Simpson & Partners vs Ohme Home Pro: Which EV Charger Should You Choose?

Q: Is the Ohme Home Pro good for smart tariffs?

Yes — Ohme's tariff integration is excellent, particularly with Octopus Agile and similar dynamic pricing tariffs. It automatically schedules charging during cheap overnight periods.

Q: Does Ohme Home Pro need WiFi?

No. Ohme Home Pro has built-in 4G (SIM card) maintaining connectivity without home WiFi — useful in poor-signal areas.

Q: Why is Simpson & Partners better for future-proofing?

Simpson & Partners supports OCPP, three-phase charging, Ethernet, and a V2G roadmap. Ohme is primarily residential tariff scheduling. As home energy systems evolve, Simpson & Partners' broader compatibility is a significant advantage.

Simpson & Partners vs Ohme Home Pro | EV Charger Comparison UK 2026

EV Charger Comparison · UK 2026

Simpson & Partners vs Ohme Home Pro: Which EV Charger Is Better?

Ohme Home Pro is one of the UK's most popular smart tariff chargers, with built-in 4G and deep integration with Octopus and other smart energy providers. Simpson & Partners is the most capable all-round platform. Here's how they compare — and why for most UK homes, one stands out.

✓ Best all-rounder: Simpson & Partners — for future flexibility and hardware-first reliability

Expert EV Charging Knowledge Competitive Prices via Volume Buying Large Project Buying Power Fast UK Dispatch UK-Based Support Team

Quick verdict: Ohme Home Pro excels at smart tariff scheduling and has a useful built-in 4G SIM. Simpson & Partners wins on OCPP, three-phase, warranty, design, and long-term flexibility. Via EcoHarmony's volume pricing, Simpson & Partners is also very competitive on cost.

Smart Tariff Compatible OCPP Open Protocol 3-Phase Capable Ethernet + WiFi Up to 10yr Warranty 200+ Colour Options

Simpson & Partners Home Series EV Charger

Simpson & Partners Home Series From EcoHarmony — competitive pricing via volume buying

Ohme Home Pro Smart tariff-focused charger with built-in 4G

Side-by-Side Comparison

Feature	Simpson & Partners	Ohme Home Pro
Max Charge Rate	7.4kW single / 22kW 3-phase	7.4kW single phase only
Smart Tariff Integration	Yes — app-based + OCPP backends	Market-leading — Octopus, E.ON etc.
Built-in 4G SIM	No — WiFi + Ethernet	Yes — independent of home WiFi
OCPP Support	Yes — open platform	No
Ethernet Connectivity	Yes (model dependent)	No
Three-Phase Ready	Yes — up to 22kW	No
On-charger Display	No	Colour LCD screen
Design & Finish Options	200+ colours	Limited options
Warranty	Up to 10 years	3 years standard
Commercial / Fleet Use	Yes — OCPP + billing	No
V2G Roadmap	Yes	Not confirmed
EcoHarmony Price Advantage	Yes — volume buying	Standard retail pricing

📖 Plain English

Ohme is like a very smart alarm clock for your car — it automatically charges it at the cheapest time overnight. That's genuinely useful. But if you want a charger that's not dependent on any one company's app, can handle three-phase electricity, and will still be covered by warranty when your EV is 8 years old — Simpson & Partners is the better long-term investment.

Where Simpson & Partners Has the Edge

🔌

OCPP Open Protocol

No lock-in. Works with any OCPP backend — billing, fleet management, or energy management tools.

🌐

Ethernet Available

Wired connection for installations where WiFi or 4G is unreliable — critical for commercial sites.

⚡

Three-Phase Capable

Up to 22kW on three-phase supply — future-proofs properties that may be upgraded.

🛡️

Up to 10-Year Warranty

Ohme offers 3 years. Simpson & Partners' extended enclosure warranty is a major long-term advantage.

🎨

200+ Finishes

Match any home aesthetic. Ohme comes in limited colour options by comparison.

🏗️

Installer-First Design

Fewer external add-ons typically needed, reducing install time and cost for the electrician.

Where Ohme Home Pro Has the Edge

Built-in 4G SIM: Stays connected even with weak home WiFi — useful in rural or signal-poor locations.
Tariff automation: Deeply integrated with smart energy tariffs (Octopus, E.ON, etc.) for automated off-peak scheduling.
On-charger display: Colour LCD screen lets you check status without reaching for your phone.
Lower upfront charger cost: Ohme Home Pro typically has a lower purchase price — though total installed cost depends on setup.

EcoHarmony Price Advantage

EcoHarmony supplies Simpson & Partners chargers to large residential developments, commercial fleets, and installer networks across the UK. That volume-based buying power means you get highly competitive pricing — often below what you'd find at standard retail, with no compromise on warranty, support, or genuine product quality.

When you factor in Simpson & Partners' longer warranty, fewer required external components, and the reduced risk of future compatibility issues, the total cost of ownership is frequently lower than chargers with a cheaper sticker price.

Why this mattersAlways compare the full installed cost — charger, accessories, ongoing support, and likelihood of needing to replace the unit — not just the retail price of the charger alone.

Which Should You Choose?

Our Verdict

Choose Simpson & Partners if…

You want OCPP open-platform flexibility
You need three-phase charging now or in future
You want Ethernet reliability over WiFi
You want up to 10-year warranty
You need commercial or fleet capability
You want 200+ design finish options

Choose Ohme Home Pro if…

Smart tariff scheduling is your primary goal
You have weak home WiFi and want built-in 4G
You want an on-charger LCD screen
You're happy with a 3-year warranty
You're on Octopus or similar and want native integration

Frequently Asked Questions

Is the Ohme Home Pro good for smart tariffs?

Yes — Ohme's tariff integration is one of its strongest features. It works particularly well with Octopus Agile and similar dynamic pricing tariffs, automatically scheduling charging during cheap overnight periods. If this is your primary goal, Ohme is a strong choice.

Does Ohme Home Pro need WiFi?

Ohme Home Pro has built-in 4G (SIM card) meaning it can maintain connectivity without your home WiFi. This is useful in areas with poor broadband or for outdoor installations far from the router.

Why is Simpson & Partners better for future-proofing?

Simpson & Partners supports OCPP (open protocol), three-phase charging, Ethernet connectivity, and has a roadmap for V2G (vehicle-to-grid). Ohme is primarily a residential charger focused on tariff scheduling. As home energy systems evolve, Simpson & Partners' broader compatibility is a significant advantage.

Can I get a good price on Simpson & Partners at EcoHarmony?

Yes. EcoHarmony's volume purchasing means Simpson & Partners is priced competitively — often below what you'd pay via other channels. We supply large projects and installer networks, and pass that buying power to individual customers.

Which charger is easier to install — Ohme or Simpson & Partners?

Both are designed for professional installation by a qualified electrician. Simpson & Partners is noted by installers for its straightforward installation process and clear documentation, with fewer external components typically needed on a standard domestic setup.