FREE hot water using the Eddi energy diverter from Myenergi
Eddi is an intelligent energy diverter which helps prosumers use self generated energy at home.
Taking solar PV or wind energy, the Eddi measures the amount of energy being generated and diverts this so it's used to heat hot water with an immersion heater.
Eddi measures generated energy using a directly connected current transformer (CT) or a wireless CT with the Myenergi Harvi.
Eddi can also be used to divert energy to other resistive heating loads such as storage heaters, underfloor heating or even an electric Aga.
🕐 TIME STAMPS 🕕
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00:00 Eddi mircogeneration energy diverter from Myenergi
00:20 What is Eddi?
01:32 Solar PV energy flowing to the grid.
01:50 Diverting solar energy to an immersion heater.
02:59 Boost function combination of PV and grid energy.
03:53 How does the Eddi know how much PV energy is being exported?
04:14 Measuring current with a Harvi wireless current transformer.
05:00 Under the cover - How does Eddi work?
05:54 Myenergi Varisine PWM technology
06:43 Electrical connections - option for second immersion heater.
07:19 Current transformer connections.
08:05 Expansion card to control water temperature or auxiliary contacts.
08:49 Myenergi App
09:05 Other load options
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🎦 Presented by
Gary Hayers - editor eFIXX
Gordon Routledge CEng MIET - technology editor eFIXX
#efixx #morepower #myenergi
This video is included in the eFIXX September 2020 live feed event click the link below to win great prizes. kzhead.info/channel/PLmWOIPxaBWH6g_nT1ayroKgzBZyo52_Yy.html
Yes the Eddi set and use when electric is cheaper at night fantastic bit of kit
Great idea from Myenergi. Thanks for telling us about it, yet another way to save time for the Electrician and money for the Homeowner.
Check out Artisan Electrics channel, his latest video shows one being installed in a real life situation.
Just watched Jordan from artisan install one of these last night
Lol completely agree I'm a big fan of nagy been watching him from the start. The Eddie is a good idea but hot water cylinders are becoming a thing of the past
What a fantastically presented video.
Great video and really informative thank you for spending the time and effort to do that!
Brilliant video! 🙌
Great video
I have one of these with the zappi great job, always have shower, have added pump to my hotwater tank its amazing. never use my eclectic shower any more. Also use it when have plenty of solar to fill up my hot tub.
Great video and information 👍
Interesting bit of kit 😎
I have both Zappi and Eddi. They are brilliant!
Do they affect FIT payments?
@@robrees8207 If you are on 'deemed' export FIT (i.e. no export meter, just a generation meter), then no, they don't affect FIT payments.
Thanks. Do I still have to notify my FIT provider?
@@robrees8207 Not that I'm aware. If you don't have an export meter you are free to use as much of your generated power as you can
Great video I now understand what it is and what it is not.
Good video. Could the Eddi be used off peak (Octopus Go) when rates at night are cheaper than gas?
Just want to mention - Sunsynk Solar systems can easily do this what the EDDI does. You set the menu to export power via the AUX port to drive the immersion heater. Surplus energy from the solar panels are used to charge the batteries while power is sent to the immersion heater. The export kick in percentage can easily be adjusted to send power to the immersion heater.
As the Eddie alters the output sine wave depending on the amount of export does that effect the type of RCD on the feed cable, should a type F be fitted like you would with a variable speed drive.
I have 3 Immersun devices, eddi is the more modern device. A really good concept👍 But the energy you divert is in real NOT for free! Your PV and the installation has its price! Its a good Idea to use your energy for yourself, here in my country you get only roundabout 6 ct for every kWh. For every kWh from the grid, you must pay 36 ct. 😉
Well done guys. A good setup to show how we can set it up and use excess energy. It's nicely explained. Tell me can I make the kettle constantly hot....in theory or a big burco we use to use the forces.
Yes you can do that
I don't have a boiler but I do have a hot tub. Would be great to get it working with that.
Please do a video on using this device on an off grid inverter like Axpert or Goodwe. Our installer assured us it is incompatible with most inverters.
Brilliant video 2 questions I'm having an issue connecting my ginlong data logger stick via the solis cloud app due to too good of thick well insulated walls.No main body of the ginlong data logger stick is visible,I only see an antenna on top of the eddi like in your presentation? Would a larger antenna improve the wifi quality for connection? Second question How do you prioritise using the KW produced by the solar panel into the following order: override use of electricity produced by the grid in 1. The house 2. The Zappi 3. The Immersion ( Top Cylinder ) Thanks again for an amazing video
Hi. I have an Eddi energy diverter wirelessly connected to my solar panel setup. It works great, but I am finding that if I use all the hot water and try to heat more through the Boost, it is taking a long time. You mentioned the bypass switch at the bottom for a quick top up. Would using the bypass switch heat the water faster the Boost signal? Does the diverter limit the power getting to the tank compared to direct connection to input?
