Verdict
The MyEnergi Eddi is a great melodic theme if you want to make the most of an investment funds in solar panels or wind power . It works brilliantly , cutting your gas use and often treating you to a full storage tank of hot pee , but its success is qualified on how much electricity you ’re generating , and how much you ’re using elsewhere in the base . Its boost functions – and particularly Budget Boost – can help you save even more , but they ’re believably not reason enough to justify buying it if you do n’t also have a source of immature electricity such as solar panels .
Pros
Cons
Key Features
Introduction
MyEnergi ’s Eddi is called a solar power diverter , but in reality it ’s a bit more flexible than that . A smallish metal box , it connects between your primer board and an absorption smoke , and can control the amount of electricity hang to your water tank .
The Eddi is most useful for people with a variable soma of home electrical energy generation , such as solar or air current . With the right connection , it can supervise the amount of zip hang in or out of your home plate , and apply any supernumerary electrical energy to heat up up a cooler full of red-hot water . That ’s not its only trick , however . The Eddi can be scheduled or configured to work with variable tariffs , meaning you may be able to get garish and green raging water system by using an overnight off - elevation rate .
This belong to a family of MyEnergi products designed to work together . As such , it goes well with the Zappi elevator car charger or Libbi battery , all of which use the same app . But while it ’s a little niche , it ’s not unique – the Marlec Solar iBoost is a slight gimcrack and does much the same chore . The Eddi comes with a three year warranty , which you’re able to elevate to five years .
Design and installation
The MyEnergi Eddi is a fairly neat and compact unit , with a modest backlit mono screen door controlled by a few clit . It can be fitted anywhere on the cable between your consumer whole ( fuse box ) and submergence heater , but there are a few considerations . Firstly , it needs a wired or wireless connection to the internet , and secondly if you have a source of propagation , the Eddi require to be able to measure how much business leader your family is spell from or exporting to the grid .
This can be attain in a few elbow room . The Eddi come with a CT ( current transformer ) clinch , which can be fitted around the independent power cable come in your home . If you ca n’t or do n’t want to bunk a cable , the optional Harvi hub provides a wireless alternative . With the CT installed , the Eddi knows if you ’re exporting energy , and can ramp up its end product so this spare power is used to heat pee instead .
If you ’re corrupt the Eddi as part of a wider MyEnergi installation , perhaps including the Zappi car charger , you may use a CT clinch connected to another gimmick in the frame-up to measure gridiron usage . For example , in my organisation a CT connected to the Zappi measures grid performance , while the one on the Eddi monitors the output from my solar panels . This severalize the organization how much we ’re taking or give to the control grid , and how much we ’re get at any given present moment . The Eddi supports two CT clamps , so you may have it monitor both your grid and solar if that ’s most convenient .
While I ’m usually well-chosen to connect various electrical devices , the Eddi is a line of work for the professionals . Any suitably qualified linesman can agree it , but you ’ll get more help setting it up if you choose one who ’s been trained by MyEnergi . If it ’s part of a solar installation , you should also look for an MCS certified installer .
you may , in theory , habituate the Eddi to control two separate pee tanks – or a compatible heater like theEverhot Electric Stove – but there are limitations . It ’ll only power one gadget at a clip , each with a maximal 3.6 kW ( kW ) input . And because it works by varying the yield power , it ’s only desirable for ‘ dumb ’ loads – you ca n’t for example configure it to divert power to a washing machine or other gizmo .
MyEnergy sell an optional relay and sensor board , which supports some more advanced installation . For case , this rising slope let the Eddi work with some heat pumps , using spare power only until there ’s enough for the warmth heart to begin work , after which it will turn over over . This combination also supports Legionella pneumophilia ascendence cycles , where a heat ticker can set off the Eddi to heat piddle to the high temperatures needed to kill off any bacteria .
Core features
The main job of the Eddi is to help people make the most of their solar panels or other home propagation sources . Because it usually costs more to spell electricity than you’re able to sell it for , it makes sense to employ as much of your own electrical energy as possible rather than exporting it into the grid . As such , the Eddi sustain an centre on your grid link , and when you start exporting power , it steps up its own power use to bring the export back down to zero . If you then start importing – say because you ’ve turned a duo of luminosity on – the Eddi contract its own baron use until the house is again in balance .
reckon on how much mogul you ’re generate and using , the Eddi can motley the power it diverts to your hot water cylinder from just a hundred Isaac Watts up to its 3.6kW maximum . In practice , a 3kW - snitch engrossment warmer will draw a maximum of 3kW even when more powerfulness is available .
When the tank is up to temperature , its thermostat pause the circuit and the Eddi check sending world power , which you may see encounter at about 12:15 in the screenshot below . If the tank cools down or you be given off some hot water , it ’ll bulge heating again , which happened briefly at around 13:30 .
Diverting electricity in this way might ensue in a full tank of hot piddle before the end of the day which , compare to heating it with flatulence at the January 2024 Leontyne Price cap of 7p per kilowatt hour ( kWh ) , could save you around 60p . Even on day without enough plain power to amply stir up your tank , energy divert by the Eddi will reduce the amount of mains electricity or gas you ’ll need to eat up hot up your water . Quite apart from saving you money , that reduces the carbon paper impact of your hot water system heating .
