Fox ESS S1500-G2 1.5kW Single-Phase Solar Inverter

£195.95

Fox ESS S1500-G2 1.5kW Single-Phase Solar Inverter steps up power for small UK arrays that need a little more headroom. Its single high-accuracy MPPT, wide DC window and low start-up voltage keep generation flowing through early mornings and cloudy spells typical of British weather. A fan-free, IP65 enclosure enables quiet, outdoor-ready mounting with minimal maintenance.

Commissioning is quick: integrated data logging and FoxCloud remote monitoring (Wi-Fi/LAN, optional 4G) give instant performance visibility and streamlined support. Certified to G99 and EN62109, S1500-G2 is designed for clean integration with UK single-phase systems. Headline figures include 1500W AC output, around 2250W max PV input, single MPPT, and peak efficiency up to 97.6% (see datasheet for exact limits). Considering alternatives? Compare the S1000-G2 or size up to the S2000-G2. For components, browse our solar panels and battery storage.

Contact Evergy for product guidance or system compatibility support.

SKU: S1500-G2

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Free and easy returns | Easy to Install | Professional Installers Available

The Fox ESS S1500-G2 1.5kW Single-Phase Solar Inverter gives UK installers extra headroom for compact arrays while keeping commissioning simple. It’s purpose-built for small domestic or light-commercial systems where reliability, quiet running and fast sign-off matter.

Smart Hybrid Power for UK Homes and Installers

Designed around a single high-accuracy MPPT, the S1500-G2 supports up to 2250W PV input with a wide operating window, capturing useful energy through early mornings and cloudy spells common across Britain. A fan-free IP65 enclosure streamlines outdoor mounting and removes moving parts that generate noise or require maintenance. With built-in data logging and FoxCloud connectivity (Wi-Fi/LAN, optional 4G), performance checks and homeowner handovers are quick and tidy.

Installer-Ready Safety & Compliance

Safety and grid conformity are engineered in. The S1500-G2 provides anti-islanding, residual-current and insulation monitoring to speed UK G99 commissioning. Certified to EN62109, it maintains electrical and thermal safety for the lifetime of the installation. Clear status indicators and remote diagnostics via FoxCloud help reduce call-backs and site revisits.

Key Installer Features

Single MPPT with rapid tracking and a wide 80–500V operating window
Rated AC output 1500W; typical max PV input around 2250W
Fan-free IP65 construction for quiet, outdoor-ready mounting (<25dB)
FoxCloud monitoring via Wi-Fi/LAN; optional 4G for remote sites
Integrated RCM, insulation monitoring and anti-islanding for faster G99 sign-off
Compact form factor to simplify handling and reduce wall-space requirements

If you’re wondering how the S1500-G2 handles short or single-aspect strings, its precise MPPT tracking across 80–500V sustains yield when irradiance is low or uneven—helping you deliver predictable output on typical British roof layouts.

Specification data verified from Fox ESS S(G2) documentation (V3.4, April 2025).

Smart Monitoring & Installer-Grade Connectivity

The Fox ESS S1500-G2 comes pre-equipped for intelligent monitoring and long-term reliability. FoxCloud provides real-time visibility of generation and grid interaction, while built-in Wi-Fi and LAN ports simplify commissioning. An optional 4 G dongle supports rural sites or detached outbuildings. Installers can capture system data logs instantly, ensuring smooth handovers and less time on site. RS485 and CAN ports enable flexible BMS and export-limiting integrations.

Seamless Integration with Solar Panels & Battery Systems

Working seamlessly with solar panels from all major brands, the S1500-G2 is ideal for single-phase UK arrays seeking battery readiness. It’s compatible with Fox high-voltage LFP storage systems through matching controllers, allowing customers to expand capacity without replacing their inverter. This forward-thinking design gives installers a clear upgrade path for energy-storage projects.

Compact Design & Rugged Construction

At just 5.4kg and 290×220×116mm, the S1500-G2 offers outstanding power density in a lightweight format. Its die-cast aluminium housing and fan-less thermal management ensure quiet operation (<25dB) and lasting durability. The IP65 rating provides total protection against rain and dust, making it perfect for external walls or garage installations where space and airflow are limited.

