload Capacity: 2× rated power for 10 seconds (off-grid)
Efficiency: Max 97.6%, Euro 96.5%, MPPT >99%
Battery Compatibility
Battery Type: 48 V class (40–60 V), supports Li-ion & Lead-acid
Max Charge/Discharge Current: 190 A (model-specific)
Solar PV Input
Max PV Access: 16 kW
Rated PV Input Power: 12.8 kW
MPPT Trackers: 2 independent MPPTs, 2 strings each (4 strings total)
Voltage Window:
Max: 500 V
Start-up: 125 V
MPPT Range: 150–425 V
Rated Voltage: 370 V
System Integration
Parallel Operation: Up to 16 units (on/off-grid)
AC Passthrough (Grid-to-Load): 50 A
Safety & Compliance
Protection: IP65 enclosure, Type II SPD (DC & AC), anti-islanding
Optional Safety: AFCI (Arc Fault Circuit Interrupter)
Certifications: NRS 097, EN 50549, VDE-AR-N 4105, and more
Monitoring & Connectivity
Interfaces: RS485 / RS232 / CAN
Remote Options: Wi-Fi, GPRS, 4G, or LAN modules
Smart Features: Remote firmware upgrades, remote shutdown
Design & Build
Noise Level: <30 dB (quiet operation)
Cooling: Intelligent air cooling system
Dimensions: 366 × 589.5 × 237 mm
Weight: 26.8 kg
Warranty
Standard 5 years, extendable to 10 years (region and policy dependent)
What Stands Out
Generous PV headroom – Connect up to 16 kW of solar PV to an 8 kW inverter. This ensures excellent production during winter or cloudy days and maximizes daytime self-consumption.
Strong battery performance – Rated for 190 A charge/discharge on a 48 V battery bank, the inverter can comfortably power high-demand applications when paired with quality LFP batteries. (Always size cables and protection correctly for high currents.)
Flexible grid and backup options – Supports parallel operation with up to 16 inverters, AC-coupling for existing PV systems, and diesel generator integration. This makes it highly adaptable for both residential and commercial setups.
Built for South Africa – Compliant with NRS 097, housed in an IP65 weatherproof enclosure, and equipped with full protections including Type II surge protection (DC & AC), RCD detection, anti-islanding, and optional AFCI.
Smart energy management – Allows up to six time periods for charge and discharge scheduling. Remote shutdown and firmware upgrades are supported, reducing site visits and maintenance costs.
Deye – Solarman Monitoring: Full Visibility at Your Fingertips
One of the biggest strengths of the Deye 8kW inverter is the Solarman Smart monitoring platform. The system includes:
🔍 Real-time energy usage
⚙️ System diagnostics and remote troubleshooting
🌍 Multi-site management for businesses or installers
📈 Detailed performance logs and historical analytics
Solarman is accessible via web or mobile app, allowing homeowners or business owners to keep track of their solar investment no matter where they are.
Detailed Review
Performance & Power Handling
Continuous Output – Delivers 8 kW of stable power, with 2× surge capacity (10 seconds) off-grid to start demanding inductive loads such as pumps and compressors during outages.
AC Passthrough – Handles up to 50 A grid-to-load, ensuring plenty of capacity for household or small business demand.
Efficiency – High conversion efficiency of 97.6% (96.5% Euro) keeps losses low, while >99% MPPT tracking ensures maximum yield in variable sunlight.
PV Input & MPPT Flexibility
DC Voltage Window – Operates up to 500 V DC, with startup at 125 V and MPPT range of 150–425 V, making it compatible with standard residential and commercial PV module strings.
Dual MPPTs – Two independent trackers with two strings each (four total) allow flexible array layouts and help minimize shading impacts across different roof sections.
Battery Integration
48 V Compatibility – Designed for lithium-ion (CAN/RS485 BMS) or lead-acid batteries, with adaptive charging strategies that simplify commissioning.
High Current Handling – Supports up to 190 A charge/discharge on the 8 kW model, making it ideal for modern LFP banks. Careful design of cabling, fusing, and busbars is essential for safe operation at these current levels.
Monitoring, Control & Updates
Multiple Interfaces – RS485, RS232, and CAN are standard, with optional Wi-Fi, GPRS, 4G, or LAN for remote connectivity.
Remote O&M – Supports remote firmware updates, parameter setting, and emergency shutdown, reducing the need for site visits and streamlining fleet management.
