Can customers take their in-home display with them when they move?

The in-home display is securely paired specially with the smart meters in that home, and will only work with those smart meters. This means a customer should not take the in-home display with them if they move. If a customer moves into a new home which has a smart meter but no in-home display, they should contact their energy supplier.

By |2022-06-09T16:48:04+01:00June 9th, 2022||

What is an accessible in-home display?

The accessible in-home display is sometimes called an AIHD. If customers need an accessible in-home display, they’re available from some suppliers. An accessible in-home display could be helpful if customers are: • blind or partially sighted. • have difficulties using their hands or wrists. • have difficulties with memory loss. They have larger buttons and can read information out loud. Customers should ask their energy supplier about an accessible in-home display.

By |2022-06-09T16:50:45+01:00June 9th, 2022||

What does the in-home display show customers?

The in-home display will show: • your gas and electricity costs • your energy costs each day, week and month • if you're using a small or large amount of gas and electricity • your spending goals (only available on some in-home displays). They could use this to make changes and spend less if they want to. If customers only have a smart meter for gas, the in-home display will only show them how much gas they use. If they only have a smart meter for electricity, the in-home display will only show them how much electricity they use.

By |2022-06-09T16:52:17+01:00June 9th, 2022||

How does the in-home display work?

The in-home display is a handheld, digital device that sits in the home. They give customers accurate, accessible, and near-real time consumption and pricing information. Each in-home display is securely paired with the smart meters in the home, taking information from them and displaying this for the customer. Energy suppliers are obliged to offer domestic customers an in-home display at the point of installation so that customers can visibly see their energy consumption, and in turn use the device to see the positive impact that any energy saving has on their bills. Non-domestic businesses should speak to their supplier directly [...]

By |2022-06-09T16:53:24+01:00June 9th, 2022||

What about storing off-peak night-time electricity as well?

The most common form of cheaper night-time electricity is known as Economy 7, but at present (April 2022) many supplies have removed these tariffs.   Octopus and Ovo also have interesting tariffs intended for owners of electric vehicles. For example, the Octopus Go tariff is currently 7.5p per kWh for the four hours between 00:30 and 04:30. If you have a battery with capacity at least as large as your use on a winter’s day, you could be able to use very little peak electricity any season.  Using our example, we assume that we use 1,020kWh direct from our solar panels [...]

By |2022-05-23T14:03:28+01:00May 23rd, 2022||

What if I add a battery to store excess solar electricity?

Experience suggests that with a 10kWh battery you may be able to use about 70% of the 3,400kWh you produce even if you use only 30% directly, i.e. an extra 1,360kWh. Then, your battery will save you 1,360kWh at 30p, i.e. £408 pa. Assuming the battery costs £5,000 the payback time is a bit over 12 years, longer than the currently expected lifetime of the battery. 

By |2022-05-23T14:02:39+01:00May 23rd, 2022||

What is the payback on solar panels producing 3,400kWh pa without Smart Export Guarantee (SEG)?

Let’s assume that you pay 30p per kWh for grid electricity (typical domestic electricity unit price from April 2022) and use 30% of what your panels produce, i.e. about 1,020kWh. Then you will save just over £300 pa and your £6,000 will take 20 years to pay off. If you use 45% the payback period comes down to 15 years and for 60% it’s 10 years. Quotes from some installers will make assumptions about inflation rates and will get smaller payback periods. You have to make your own judgement on how much weight to give to this but there seems [...]

By |2022-05-23T14:00:52+01:00May 23rd, 2022||

What other complementary technologies are there?

There are technological developments around water heaters that have smart controls and can be directly connected to your solar PV electricity supply, as well as your other energy sources. Have a look at Mixergy and iBoost as examples, but note that we have no experience of actually using these products. Storing excess electricity as hot water is another way of maximising the electricity output from your panels. An example of a homeowner who has adopted lots of complementary technologies is presented in this video presentation.  There are also heat batteries. As explained by the Energy Saving Trust, these store either spare [...]

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