GivEnergy Gen 3 Hybrid Inverter — 3.6kW, 5.0kW & 8.0kW Explained
The GivEnergy Gen 3 Hybrid is a DC-coupled inverter that connects solar panels directly to its MPPT inputs — no intermediate AC inverter — delivering higher efficiency and better energy management than AC-coupled alternatives. Available in 3.6kW, 5.0kW, and 8.0kW. Requires external GivBat battery (sold separately) and supports grid services, EPS blackout backup, and time-of-use tariff scheduling.
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DC-coupled hybrid inverter with built-in MPPT
The GivEnergy Gen 3 Hybrid is a DC-coupled inverter that connects your solar panels directly to its MPPT inputs — no intermediate AC inverter needed. Energy flows through a single conversion path from panels to home, delivering higher efficiency and faster response than AC-coupled alternatives.
DC-coupling advantage
Panels connect directly to inverter MPPT inputs. Energy flows through a single conversion: DC (panels) → inverter → AC (home/grid/battery). No intermediate AC inverter means lower losses and faster system response.
MPPT technology
MPPT continuously monitors panel voltage and adjusts the inverter's input to extract maximum available power at all times — particularly valuable in overcast or partially shaded conditions.
Battery not included: All Gen 3 Hybrid models require an external GivBat battery, sold separately. The inverter manages charging and discharging; the GivBat stores energy. This modular design lets you upgrade battery capacity without replacing the inverter.
Gen 3 Hybrid: model comparison
Three models covering small homes to three-phase properties with large solar arrays.
| Specification | 3.6 kW | 5.0 kW | 8.0 kW |
|---|---|---|---|
| Output power | 3,600 W | 5,000 W | 8,000 W |
| Max PV input | 7,500 W | 7,500 W | 12,000 W |
| MPPT trackers | 2 | 2 | 2 (dual-string) |
| Battery efficiency | 94% | 94% | 96% |
| Warranty | 12 years | 12 years | 12 years |
| Grid standards | G98 / G99 | G98 / G99 | G98 / G99 |
| Supply phases | Single | Single | Single / Three |
| EPS backup | ✓ (3,600 W) | ✓ (3,600 W) | ✓ (8,000 W) |
| Weight | 32 kg | 32 kg | 36 kg |
| Battery type | LV (51.2 V) | LV (51.2 V) | LV or HV (340 V) |
| Best for | Smaller homes | Mid-size homes | Larger homes |
All models include Grid Services Ready capability. The 8.0kW includes AFCI arc fault detection. Grid connection requires a compliant MCS installer and DNO approval.
Gen 3 Hybrid 3.6kW
Single-phase entry model with 7,500W max PV input and 2 MPPT trackers — ideal for smaller homes with modest energy consumption and limited roof space.
Key specifications
Output power
3,600 W
Max PV input
7,500 W
MPPT trackers
2
Battery efficiency
94%
Warranty
12 years
Supply
Single-phase
Features & capabilities
The 3.6 kW is the entry model in the Gen 3 range, suited to smaller homes with modest solar arrays (typically 18–22 panels of 350–400W within the 7,500W max PV limit). With 2 MPPT trackers it handles basic string configurations well. A single GivBat 9.5 Gen3 provides 9.5 kWh of storage — sufficient for most single-occupant or two-person households to cover peak evening demand and overnight consumption.
Lowest upfront cost in the Gen 3 range — suits tight budgets or smaller properties.
G98/G99 compliant — fits standard DNO export requirements for single-phase properties.
Add a second GivBat unit later if your energy needs grow — no inverter replacement needed.
Gen 3 Hybrid 5.0kW
The mid-range model bridges entry-level and flagship performance — 7,500W max PV input accommodates larger solar arrays, making it the most popular choice for growing households.
Key specifications
Output power
5,000 W
Max PV input
7,500 W
MPPT trackers
2
Battery efficiency
94%
Warranty
12 years
Supply
Single-phase
Features & capabilities
The 5.0 kW is the sweet spot for most UK households. With 7,500W max PV input it comfortably handles 18–22 panels of 350–400W — common on a 3 or 4-bedroom home with a full south or split east/west roof. A single GivBat 9.5 Gen3 paired with the 5.0 kW will typically cover an average household's evening peak demand and charge from overnight cheap-rate electricity. Adding a second GivBat doubles this to 19 kWh for high-consumption properties.
The most commonly installed Gen 3 model across UK residential properties.
5 kW output handles typical EV smart charging schedules alongside home demand.
Start with one GivBat 9.5 and add a second later without replacing the inverter.
Gen 3 Hybrid 8.0kW
Purpose-built for larger homes and three-phase properties — 12,000W PV input, dual-string MPPT, 96% battery efficiency, and AFCI arc fault detection.
Key specifications
Output power
8,000 W
Max PV input
12,000 W
MPPT trackers
2 (dual-string per tracker = 4 strings)
Battery efficiency
96%
Warranty
12 years
Supply
Single or three-phase
Features & capabilities
The 8.0 kW is the flagship Gen 3 model, designed for larger homes and three-phase properties. With 12,000W max PV input it handles arrays of 28–35+ panels. Dual-string MPPT capability (2 strings per tracker = 4 strings total) gives unmatched flexibility for complex roof layouts — panels on different orientations or with mixed shading can each be optimised independently.