Build, Protection & Compliance
Outdoor Ready – IP65-rated with intelligent air cooling and a low <30 dB noise level for quiet operation.
Comprehensive Safety – Includes DC reverse polarity, overcurrent, overvoltage, short-circuit protection, insulation monitoring, RCD detection, and built-in Type II surge protection (DC & AC). Optional AFCI provides added fire safety.
Compliance – Certified for South Africa (NRS 097) as well as EN 50549, VDE-AR-N 4105, and other international standards.
Strengths (Pros)
Generous PV oversizing: up to 16 kW DC input on an 8 kW unit, improving yield in poor weather and maximizing daytime usage.
Strong backup performance: 2× surge for 10 seconds, 50 A passthrough, and parallel support for up to 16 units.
Retrofit friendly: AC-coupling enables integration with existing arrays; generator compatibility adds resilience.
Smart operations: Six time slots for charge/discharge scheduling, remote firmware updates, and remote shutdown.
Built for South Africa: Fully compliant with NRS 097, IP65 enclosure, and Type II surge protection.
Limitations (Cons)
48 V architecture means high DC currents (up to 190 A) at full load—demanding careful cable sizing, fusing, and heat management.
Arc-fault protection optional – Confirm AFCI availability for installations requiring strict fire-safety compliance.
PV input ratings – The inverter allows up to 16 kW of PV access but only 12.8 kW rated input; designers must apply the correct figure to avoid clipping or warranty issues.
Best For
Residential and small business installations needing reliable backup, smart energy management, and compliance with South African grid codes.
Retrofit projects where AC-coupling helps preserve existing PV systems.
Expandable systems that may grow in size, thanks to parallel capability of up to 16 units.
Why It’s a Great Fit for Homes and Small Businesses
Handles Large Loads: With its 8kW capacity and 16kW surge, the Deye inverter can run everything from fridges and geysers to small industrial equipment.
Load Shedding Ready: Seamlessly switches to battery or generator power during grid failure.
Flexible Battery Options: Works with leading battery brands including Greenrich, Pylontech, Volta, HinaESS, BSLBATT, and many more.
Cost Efficient: Optimised energy use can significantly reduce grid electricity bills.
Scalable Design: Expandable up to 16 units in parallel (total 128kW) — perfect for growing energy needs.
Final Verdict: Is the Deye 8kW Worth It?
Absolutely. The Deye 8kW Hybrid Inverter is one of the best choices in its class — delivering powerful performance, rich features, and strong compatibility with South African solar systems. Whether you’re aiming to reduce bills, beat load shedding, or go fully off-grid, Deye offers rock-solid reliability backed by a strong local support network.
Sunsynk 8kW Hybrid Inverter Review – Is This the Right Inverter for Your Solar Setup?
If you’re planning to install a solar system or want to reduce your reliance on the grid, you’ve probably come across the Sunsynk 8kW Hybrid Inverter. Known for its reliability, high performance, and flexibility, this model has become one of the most popular choices for both residential and light commercial applications in South Africa and beyond.
In this post, we take a closer look at what makes the Sunsynk 8kW inverter such a strong contender in today’s hybrid inverter market.
What Is a Hybrid Inverter?
A hybrid inverter allows you to integrate solar panels and batteries into your system. It can simultaneously handle:
Power from solar panels
Power from the battery
Grid or generator input
And intelligently switch between them based on your needs
The Sunsynk 8kW model does all this exceptionally well—and more.
Key Specifications – Sunsynk 8kW Hybrid Inverter
- AC Output (continuous): 8 000 W
- Peak Surge Power: 16 000 W (2× for 5 seconds) – great for starting pumps, compressors, etc.
- Max Charging/Discharging Current: 190 A – supports fast battery charging
- Battery Voltage Range: 40 V – 60 V (nominal 48 V system, ideal for most lithium batteries)
- PV Input Power: 10 400 W (4 strings supported: 2 per MPPT)
- PV Voltage Range (per MPPT): 125 V – 425 V – compatible with a wide range of panel layouts
- Efficiency Ratings: Max 97.6%, Euro 97.0%, MPPT efficiency 99.9%
- Connectivity: Built-in Wi-Fi, LAN, RS485, and CAN – ready for remote monitoring and BMS
- Warranty: 5 years standard, extendable to 10 years with certified installation
- Cooling & Protection: IP65 rated, fan-cooled, color touch screen, full surge and overload protection
- Size & Weight: 422 mm × 699 mm × 279 mm; weight: 36 kg
Smart Features and Monitoring
The Sunsynk 8kW comes equipped with remote monitoring features via the Sunsynk Connect platform. You can monitor your battery levels, solar production, grid usage, and more, right from your smartphone or computer.
