Simpson & Partners vs Ohme

The Simpson & Partners Home Series and the Ohme Home Pro are two of the most popular premium EV chargers available in the UK, both offering smart charging, solar compatibility, and straightforward home installation.

However, they are designed with different priorities. Simpson & Partners focuses on premium hardware, long‑term durability, advanced connectivity (including OCPP and Ethernet on many models), and built‑in flexibility for future energy systems, while Ohme delivers a software‑led, app‑driven experience built around intelligent tariff scheduling and built‑in 4G connectivity.

This comparison breaks down the key differences to help you decide which charger is best suited to your home, your electrical setup, your energy tariff, and your future charging needs.

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  • Simpson & Partners

  • Ohme

Feature Simpson & Partners Ohme Home Pro
Primary Focus ✔ Future-proof smart charging, flexibility & system integration ⚠ Cost-optimised smart charging with tariff automation
Solar Integration ✔ Advanced solar + load balancing integration ✔ Solar compatible (via app optimisation)
Connectivity ✔ WiFi + Ethernet + Bluetooth (model dependent) ⚠ 3G/4G SIM only (no WiFi/Ethernet)
OCPP Support ✔ Yes (open platform ready) ✖ No
Smart Charging Logic ✔ Advanced control, flexible integration, future V2G pathway ✔ Excellent tariff-based automation (Octopus Intelligent focus)
Load Management ✔ Advanced wired load balancing (multi-unit capable) ✔ Built-in load management with CT clamp
Installation Flexibility ✔ Wall or pedestal, multi-site install friendly ⚠ Wall-mounted tethered only
Control Interface ✔ Platform flexibility + installer integration ✔ On-unit screen + app control
Repairability ✔ Modular & serviceable design ✖ Limited modular repairability
Future-Proofing ✔ Designed for upgradeability (incl. V2G roadmap) ✖ Limited long-term extensibility
Connectivity Reliability ✔ Ethernet fallback option for stable installs ⚠ Dependent on mobile signal (SIM-based)
Warranty ✔ Up to 5–10 years (depending on configuration) ⚠ Typically 3 years standard
Best For ✔ Future-focused homes, flexible installs, energy system integration ⚠ Users on smart tariffs wanting automated cheap charging

Choose Simpson & Partners if you want:

  • Greater Choice in Colour Options

  • A charger that feels like a long‑term energy‑system component rather than a disposable consumer‑tech box.

  • Ethernet connectivity on many models, OCPP 1.6J+ support, and future‑proof three‑phase capability (up to 22kW).

  • A more premium, architecturally designed charger with strong build quality and long‑term durability.

  • Flexible installation including freestanding and wall-mounted options

  • A longer enclosure warranty (up to 10 years) and stronger resistance to UK weather and outdoor use.

Choose Ohme if you want:

  • A tethered, wall‑mounted unit with live feedback on an LCD screen and easy‑to‑understand app‑based controls.

  • A simpler, solar‑focused setup that “just works” for most homes with PV.

  • A charger built around dynamic tariff scheduling and built‑in 4G connectivity.

  • A more affordable upfront price (charger + install) than Simpson & Partners’ Home Series.

KEY DIFFERENCES

Simpson & Partners

Core advantages

  • Longer enclosure warranty: Up to 10 years on enclosures vs Ohme’s 3‑year standard warranty.
  • Three‑phase support: 7kW single‑phase or up to 22kW three‑phase on many models, giving faster charging for compatible homes.
  • Harder‑wearing hardware: More robust enclosures and overall build designed for long‑term outdoor use.
  • Broader future‑proofing: OCPP 1.6J+, Ethernet, and potential for V2G‑ready or multi‑site control in other ranges.

KEY DIFFERENCES

Ohme

Core advantages

  • Built‑in 4G: SIM‑based 4G means the charger stays connected even if your home Wi‑Fi is weak or unreliable.
  • Lower upfront cost: Ohme Home Pro is typically cheaper to buy and install than the Simpson & Partners Home 7.
  • On‑charger screen: Colour LCD lets you start/stop, see live power, and view charging status without needing your phone.

FEATURE BREAKDOWN

Simpson & Partners

Smart Features

  • Deep smart‑tariff integration with Octopus, OVO, and others, including dynamic “Ready‑by” and price‑cap settings.
  • Scheduled charging and smart‑tariff‑aligned off‑peak windows within the S&P app.
  • Solar‑compatible modes and basic load‑management‑style features.
  • OCPP 1.6J+ support for third‑party platforms and future energy‑system integrations.
  • More advanced V2G‑ready and commercial‑ready paths in higher‑tier ranges.