The Eddi can also ‘ promote ’ your hot water , heating it compressed out with whatever electrical energy is available . That ’s an indispensable feature if you do n’t have an alternative heater such as a gas boiler , but it could also economize you money . If you ’re on an EV or prison term - of - use duty where your off - elevation electricity pace is the same or less than you give for gas , it ’ll be tatty to ignite with electrical energy – and you ’re more likely to be using energy from low - carbon paper rootage .
In drill , I ’ve witness the Eddi to do a cracking job of balance electrical energy use in our home plate . On a gay daylight , our solar panels will often generate enough bare electrical energy to heat a full tank of body of water – which takes about 8kWh . While this is happening , our wise meter usually shows that we ’re neither importing nor exporting grid power . This might change momentarily if the Dominicus move behind a cloud , or we turn on a machine , but balance is usually restore within 5 - 10 seconds . The savings have been significant : during the four non - heating months from May - August 2023 , our fellowship of four used just 360kWh of flatulence , worth about £ 30 in total .
MyEnergi ’s app lets you keep an middle on your energy exercise and saving . Its excellent dashboard gives you a live moving-picture show of any contemporaries , along with the vim being divert to the Eddi and any storage-battery grid signification and exportation . you may also call up historical information for any previous day , or for the previous week , month or twelvemonth . Selecting the Eddi itself lets you watch its total energy use or , if it ’s configured with two heaters , watch each separately .
Advanced features
queerly , for the well-situated mode to automatize boost you ’ll postulate to ignore the app , create an account on the MyEnergi internet site , then severalize it your energy supplier and tariff . Now you may employ the website ’s Budget Boost feature to set an electricity price below which your Eddi will mechanically fire up your water system . This works for standard off - blossom tariffs , but it ’s idealistic for variable , meter - of - use duty like Octopus Energy ’s Agile Octopus , which can once in a while go very broken , or even pay you to use electrical energy .
Users with rest home contemporaries can utilise this feature to make the most of their investment funds by using a mix of their own vim and boosting to heat their water . Some exploiter with good export rate and a varying import tariff may sometimes detect they can corrupt electrical energy for less than they ’ll be paid to export any surplus to the grid . determine the Budget Boost verge to your exportation rate mean that the Eddi will use this flashy power grid office , meaning that more of your own generation is spare to deal .
The Eddi works well on its own , but mate it with the Zappi EV battery charger unfold up Modern possibilities . The app lets you adjust priority between the two , so that – for case – spare solar power is used to heat up your body of water first , then charge your elevator car later . If the car is the priority , the Eddi will apply any spare big businessman until there ’s enough to meet the minimum 1.4kW required for EV charging , from which point in time the system will stop heat up piss and divert all spare power to the car .
The MyEnergi product family also include the Libbi modular nursing home store battery . This is check via the same app , and can be prioritize in the same way . Give two or more gimmick adequate priority and the spare power will be part between them . However , unless you ’ve have a grownup solar control panel apparatus , you might find that they are n’t all fully heat or charged by the close of the day .
The Eddi will work around most other car charger , even if it ’s not strictly cognisant of them – it ’ll just use any unornamented power it detects whether or not your gondola is commove . With third - party repositing batteries , there ’s a chance that the Eddi could see a tiny amount of force being exported while the shelling discharge as spare energy from home generation . This could trigger off a situation where the Eddi grabs all the power from the bombardment and exhausts its charge .
Fortunately you may configure an exportation threshold below which the Eddi wo n’t amuse any power , which should prevent this job . In some installment you could alternatively fit a CT clamp to the battery ’s briny connection , giving the Eddi unmediated visual modality of the power flowing in and out of it .
Latest deals
Should you buy it?
If you ’ve got solar or wind power , the Eddi could give you plentiful live water alongside money and C saving . It ’ll let you benefit from cheap off - crown rates , too .
While you may still use the Eddi with off - peak power , it probably wo n’t compensate for itself if you do n’t have a source of renewable energy .
Final Thoughts
As a solar - cognizant power diverter , the MyEnergi Eddi is something of a recession Cartesian product . Designed to work with spicy water supply cylinder , it can also play nicely with other low - carbon devices such as car charger or – with an optional acclivity – a heat pump .
The Eddi is n’t dependent on home genesis , thanks to its canny sustenance for variable and off - extremum duty . However , it ’s most probable to save you money if you ’ve got solar panels or some other form of micro generation , in which case it could cut your petrol habit dramatically – particularly in the summertime month .
Trusted Score
How we test
We essay everything we review soundly over an elongated menses of time . We ’ll always secern you what we bump . We never , ever , take over money to review a product .
Find out more about how we test in ourethics policy .
FAQs
you’re able to wire the Eddi yourself , installing it in series with the immersion warmer . Unless you ’re a very confident DIYer , however , we ’d strongly recommend have an linesman to do it for you .
spicy water can be a with child place to ‘ store ’ excess solar energy , particularly if you do n’t have a bombardment or an EV to put it in . Depending on your exercise and how much solar you have , they could pay for themselves within a couple of years . However , some house can export solar electricity for more than they ’d ante up to heat up water with gas or off - peak electrical energy . If that ’s you , an Eddi might not deliver you as much .
An Eddi detects when you ’re generating more power than you ’re using , and divert the spare muscularity into your immersion heater . That direction you get barren red-hot water .
Full Specs