For installers and technically inclined users, the inverter also supports in-depth settings like time-of-use scheduling, generator control, and detailed system logging.
Battery Compatibility
This inverter is fully compatible with a wide range of popular 48 V lithium-ion batteries, including:
HinaESS
Volta Stage 1, 2, and 3
Dyness
Greenrich
Pylontech
Shoto
- Eenovance
And many more batteries.
It supports both parallel battery configurations and BMS communication via CAN or RS485, making it ideal for scalable systems.
Perfect for Homeowners and Small Businesses
Whether you’re a homeowner looking to beat load shedding or a business owner trying to cut energy costs, the Sunsynk 8kW offers:
Load shifting and backup power
Full grid-interactive capability
Solar-to-battery priority for off-grid or time-of-use optimization
Support for generators as backup or supplement
Sunsynk 8kW Hybrid Inverter – Pros & Cons
✅ Pros
✔️ Excellent Monitoring Platform: Built-in Wi-Fi and Sunsynk Connect app allows real-time data, remote settings adjustment, and multi-site monitoring.
✔️ Great Battery Compatibility: Supports a wide range of 48V lithium batteries (including Pylontech, Greenrich, Shoto, Dyness, HinaESS).
✔️ Versatile MPPT Configuration: Dual MPPTs with 2 strings per MPPT for flexible solar layouts.
✔️ High PV Input and Charging Current: Accepts up to 10.4 kW PV and 190A charge current (depending on firmware/hardware variant).
✔️ IP65 Enclosure: Durable and suitable for outdoor installations.
✔️ Fan-Cooled for Load Handling: Active cooling enables consistent performance under high load.
✔️ Easy-to-Use Display: Full-color touchscreen makes local management intuitive.
✔️ SANS/NRS Compliance: Widely accepted by municipalities and CoC inspectors across South Africa.
❌ Cons
❗ Stock Popularity = Delays: Very high demand in South Africa can lead to stock shortages at times.
❗ App Requires Activation & Setup: Some users may need installer assistance to fully activate cloud features.
❗ Firmware Confusion: Different batches use slightly different firmware versions — updates must be handled carefully.
Final Verdict: A Proven All-Rounder
The Sunsynk 8kW Hybrid Inverter strikes a fantastic balance between power, flexibility, and smart features. It’s one of the most installer-friendly and user-friendly inverters on the market today. With strong support in South Africa, good warranty options, and compatibility with most lithium batteries, this model is a great choice for anyone serious about solar power.
If you’re planning a solar installation for your home or business, the Sunsynk 8kW should definitely be on your shortlist.
Victron MultiPlus-II 8kW Inverter Review
The Victron MultiPlus-II 48/8000/110-100 inverter is a trusted name in the solar and backup power world, especially for those who want precision, long-term reliability, and full control over their energy system. Built for both grid-connected and off-grid applications, this inverter is a perfect fit for high-end homes, lodges, and commercial sites that demand performance and versatility.
Why Consider the Victron MultiPlus-II?
Victron has built a global reputation for quality engineering, robust performance, and unmatched flexibility in system design. The 8kW MultiPlus-II isn’t a hybrid inverter in the same sense as Deye or Sunsynk, but it’s often paired with Victron’s GX devices, MPPT charge controllers, and compatible lithium batteries to create a fully integrated hybrid solution.
Key Features
Output Power: 8 000 W continuous (48 V DC system)
Surge Power: 15 000 W for 3 seconds
Battery Charger: 110 A with advanced charging profiles
AC Transfer Switch: 100 A for grid or generator input
Parallel Operation: Yes, up to 6 units (for 48 kW+ systems)
Phase Configuration: Single-phase or 3-phase support
Monitoring: Integrated with Victron VRM Portal (free), supports remote firmware updates and detailed logging
Inverter Efficiency: 96%
Programmable Relay: For custom automation and alerts
Built-in Anti-Islanding: NRS 097-2-1 compliant (RSA)
Monitoring and Smart Features
Victron’s VRM Portal is one of the most powerful and user-friendly monitoring systems available. Whether you’re on your phone, laptop, or a remote server, you get full access to:
System status and historical trends
Remote configuration of settings and firmware
Fault detection and remote troubleshooting
Energy flow charts and solar production tracking
This makes Victron especially attractive for installers, engineers, and advanced users who want to monitor and fine-tune performance remotely.