Installation & Electrical

  • 7kW single‑phase or up to 22kW three‑phase depending on the model.
  • Wi‑Fi‑based connectivity (some models add Ethernet) is robust but can be affected by router distance.
  • More flexible wiring paths and multi‑phase readiness for homes with more ambitious electrical upgrades.

Access & Billing

  • Home‑focused ranges are still mainly for private use, but higher‑tier ranges support multi‑site, multi‑tenant, and fleet billing.
  • Better positioned if you ever want to move into landlord, office‑park, or fleet deployments

Hardware & Format

  • Wall‑mounted standard, with freestanding pedestal options on certain models.
  • Premium enclosures with IK10‑style robustness and 10‑year enclosure warranty on some units.

Design & User Experience

  • Architectural, high‑end appeal with strong colour and finish customisation.
  • Feels more like a statement piece on the wall, with a more technical‑feeling app and smart‑grid‑oriented controls

Commercial Features

  • Higher‑tier ranges are explicitly built for:
  • Multi‑tenant housing.Office car‑parks.
  • Fleet and depot environments.
  • Supports multi‑site, multi‑charger, and multi‑operator setups with proper billing workflows.

FEATURE BREAKDOWN

Ohme

Smart Features

  • Solar‑compatible charging via optional CT clamp, with modes like “Solar Boost” to use surplus PV.
  • Dynamic load balancing to protect your main fuse and prevent over‑current issues.
  • OTA‑enabled software updates over 4G, so smart‑charging logic keeps improving without new hardware

Installation & Electrical

  • 7.4kW single‑phase, wall‑mounted, tethered unit.
  • Designed from the start for dynamic load balancing and solar‑friendly setups.
  • 4G connectivity avoids Wi‑Fi‑range issues, but it’s still a single‑phase box

Access & Billing

  • Primarily residential‑only, with RFID‑style guest access on some setups.
  • No built‑in commercial billing or multi‑tenant split‑billing in the Home Pro.

Hardware & Format

  • Compact, wall‑mounted unit with tethered cable and 5 m or 8 m cable options.
  • Strong weather‑rating and integrated 4G but no freestanding option

Design & User Experience

  • Modern, clean box with a colour screen and clear on‑unit status.
  • UX is very app‑centric and tariff‑driven, with a focus on “cheapest/greenest charging” rather than pure aesthetics.

Commercial Features

  • Fundamentally residential, even in multi‑charger setups.
  • Can be used for small fleets or shared driveways, but no native commercial billing or multi‑tenant split‑billing.

BEST FOR

  • Best for Homeowners

    👉 Simpson & Partners — more flexible, more future-proof, better connectivity

  • Best for Cheapest off‑peak / smart‑tariff charging

    👉Ohme— Direct provider integration and dynamic tariff‑switching. 

  • Best for Long‑term energy‑system platform

    👉 Simpson & Partners — Stronger durability, multi‑site readiness, and commercial options.

💡 Installation Note


Most EV chargers in the UK require a dedicated circuit with appropriate protection. While many modern chargers include built-in safety features, installers will typically still specify an RCBO and, in many cases, surge protection (SPD) to ensure compliance and long-term reliability.


EXPERT INSIGHT

Ohme Home Pro is strong for tariff-based charging and simple smart scheduling, particularly for users focused on off-peak electricity pricing.

However, it is heavily software-led and dependent on external ecosystem integrations.

Simpson & Partners takes a more hardware-integrated approach, meaning fewer dependencies on third-party control logic and more stability at installation level.

This becomes important in UK homes where electrical setups vary widely and installers need predictable, compliant hardware.

In simple terms:

Ohme optimises charging behaviour.

Simpson & Partners optimises the entire installation.

That difference matters over the lifetime of the system.


FINAL VERDICT

Ohme Home Pro is the stronger choice for value‑driven, tariff‑led homes who want clever software and always‑on 4G connectivity at a lower installed price.

Simpson & Partners is the better long‑term, hardware‑first platform if you want premium build quality, three‑phase readiness, extended warranty coverage, and a charger that can scale with your home and future energy‑system plans.

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FAQs

Is Ohme Home Pro a good alternative to Simpson & Partners?

Ohme focuses on smart tariffs and energy cost optimisation, while Simpson & Partners offers a more premium build and broader installation flexibility.

Which charger is better for smart charging tariffs?

Ohme is one of the strongest options for integrating with energy tariffs like off-peak pricing. Simpson & Partners offers smart features but is less focused on tariff automation.

Can I install Ohme in a commercial setting?


Ohme Home Pro is designed mainly for residential use. Simpson & Partners is better suited for commercial or multi-user environments.

Do both chargers support load balancing?

Yes, but Simpson & Partners provides more advanced and scalable load management, especially for multi-charger setups.

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