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Scottish Power Heat Pump Tariff: Rates, Eligibility and Full Review

Scottish Power is one of the UK's Big Six energy suppliers, serving millions of customers across Great Britain. With the rapid growth in heat pump installations, Scottish Power has developed tariff options aimed at heat pump owners — but how do they stack up against dedicated offerings like Octopus Cosy?

In this review, we examine Scottish Power's heat pump tariff in detail: what it costs, who can get it, and whether it is worth choosing over the competition.

What Scottish Power Offers Heat Pump Owners

Scottish Power's approach to heat pump tariffs differs from smaller, more agile suppliers like Octopus. Rather than a bespoke heat pump-specific product, Scottish Power offers their SmartGen tariff and time-of-use options that benefit high-electricity households including those with heat pumps.

Scottish Power SmartGen Tariff

The SmartGen tariff is Scottish Power's primary offering for homes with renewable heating technology. Key features include:

  • Reduced unit rate: Approximately 15-18p per kWh (varies by region and current pricing period)
  • Flat rate: The same rate applies all day — no time-of-use complexity
  • Standing charge: Standard daily standing charge (approximately 50-55p per day)
  • Contract length: Typically 12-month fixed

The appeal of this tariff is simplicity. You do not need to schedule your heating around cheap windows — you simply pay a lower rate for all electricity, all day long. For homeowners who find time-of-use scheduling too complex or impractical, this is a genuine advantage.

Economy 10 / Off-Peak Options

In some regions, Scottish Power also offers Economy 10 tariffs that provide 10 hours of cheaper electricity (split between overnight and afternoon periods). This is a more traditional multi-rate option:

  • Off-peak rate: Approximately 11-14p per kWh (10 hours per day)
  • Peak rate: Approximately 28-32p per kWh (14 hours per day)

Economy 10 can work well for heat pump owners, but the high daytime rate makes it risky unless you can genuinely shift most usage to cheap periods.

Eligibility Requirements

To access Scottish Power's heat pump-specific tariffs, you typically need:

  • Registered heat pump: Evidence of a heat pump installation (MCS certificate preferred)
  • Smart meter: Recommended for SmartGen, required for Economy 10
  • Scottish Power customer: You need to be, or switch to, a Scottish Power electricity customer
  • Regional availability: Some tariff variations are only available in certain regions

Scottish Power has traditionally been strongest in Scotland and northern England, but their tariffs are available across GB. Contact them directly to confirm what is available at your postcode.

How Much Can You Save?

SmartGen vs Standard Variable Tariff

For a household using 4,000 kWh per year for heat pump operation:

  • Standard variable (24.5p/kWh): £980 per year
  • SmartGen (16.5p/kWh estimated): £660 per year
  • Annual saving: approximately £320

This is a solid saving, though less than what you might achieve on Octopus Cosy (£380-500) with good off-peak scheduling. The trade-off is simplicity — no need to adjust your heating schedule at all.

SmartGen vs Octopus Cosy

The comparison depends entirely on how well you can schedule your heating:

  • If you can shift 60%+ to off-peak: Octopus Cosy saves £50-150 more per year than SmartGen
  • If you can only shift 30-40% to off-peak: SmartGen and Cosy are roughly comparable
  • If you cannot shift usage at all: SmartGen is likely cheaper because Cosy's standard and peak rates are higher than SmartGen's flat rate

This makes Scottish Power a sensible choice for homeowners who want simple, guaranteed savings without the hassle of scheduling. You will not achieve the maximum possible savings, but you will definitely pay less than a standard tariff.

Pros and Cons of Scottish Power's Heat Pump Tariff

Advantages

  • Simplicity: Flat reduced rate means no scheduling complexity. Run your heat pump whenever you need it
  • Predictable bills: Same rate all day makes it easy to calculate and budget your energy costs
  • No risk of peak penalties: Unlike time-of-use tariffs, there is no expensive peak period to worry about
  • Fixed price options: 12-month fixed deals provide price certainty that variable time-of-use tariffs cannot
  • Big Six reliability: Scottish Power is a large, established supplier with extensive customer service infrastructure

Disadvantages

  • Lower maximum savings: You cannot achieve the same deep savings as a well-optimised time-of-use tariff
  • Less innovation: Scottish Power's tariff range is less sophisticated than Octopus's multiple options
  • Regional variation: Exact rates and tariff availability vary by region more than some competitors
  • Customer service: Scottish Power's customer satisfaction scores are historically lower than Octopus (though they have been improving)
  • Less flexibility: Fixed-term contracts may incur exit fees if you want to switch before the end

Who Should Choose Scottish Power?