Battery Compatibility
The MultiPlus-II supports all major lithium battery brands including BYD, Freedom Won, Pylontech, Shoto, and many more. It also supports custom battery BMS protocols and can be integrated into advanced battery racks or parallel setups. Configuration is handled through VE.Configure software or the GX Device interface.
Build Quality and Protections
Built in Europe (Netherlands)
Extremely robust internal components
Full galvanic isolation
High tolerance to grid fluctuations and unstable input power
Advanced safety protocols, alarms, and automated protections
Passive cooling with large heat sinks (no fans = silent operation)
Size and Installation
Dimensions: 640 × 363 × 206 mm
Weight: 26 kg
Mounting: Wall-mounted (vertical only)
Requires Victron components (e.g., Cerbo GX, SmartShunt, MPPTs) for full hybrid use
Pros and ❌ Cons
✅ Pros:
Exceptional build quality and reliability
Industry-leading monitoring via Victron VRM
Flexible for both off-grid and grid-tied use
Expandable for large residential or small commercial systems
Silent operation
High surge power
❌ Cons:
Requires separate MPPTs and accessories for full hybrid solar usage
Higher setup cost due to modular approach
Not as plug-and-play as integrated inverters like Sunsynk or Deye
Final Thoughts
If you’re building a premium solar and backup solution and want full control over every aspect of your power system, the Victron MultiPlus-II is a world-class inverter. While it may require more components upfront, the trade-off is a flexible, future-proof system with best-in-class reliability, monitoring, and engineering. Ideal for off-grid farms, lodges, high-end homes, and commercial projects.
Solis S6 Pro 8kW Hybrid Inverter (S6-EH1P8K-L-PRO)
The Solis S6 Pro 8kW inverter is part of Solis’s latest single-phase hybrid range, built specifically for residential and light commercial markets. It is designed for 48V battery systems, ensuring compatibility with most lithium battery brands in South Africa such as Greenrich, Shoto, Dyness, HinaESS, and more.
Key Specifications
AC Output (continuous): 8 000 W
Surge Power: 16 000 W (200% for 10 seconds)
Battery Voltage Range: 40–60 V (48 V nominal)
Max Battery Charge/Discharge Current: 190 A
MPPT Inputs: 2 MPPTs with 4 PV strings
Max PV Input Power: 12 000 W
PV Voltage Range: 90 V – 520 V
Efficiency: 97.5% Max; 97.0% Euro
Changeover Time: < 4 milliseconds (ultra-fast for sensitive equipment)
IP Rating & Cooling: IP65; Natural Convection
Size & Weight: 647 × 629 × 252 mm; 28.5 kg
Wi-Fi Monitoring: Optional dongle
Built-in Display: Yes, large LCD
Warranty: 5 years standard
Monitoring & Smart Features – Solis S6 Pro 8kW (S6-EH1P8K-L-PRO)
The Solis S6 Pro supports remote monitoring via SolisCloud, Solis’s proprietary online monitoring platform. While the Wi-Fi or LAN dongle must be purchased separately, the monitoring experience offers real-time data and insights such as:
PV generation, battery status, load usage, and grid export/import
Historical performance data
Alerts and error notifications
System configuration access for installers
Optional mobile app (SolisCloud App) for iOS and Android
🧠 Why it’s good:
The monitoring is simple and user-friendly, though not as advanced as Solarman (used by Deye) or the Sunsynk platform. However, it’s extremely stable, rarely drops connection (once set up properly), and is backed by Solis’s global infrastructure.
Why the Solis S6 Pro 8kW Inverter is a Great Choice
Here’s why this inverter stands out in its price and performance bracket:
✅ Battery Compatibility
Designed for 48V battery systems, it’s compatible with many South African brands such as Greenrich, Shoto, Dyness, HinaESS, Pylontech, and more.
✅ Powerful Performance for the Price
With 12,000W PV input, 200% surge capability, and support for up to 10kW backup load, it punches well above its weight — ideal for both homes and small offices.
