What SSES means for heat pump manufacturers

By the Ebb Energy team Updated 8 July 2026 10 min read

If you make, import or specify heat pumps for the UK market, SSES is going to touch your product roadmap. This is a practical guide from Ebb Energy — we help heat pump owners lower their bills by running heating when electricity is cheaper and cleaner, and we work with manufacturers preparing their products for a more flexible grid.

Why SSES matters for heat pumps

Heat pumps are one of the most efficient ways to heat a home, but they are rarely optimised for when electricity is cheapest. Prices swing hour by hour on flexible tariffs, and the grid gets cleaner or dirtier depending on wind, solar and demand. A heat pump on a fixed schedule ignores all of that.

SSES is the framework that pushes the whole system — appliances, tariffs, and the parties allowed to send control signals — to work together. For heat pump manufacturers, that means product compliance obligations, but also a real commercial opportunity: heat pumps that are visibly cheaper to run.

Energy smart appliance requirements

The energy smart appliance rules under SSES set minimum expectations for the appliances themselves. There are four themes to design against:

1. Interoperability

Appliances should work with more than one energy service provider. Customers should be able to change tariff or optimisation provider without replacing hardware. In practice this means open, documented control interfaces rather than a single proprietary cloud.

2. Cyber security

Because a load controller can influence real-world energy demand, cyber security is treated seriously. Expect requirements around secure boot, authenticated firmware updates, credential management and clear vulnerability disclosure.

3. Data privacy

Heating data reveals a lot about a household. SSES aligns with UK GDPR expectations: minimise, be transparent, give customers control.

4. Grid stability

Appliances need randomised response and safeguards so that a large fleet does not switch on or off simultaneously and destabilise the local network.

The load control licence

Alongside the appliance rules, SSES introduces a new regulated activity: load control. Any organisation that sends signals to change a home appliance's electricity use is expected to hold a load control licence, or work with a licensed party.

The intent is clear — only vetted, cyber secure organisations should be able to remotely nudge heat pumps and EV chargers in millions of homes. For manufacturers, the practical question is: who is the licensed party in your customer's home, and how does your product take instructions from them safely?

Tariff interoperability

Tariff interoperability means a customer should be able to switch electricity supplier, or switch the smart service optimising their appliance, without their heat pump becoming a brick or losing its smart features. It is one of the more significant commercial shifts in SSES because it discourages closed ecosystems.

For product teams, this influences how you design authentication, provisioning, and the boundary between your appliance firmware and any third-party controller.

What heat pump manufacturers should do now

• Map your current control stack against emerging energy smart appliance requirements — interoperability, cyber security, data privacy and grid stability.
• Track DESNZ and Ofgem SSES consultations, and align internal roadmaps to the expected implementation windows rather than waiting for the final rules.
• Decide who holds the load control licence in your customer's home — you, a partner, or an ecosystem of licensed controllers you interoperate with.
• Design or refactor the control interface so any licensed load controller can integrate cleanly, without bespoke work per manufacturer.
• Plan for tariff interoperability from the start — avoid supplier lock-in patterns that SSES is likely to disallow.
• Test with real UK households on flexible tariffs to understand how your product behaves when price signals actually change hour to hour.

Build vs buy vs partner

Every heat pump manufacturer we speak to lands on the same question: do we build the optimisation and load control layer ourselves, buy it, or partner with someone who has already done it?

Build gives you full control, but the scope is wide: cloud infrastructure, tariff integrations, forecasting, cyber security, licensing, and the ongoing effort of keeping up as SSES evolves. It is a multi-year investment before it starts helping customers.

Buy — licensing a white-label platform — is faster but often means embedding another brand into your product experience, and can still leave you carrying the compliance risk.

Partner with a specialist who focuses on heat pump optimisation and is designed to slot into an SSES-compliant world. You keep the customer relationship and the product experience; they carry the flexibility, tariff and grid integration work.

How Ebb Energy can help

Ebb is a software partner for heat pump manufacturers who want their products to be visibly cheaper to run and ready for a flexible energy future. We help homes use energy when it is cheapest and cleanest, while keeping comfort first.

For manufacturers, that means:

• A tested optimisation layer that learns each home and shifts heating within safe comfort ranges.
• An architecture designed to prepare for compliance with SSES energy smart appliance and load control expectations.
• Real-world validation with pilot households on flexible tariffs across the UK.
• A partnership model that keeps the heat pump brand at the centre of the customer relationship.