Scottish Power's heat pump tariff is best suited to:

  • Homeowners who want simplicity: If the thought of scheduling your heat pump around off-peak windows fills you with dread, a flat reduced rate is ideal
  • Poorly insulated homes: If your home loses heat quickly and your heat pump needs to run throughout the day, a flat lower rate will save more than a time-of-use tariff where you end up paying peak rates anyway
  • Risk-averse customers: Fixed-price contracts give you certainty. Time-of-use tariffs can change their rates
  • Existing Scottish Power customers: If you are happy with Scottish Power and do not want the hassle of switching suppliers

How to Switch to Scottish Power's Heat Pump Tariff

  1. Contact Scottish Power by phone or online to discuss heat pump tariff options for your postcode
  2. Provide evidence of your heat pump installation (MCS certificate, installation paperwork)
  3. If you are a new customer, Scottish Power arranges the switch from your existing supplier (2-3 weeks)
  4. If you need a smart meter, schedule an installation (free of charge)
  5. The tariff is applied to your account once everything is verified

Note that Scottish Power's heat pump tariffs may not always be prominently displayed on their website. You may need to call them directly and ask about tariffs for heat pump owners — their advisers should be able to explain the current options.

Scottish Power vs Other Suppliers

Here is how Scottish Power compares to the main alternatives for heat pump owners:

  • vs Octopus Energy: Octopus offers more tariff choices and potentially deeper savings but requires more active management. Scottish Power is simpler
  • vs British Gas: Scottish Power's dedicated heat pump tariff is more competitive than British Gas's general offerings
  • vs EDF: EDF's GoElectric offers time-of-use pricing similar to Octopus. Scottish Power's flat rate is simpler but less flexible
  • vs OVO: OVO lacks a dedicated heat pump tariff, making Scottish Power the stronger choice for simplicity
  • vs E.ON: E.ON's Next Drive offers overnight cheap rates. Scottish Power's flat rate may suit those who cannot shift usage overnight

For a full side-by-side comparison of all suppliers, see our heat pump tariff comparison guide.

Is Scottish Power's Heat Pump Tariff Worth It?

Yes, if simplicity and predictability matter to you. Scottish Power will not deliver the absolute lowest running costs possible — that crown belongs to a well-optimised Octopus Cosy setup. But it will deliver guaranteed savings over a standard tariff with zero scheduling effort.

For a homeowner who has just installed a heat pump and feels overwhelmed by the technology, Scottish Power's straightforward approach has real appeal. You can always switch to a time-of-use tariff later once you are more confident with your system.

Check the best heat pump tariff guide for our overall recommendation across all UK suppliers.

Frequently Asked Questions

Is Scottish Power's heat pump tariff available in England?

Yes, despite the name, Scottish Power supplies electricity across Great Britain including England and Wales. Their heat pump tariff options are available nationwide, though exact rates vary by region. Contact them with your postcode for specific pricing.

Can I get a fixed-price heat pump tariff from Scottish Power?

Yes, Scottish Power typically offers 12-month fixed-price deals for heat pump customers. This gives you rate certainty that variable tariffs from other suppliers cannot match. Check current availability, as fixed deals come and go.

Do I need two meters for Scottish Power's heat pump tariff?

No, a single smart meter covers your entire household electricity supply. The tariff applies to all your electricity usage. You do not need a separate meter for the heat pump.

What if Scottish Power does not have a heat pump tariff when I check?

Tariff availability changes. If you check and their dedicated heat pump product is not currently available, ask about their best fixed-rate deal and compare it to other suppliers. Scottish Power periodically launches and withdraws specific tariff products based on market conditions.

Can I combine Scottish Power's heat pump tariff with solar panels?

Yes. Solar panels will reduce your grid electricity consumption, saving you money regardless of your tariff. Scottish Power also offers export tariffs for surplus solar generation, though the rates may not be as competitive as Octopus's export offerings.

How does Scottish Power compare on customer service?

Scottish Power has historically received lower customer satisfaction scores than smaller suppliers like Octopus. However, they have invested significantly in improving their service in recent years. As a Big Six supplier, they have extensive phone support and a nationwide network of engineers, which some customers prefer to digital-first suppliers.