✅ Clean Changeover (<4ms)
Ultra-fast changeover ensures computers, routers, and sensitive electronics stay online during load shedding.
✅ Silent & Durable
Fanless design makes it quiet and reduces moving parts — this improves long-term reliability, especially in dusty South African environments.
✅ Excellent Value for Money
Often priced lower than Deye or Sunsynk, while offering comparable performance, especially for budget-conscious homeowners.
Build Quality & Safety
Ingress Protection: IP65 (outdoor-ready)
Cooling: Fan-assisted
Certifications: IEC 62109, IEC 61000, VDE-AR-N 4105, NRS097-2-1 compliant
Anti-Islanding: Yes
Built-in AC/Backup switching: Yes (max 35A backup output)
Size & Installation
Dimensions: 406 x 560 x 215 mm
Weight: 26 kg
Mounting: Wall-mounted (indoor/outdoor)
Recommended Installers: Registered PV GreenCard professionals
Pros (Solis 8kW Hybrid Inverter)
Pros
✅ Works with nearly all mainstream 48V batteries in South Africa
- ✅ In the top brands of inverter companies in the world.
✅ Very fast changeover time (<4ms), great for sensitive loads (routers, PCs)
✅ Competitive price for its feature set
✅ Excellent efficiency and MPPT performance
✅ Surge capability of 200% for 10s (handles motor loads and start-ups well)
✅ Fan-less design reduces noise and increases durability
❌ Cons
❌ No built-in Wi-Fi — external dongle required for online monitoring – but included in packaging
❌ Not as widely supported by all South African installers yet (quickly gaining popularity)
❌ Monitoring portal not as refined as Sunsynk or Solarman (subjective)
🧠 Ideal For
Homeowners looking for a reliable 8kW hybrid inverter with strong local support
Installers needing a 48V hybrid alternative to Sunsynk or Deye
Households with frequent load shedding and sensitive electronics
Final Thoughts
The Solis 8kW Hybrid Inverter is a well-rounded choice for three-phase residential or small commercial applications. If you want solid performance, reliable monitoring, and high-voltage battery compatibility without overpaying for advanced features you may not need, Solis is a value-driven and low-hassle solution.
It’s especially strong where you need a clean, grid-tied system with solar backup — and where simple works better than complex.
Sigenergy 8kW Hybrid Inverter Review
The Sigenergy SigenStor 8kW hybrid inverter isn’t just an inverter — it’s a next-generation energy system designed around AI, modularity, and reliability. Developed by ex-Huawei and industry experts, Sigenergy delivers one of the most seamless energy experiences available in South Africa, especially for smart homes or businesses that want top-tier performance and flexibility.
Key Specifications
AC Output (Continuous): 8 000 W
Surge Power: 1.1× (30s), 1.05× (1 min) – Less than Sunsynk or Deye
Battery Voltage: 256 V nominal (modular high-voltage design)
Battery Capacity: Modular in 5 kWh blocks – scalable up to 48 kWh+
PV Input Power: 15 600 W (3 MPPTs)
MPPT Range: 200–850 V DC (extremely wide)
Efficiency: 98.5%
Cooling & Protection: IP66, fanless, passive cooling, minimalist design
Display: LED status + app interface (no LCD)
Monitoring App: Sigenergy App with AI-powered insights and OTA firmware updates
Size & Weight: Inverter ~39.5 kg; battery modules ~54 kg each
Warranty: 10 years standard
Unique System Strengths
🔁 Battery Redundancy & Auto-Isolation
Unlike most systems, Sigenergy’s modular battery system allows the inverter to isolate a single failed battery module automatically and continue operation with the remaining healthy modules. This prevents total system shutdown, dramatically increasing uptime and reliability.
⚡ Seamless Changeover During Load Shedding
Sigenergy inverters are known for ultra-fast and smooth automatic changeover, comparable to or even better than Victron and Sunsynk. Transition time is effectively unnoticeable (<20ms) — sensitive devices (like routers or TVs) stay online with no flicker.
Sigenergy AI Software
One of the biggest innovations is the Sigenergy AI platform, which:
Learns usage patterns to optimize energy dispatch
Enables time-of-use tariff optimization (charging/discharging based on Eskom pricing slots)
Predicts solar yield using weather data
Offers remote diagnostics, system tuning, and full firmware updates via cloud
Prepares for future integration with EV chargers, smart meters, and virtual power plant (VPP) participation
This means the system improves over time, unlike most inverters that remain static.
