good fit
Good fit: compatible controlled heaters
A confirmed SMETS2 auxiliary-control setup and sufficient stored heat make Snug worth checking.
Household decision guide
Best Octopus tariff for storage heaters: what to compare
Compare Snug, Economy 7 and other structures using heater control, SMETS2 auxiliary switching, meter timing and day/night consumption.
Edited by Rob Gibbs. Guidance reviewed: .
Short answer
Snug can fit eligible traditional storage heaters controlled through a compatible SMETS2 auxiliary load control switch. Economy 7 can suit households that can place enough consumption in the actual night register. The right structure depends on the meter, circuit control, regional timing and measured day/night split—not an invented percentage.
Who this is for: Homes with traditional storage heaters, dual-register metering or a planned meter/control change.
Fit check
poor fit
Poor fit: mostly daytime resistance heating
High daytime top-up use can overwhelm a cheap overnight register.
verify first
Verify first: meter and circuit
Ask Octopus to check the meter, auxiliary switch, heater circuit and half-hourly communication.
How to compare in practice
Step 1
Identify what the meter controls
Confirm which circuit feeds the storage heaters, how it is switched and which register records it. Do not infer this from the labels on an in-home display.
Step 2
Calculate the measured day and night split
Use billed register readings over colder months and include immersion heating, portable heaters and daytime top-ups. The household split matters more than a generic Economy 7 break-even percentage.
Step 3
Price the actual timing and controls
Apply the correct regional or meter-specific register times and compare both unit rates plus one daily standing charge. For Snug, separately verify the auxiliary-control setup and supplier scheduling eligibility.
Numbers to collect before comparing
Better inputs matter more than a generic winner. Gather these before using a tariff calculator or asking Octopus for an eligibility check.
Meter and circuit details
Record the meter model, SMETS generation, register identifiers, auxiliary switch or terminal arrangement and which appliances sit on the controlled circuit.
Day and night consumption
Collect at least several winter bills showing kWh on each register. Note any estimated readings and the actual changeover times confirmed by the supplier.
Heater demand and top-up
List heater input ratings, charging settings, required warmth and any direct-acting or portable heating used during the day.
Equipment and controls
How the heater is switched
Snug depends on storage heating controlled through an auxiliary load control switch on a compatible SMETS2 meter. App-controlled heaters are not automatically compatible.
Meter requirements
The exact meter arrangement matters
Confirm SMETS generation, auxiliary terminals or switch, register configuration and communication. Supplier checks—not the presence of an in-home display—decide whether the setup works.
Economy 7 timing is not universal
Night-register timing can depend on the meter and region. Use billed register data and supplier confirmation instead of assuming one nationwide seven-hour clock.
Eligibility to verify
Snug and Economy 7 are different propositions
Snug includes supplier smart scheduling for eligible storage heating. Economy 7 is a dual-register rate structure and does not by itself prove compatible heater control.
Import tariff structures to compare
Snug Octopus
Managed storage-heater charging can suit eligible auxiliary-controlled systems.
Watch: Requires a compatible SMETS2 and successful Octopus control checks.
Flexible Octopus Economy 7
A variable dual-register option can suit a strong measured night-use share.
Watch: Day rates can offset night savings; use real register consumption.
Octopus Fixed Economy 7
Fixed dual-register prices can improve predictability.
Watch: A fixed term does not make a poor day/night split economical.
Agile Octopus
Can suit separately controllable electric loads with active scheduling.
Watch: It does not recreate an Economy 7 controlled circuit or guarantee heater compatibility.
Export choices and pairing
Outgoing Octopus
Only relevant if the property also has eligible generation.
Watch: Storage heating alone provides no export and does not settle pairing eligibility.
Separate controlled and household loads
Ask which circuits receive the cheap or scheduled rate and when. Do not assume every appliance follows the storage-heater switch.
Effort and automation
Supplier scheduling versus a fixed register
Snug can move eligible heater charging. Economy 7 follows the meter register timing and leaves heater settings and daytime top-up choices to the household.
Price risk
Day-rate exposure can dominate
Portable heating, immersion use or daytime top-ups may sit on a dearer register. Compare measured kWh by register rather than a generic night-use share.
Standing charges
Dual-register still has a daily charge
Compare the actual tariff standing charge with both day and night rates. Do not double-count it once per register.
The answer changes when…
- The measured day/night register split changes.
- A heater or meter replacement changes control compatibility.
- Daytime top-up heating becomes necessary.
- Regional or meter-specific register timing differs from the assumed schedule.
Questions people ask
Does every SMETS2 meter work with Snug?
No. Octopus says the heater must be managed by a compatible auxiliary load control switch and performs checks during signup.
Is Economy 7 always seven hours at the same time?
No. Timing can vary by region and meter arrangement, so confirm the actual registers and billed hours.
What night-use percentage does this guide assume?
None. Use measured register consumption because an invented split can reverse the comparison.
Continue your comparison
Limits of this guide
This guide compares public tariff structures. It is not a switching quote, eligibility decision, bill forecast or equipment-performance guarantee. Verify live rates, standing charges, product terms, device support and meter operation with Octopus before switching.
Primary sources
- Snug Octopus — Octopus Energy; checked 2026-08-27. Storage-heater, SMETS2 and auxiliary-load-control eligibility and scheduling.
- Smart Tariffs terms and conditions — Octopus Energy; checked 2026-08-24. Smart-tariff eligibility, rate windows, compatibility and publication caveats.
- Joining an Octopus smart tariff — Octopus Energy; checked 2026-08-27. Smart-meter connectivity, half-hourly readings, installation and compatibility limitations.