Dual-string MPPT explained
Each MPPT tracker on the 8.0 kW can manage 2 strings of panels independently. This means 4 independently-optimised strings in total — a significant advantage on complex roofs:
East, south, and west-facing panels each get their own MPPT optimisation — morning and afternoon harvest both maximised.
A shaded string on one part of the roof doesn't drag down output from unshaded strings — each manages itself.
12 kW PV input with 4 strings covers the largest residential solar arrays without compromising efficiency.
The only Gen 3 model that supports three-phase supply — essential for many larger UK properties.
Premium battery efficiency — 2% higher than 3.6kW and 5.0kW models, meaningful on a large system.
Pair with up to 5× GivBat 9.5 for 47.5 kWh total storage — whole-home energy independence.
GivBat battery pairing guide
All Gen 3 Hybrid models require an external GivBat battery. This modular approach lets you start with less storage and expand later without replacing the inverter.
Why external battery?
The Gen 3 inverter handles all charging and discharging control; the GivBat module provides the physical energy storage. Separating inverter from battery gives you flexibility: if your energy needs grow, add another GivBat unit without touching the inverter or panel wiring.
This modular design also means a battery fault can be resolved by replacing only the affected GivBat unit, not the entire system.
Recommended GivBat models
GivBat 9.5 Gen3 — 9.5 kWh
Most popular pairing. Covers typical evening peak demand and overnight consumption for a 3–4 bedroom home.
GivBat 5.12 Gen3 — 5.12 kWh
Entry-level option. Suitable for smaller homes or lower-budget installations where overnight grid charging will supplement solar.
Other GivBat capacities available. Consult a GivEnergy installer for your specific requirements.
Battery stacking: capacity options
Up to 5 GivBat units can be stacked in series to increase total storage. Common configurations:
1× GivBat 9.5
9.5 kWh
2× GivBat 9.5
19 kWh
3× GivBat 9.5
28.5 kWh
5× GivBat 9.5
47.5 kWh
Maximum 5 units per system. Work with a certified installer to determine the optimal capacity for your home's energy profile.
Recommended pairing by model
Gen 3 3.6kW
Start with 1× GivBat 5.12 or 1× GivBat 9.5. Add a second 9.5 later if needed.
Gen 3 5.0kW
Pair with 1× GivBat 9.5 for most homes, or 2× GivBat 9.5 for high consumption.
Gen 3 8.0kW
Pair with 2–5× GivBat 9.5 for maximum performance and storage.
AC-coupled and DC-coupled AIO models — compare against the Gen 3 Hybrid.
Configure your Gen 3 for Octopus Go, Agile, Intelligent, Economy 7, and more.
Diagnostic guide — system mode, CT clamp, SoC limits, and firmware resets.
Browse all fault guides — battery, portal, EPS, CAN comm, and firmware.
GivEnergy Gen 3 Hybrid questions
Gen 3 Hybrid is the current generation with improved efficiency (94–96%), higher PV input ratings, and full Grid Services capability. Gen 1 and Gen 2 are older models with lower efficiency and more limited features. Gen 3 is the correct choice for any new installation — it supports current G98/G99 grid connection standards and is compatible with all future UK grid services schemes.
Yes. All Gen 3 Hybrid models require an external GivBat battery, sold separately. The inverter handles all charge and discharge control; the GivBat module provides physical energy storage. The recommended pairing is GivBat 9.5 Gen3 (9.5 kWh). You can stack up to 5 GivBat units (max 47.5 kWh). This modular design means you can upgrade storage without replacing the inverter.
The Gen 3 3.6kW has a maximum PV input of 7,500W across 2 MPPT trackers. As a guide, 18–22 panels of 350–400W each fits comfortably within this limit. The exact number depends on your roof layout, panel specifications, and string configuration. Always consult a qualified MCS installer to design the optimal array for your property — array design must comply with BS:7909 and relevant IEC standards.
Yes — the Gen 3 8.0kW is the only model in the range capable of operating on three-phase supply, making it the correct choice for larger homes and properties with a three-phase electrical connection. The 3.6kW and 5.0kW are single-phase only. Grid connection on any supply type requires G98/G99 DNO approval and a registered MCS installer.
All Gen 3 Hybrid models switch to EPS (Emergency Power Supply) within milliseconds of detecting a grid outage (typically sub-20ms). This is fast enough to maintain most essential loads without interruption. EPS operates only on a designated essential load circuit — your installer must wire critical loads (lights, refrigerator, router) to this circuit at installation time. Circuits not on the EPS line will lose power during an outage.
In most cases yes — Gen 3 models have similar or higher PV input ratings than Gen 2, so the existing panel wiring can often be reused. However, G98/G99 compliance, DNO approval, and your installer's full site assessment must be confirmed before any upgrade. Upgrades typically require re-commissioning and sign-off from a registered installer. Always consult with a qualified solar engineer before planning a system upgrade.
Not sure which Gen 3 model fits your home?
Tell us about your property, roof layout, current energy use, and tariff. We'll give you an honest recommendation on the right Gen 3 model and battery pairing for your situation.