✅ Pros
🔄 Modular & Stackable Design: Sleek units stack vertically for plug-and-play expansion (battery + inverter + EV).
⚡ High PV Input (15.6kW): Perfect for over-sizing your array to maximize yield.
🌐 AI-Driven Monitoring: The Sigenergy app offers smart alerts, energy forecasting, and full control.
🔋 Integrated Energy Ecosystem: Includes battery modules, inverter, and optional EV charger in one system.
🔇 Silent Operation: Passive cooling with no fan noise – ideal for indoor spaces.
🧠 Smart Grid Features: Compatible with TOU tariffs and virtual power plant (VPP) services.
🔐 IP66 Rating: One of the most weatherproof systems available for outdoor installs.
🔌 Easy Firmware Updates: Over-the-air (OTA) updates keep your system optimized.
❗ Cons
💸 Premium Price Tag: Among the most expensive 8kW hybrid systems currently available.
🧰 Proprietary Batteries Only: Only works with Sigenergy’s own battery modules – no 3rd-party support.
⚡ Lower Surge Power: Compared to Sunsynk/Deye, it may not handle large inductive startup loads as well.
📦 Stock Availability: Limited supply in South Africa – usually only available fully installed via selected partners.
Ideal For
Sigenergy is best for modern homes or premium small businesses that value aesthetics, smart monitoring, silent operation, and seamless energy management. It’s perfect for clients who want next-gen tech and don’t mind paying for it.
Inverter Changeover Comparison (Grid → Battery)
| Inverter | Changeover Time | Notes |
|---|---|---|
| Solis 8kW | <4 ms | Seamless automatic switchover. Excellent for critical loads (e.g. routers, PCs). Includes 200% surge overload for 10 seconds. |
| Deye 8kW | 5 ms typical (max 10 ms) | Rapid switch between grid and battery. Zero-export function with ~200 ms response time. Strong option for grid-limited installs. |
| Sunsynk 8kW | 5 ms typical (max 10 ms) | Same platform as Deye. Smooth transition ideal for South African load-shedding conditions. |
| Victron 8kVA | ~20 ms | High-speed changeover, UPS-like performance. Keeps sensitive electronics such as servers and medical equipment running smoothly. |
| Sigenergy 8kW | Seamless (<10 ms, AI-controlled) | AI-driven transfer, effectively instant. No flicker or audible relay — feels like a true online UPS. |
Summary:
Best overall for critical loads: Sigenergy (seamless AI-based) and Solis (<4 ms).
Best for load-shedding: Sunsynk and Deye (fast, reliable, designed for SA conditions).
Best for professional-grade UPS switching: Victron (trusted for sensitive and mission-critical equipment).
Pricing & Value for Money Comparison – 8kW Inverters in South Africa
Choosing the right inverter is about more than just features and specs — pricing, value for money, long-term reliability, and after-sales support are equally important. Here’s how the five contenders stack up:
Deye 8kW Hybrid Inverter
Typical Price: ± R27,000 – R34,000 incl. VAT (as of mid-2025)
Value for Money: ★★★★☆
Offers superb functionality at a competitive price — one of the most feature-rich inverters in this price range.Stock Demand: ★★★★☆
Very high in demand in SA, often low in stock due to popularity. Stock levels fluctuate.Reliability: ★★★★☆
Excellent performance; widely used in residential and light commercial installs.After-Sales Support: ★★★★★
Strong support network with a dedicated Deye repair centre in Johannesburg, ensuring quicker turnaround and professional service.Ideal Buyer: Homeowners or businesses wanting serious off-grid capabilities and strong solar-battery integration.
Installation Note: Readily supported by most installers in SA; works with many battery brands (Deye, Greenrich, Shoto, Dyness, etc.).
Sunsynk 8kW Hybrid Inverter
Typical Price: ± R28,000 – R36,000 incl. VAT (Wi-Fi version)
Value for Money: ★★★★☆
Slightly higher cost than Deye but often seen as more polished with a strong ecosystem.Stock Demand: ★★★★☆
High availability, but occasionally tight during peak seasons.Reliability: ★★★★★
One of the most trusted hybrid inverters in South Africa.After-Sales Support: ★★★★☆
Dedicated local presence and training make Sunsynk a strong option.Ideal Buyer: Homeowners or businesses seeking stable performance, app control, and support.