Installer Guidance & System Notes

String design & MPPT layout

Observe the 80–500V DC range and limit string current to 12.5A. Use a balanced single string for small rooftops to optimise voltage stability and ensure the MPPT tracks effectively across varying irradiance.

Battery configuration & sizing

When coupled with a Fox ESS controller, start with 5–10kWh of LFP storage for domestic setups. The inverter’s communication interface ensures plug-and-play scalability up to multi-module stacks for higher-demand users.

Grid compliance & safety

Fully compliant with G99 and EN62109. Features built-in anti-islanding, residual-current, and insulation monitoring to streamline DNO approval and site commissioning.

Why We Recommend the Fox ESS S1500-G2

At Evergy, we recommend the S1500-G2 as the sweet spot between compact form and practical performance. Its 1.5kW AC output suits single-string installations perfectly, and its IP65 housing makes it durable enough for British weather. Backed by Fox ESS engineering, it’s a smart, scalable choice for installers who value efficiency and reliability. Evergy is the renewable division of LAMPS Electrical, an independent UK wholesaler with more than 15 years of experience supporting professional electricians and solar specialists nationwide.

Compare in the Fox S(G2) Range

Model	Max PV (W)	Rated AC (W)	MPPTs	Voltage Window (V)	Max Eff.	Dimensions (mm)	Weight (kg)
S1000-G2	1500	1000	1	80–500	97.4%	290×220×116	5.4
S2000-G2	3000	2000	1	80–500	97.6%	290×220×116	5.4

FAQs – Fox ESS S1500-G2 1.5kW Single-Phase Solar Inverter

How does the S1500-G2 differ from the S1000-G2?

The S1500-G2 offers 50% more AC output and a higher PV input limit, giving extra flexibility for mid-sized residential systems.

Is it compatible with Fox ESS batteries?

Yes — it integrates with Fox high-voltage LFP batteries when used with a compatible controller, allowing easy future expansion.

Can it be mounted outdoors?

Yes. The IP65 aluminium enclosure and passive cooling make it weather-resistant and maintenance-free for external installations.

How can I monitor performance?

Via FoxCloud. Wi-Fi and LAN connectivity are standard, with an optional 4G module for remote access.

What are the dimensions and weight?

Approx. 290×220×116mm and 5.4kg, enabling easy wall-mounting by a single installer.

For professional guidance or trade support, contact Evergy — trusted UK distributor of leading solar inverter and battery brands.

Attribute name	Attribute value
Dimensions	29 x 22 x 11.6 cm
Weight	5.4 kg
Warranty	10 Years
Rated Power	1,500 W
Max Efficiency	97.4%
MPPT Quantity	1
DC Start-up Voltage	60 V
Protection Class	IP65 (Outdoor Use)

S1500-G2

FOX ESS

Fox ESS is a global leader in the development of inverter and energy storage solutions. Engineered by some of the world’s leading inverter and battery experts, their products offer advanced features, coupled with exceptional performance and reliability.

Free delivery -

NEXT DAY Delivery to Oxfordshire, Buckinghamshire and London via an EVERGY vehicle. Max of 1 ton weight.

Other delivery options via courier -

FREE NEXT DAY (*orders over £50, some batteries and inverters will require an additional fee) via FEDEX. Monday to Friday, up to 30kg, Max box size 50cm x 50cm x 50cm (volume). Orders must be received by 2pm.

Anytime NEXT DAY delivery – under £50 = £6.50 (depending on location, weight and size)

Regardless of spend, additional to any of the above charges –

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Before 10am (FedEx First) = Guide Price £20.00 (calulated at checkout)

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Multiple pallet orders can be quoted upon request (price dependent on number of pallets and postcode area)

Special delivery items may vary (non-stock products).

SAME DAY COLLECTION - Click & collect from Evergy Stores (Thame, Oxfordshire).