Installation Note: Extremely popular with installers; widely supported for PV GreenCard and CoC compliance.
Victron MultiPlus II 8kVA Inverter (48/8000/110-100)
Typical Price: ± R28,000 – R39,000 (inverter only; excludes MPPTs)
Value for Money: ★★★☆☆
Lacks integrated MPPTs and Wi-Fi. Extra hardware adds to the total cost.Stock Demand: ★★★☆☆
Widely available from Victron-certified suppliers.Reliability: ★★★★★
Victron is world-renowned for reliability, particularly in harsh environments.After-Sales Support: ★★★★☆
Excellent documentation and a loyal installer base.Ideal Buyer: Off-grid users, technical DIYers, or commercial setups needing modular systems.
Installation Note: Requires Victron-certified knowledge; more suited to custom-designed solar systems.
Solis S6 Pro 8kW Advanced Hybrid Inverter
Typical Price: ± R26,000 – R33,000 incl. VAT
Value for Money: ★★★★☆
Offers high-spec features at a lower price than Sunsynk and Deye.Stock Demand: ★★★★☆
Stock is moderate but not always available through all suppliers as the demand is very high.Reliability: ★★★★☆
Very stable units, great with South African battery brands like Greenrich, Dyness, Shoto.After-Sales Support: ★★★★★
Dedicated support from Solis in South Africa with dedicated firmware updates and warranty services.Ideal Buyer: Budget-conscious homeowners or SMEs that want modern features at a great price.
Installation Note: Works well for both grid-tied and hybrid setups. Changeover is now <4ms — suitable for sensitive loads.
Sigenergy SigenStor 8kW All-in-One Inverter
Typical Price: Sold as full solution only (± R100,000+ incl. battery, smart modules & install)
Value for Money: ★★★★☆
Pricey upfront, but offers unmatched integration, AI software, and future-proofing.Stock Demand: ★★★☆☆
Still being scaled in SA; limited availability due to its premium positioning.Reliability: ★★★★★
Industrial-grade reliability, seamless backup switchover, built-in AI diagnostics.After-Sales Support: ★★★★★
Managed directly through Sigenergy-certified engineers/installers.Ideal Buyer: High-end residential users or SMEs wanting a single-vendor smart solar solution.
Installation Note: Must be installed by certified partners. No component sales — full turnkey solution only.
🔚 Final Thoughts on Pricing & Value
| Inverter | Avg Price | Best For | Value for Money | Reliability |
|---|---|---|---|---|
| Deye | R27k–R34k | Balanced performance & value | ★★★★☆ | ★★★★★ |
| Sunsynk | R28k–R36k | Smooth experience, app, SA support | ★★★★☆ | ★★★★★ |
| Victron | R28k–R39k (excl. MPPTs) | Modular off-grid systems, technical users | ★★★☆☆ | ★★★★★ |
| Solis | R26k–R33k | Affordability with high-end features | ★★★★☆ | ★★★★☆ |
| Sigenergy | ±R95k+ (installed system) | Smart homes, premium all-in-one solution | ★★★★☆ | ★★★★★ |
💡 Note: Victron systems require separate MPPTs and other hardware. Full setups often exceed R130k with install. Sigenergy is sold as a full turnkey solution and not per component.
Overall Recommendations
🥇 Best Overall: Sunsynk 8kW Hybrid Inverter
A solid all-rounder with top-tier reliability, fast changeover, local support, app control, and a proven track record. A favourite for residential and SME installations.
💰 Best Value: Deye 8kW Hybrid Inverter
Packed with features like high surge power, app support, and wide battery compatibility at a slightly lower price than Sunsynk — excellent bang for buck.
🏗️ Best for Custom Systems: Victron MultiPlus II 8kVA
For technical users or installers building modular systems, Victron offers unmatched stability and off-grid capability — though more costly due to extra hardware.
📈 Best for Future-Proof Smart Homes: Sigenergy 8kW All-in-One
The most advanced option with AI-driven energy management, seamless failover, high safety, and gorgeous design — ideal for tech-forward homes and businesses.
💡 Best Budget-Friendly Hybrid: Solis S6 Pro 8kW
Modern features like <4ms changeover and great battery compatibility make Solis a great choice for those looking to go hybrid without overpaying.
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