I have only one immersion heater element connected to a off peak tariff timer, if I have the eddi installed can I still use off peak heating in winter and solar in summer?
I'll be getting a version of this made by SolarEdge. Same Principle. I've got a 170litre hot water tank. That's about 10.5kwH of hot water storage if you raise the incoming fresh water temperature by 50 degrees (15 degrees --> 65 degrees). So if you use up that entire tanks worth of hot water each day, then this is an excellent option. Be mindful that a 10kwH battery for comparison is between £5-£7k at the moment. So the Eddi is very good value for money.
Anthony Dyer same principle up to a point. However, functions, options, and performance are not the same. In addition, Eddi will work with a hot water heat pump, and the product from SolarEdge does not. If you, also, have a car charger, they will both work individually and together to increase your production of solar energy. They have numerous other functions not implemented by SolarEdge, and the installation is simpler since no anchoring of a copper rod is needed. No wiring is required to a central inverter or between them. I encourage you to read the manual for both the Eddi and the Zappi.
We have an electric central heating system from Thermaflow model TH12 330U Mk2. This is effectively an immersion heater which stores hot water which is heated up in off peak and used later to provide HW and CH. Can you confirm for me that the EDDI unit can be connected to this Thermaflow boiler. We could then use spare energy from solar to heat up this tank.
This Myenergy looks very familiar ...That's it it's the IMMERSUN diverter, with two heaters, same display and button arrangement. Sadly our Immersun went bang and have replaced it with the Iboost yes only one heater so have had to direct the garage convection heaters to the mains .
In our case we have the Immersun unit that provides similar function. As we run 2 x 210L tanks on 4kW solar system the Immersun is located near distribution panel and the connected to immersion heaters using existing cabling. Installing this way the unit is near the meter so current transformer installation is trivial. Generally our boiler is OFF from late April to late September and we do not use the boost function.
Sounds like you are using all your solar PV for water heating. Is there anything left over?
@@markrainford1219 when we have good sun there are periods when we export to the grid. Not done a detailed analysis (no export meter) but suspect not worth getting a battery
It would be interesting to know how well the immersion heater element copes with continuously being switched on and off due to the variable solar energy available.
Mine currently doesn’t have the eddi installed but is instead wired up directly to the inverter which means when power is above 1.3KWH it turns on, this turns mine on and off all day everyday and has done for about 10 years, so I’d say no damage done at all.
I have the IMMERSUN ( proportional load diversional controller ) unit which was the predecessor to the EDDI. Mine has 2 ct coils, grid and pv. It monitors pv production and house consumption and dumps the excess energy into an immersion heater. The 2nd circuit ( when water heater max is reached) supplies an electric towel radiator. There is also a 3rd priority which is a relay function to permit ( for example) a battery charger to operate. The unit looks identical to the Eddi. I wonder if the Harvi or the hub would see it ? My Immersun device has a separate accessory too ... a little bridge/router that links to the antenna and wifi, which allows online monitoring also !
Immersun went bust and My Energi bought the patent
May I ask what voltage is supplying the immersion 800w does the voltage change?
Couple of questions: (1) if you have underfloor hearing with a timer/controller, can you set up a minimum current to be always provided to keep that powered? (2) if I have a zappi and hub already with CT clamps can the Eddi tune in to that or would I still need a harvi?
Great questions - we are doing a full installation with Zappi, eddi and harvi - so stay tuned.
Unlikely. The current is set by the load impedance and the voltage that is applied to it. Usually electrical things just turn the power on and off using a fixed voltage - at mains voltage. For electric heaters, the controller is typically a simple on/off device, and that is cheap and easy to implement It takes more electronics to be able to control the current to it and start using techniques such as pulse width modulation, or an alternative is to directly control the current by continually variable voltage. It's a specialised form of control and it is unlikely a power diverter for renewable energy will incorporate such functionality.
Thank you for the video, what happens at night when there is no solar power does it take power from the grid or does it just turn off automatically?
can program it to heat on night time off peak and solar when available in the day
Nice video - I have a Popular Cylinder Dual Thermostat which fits inside the thermostat pocket of my cylinder. It doesn't provide a temperature reading to Eddi, which requires a PT1000 sensor. Do you have a recommendation for a thermostat which will give Eddi the temperature of the hot water in the cylinder? The aim is to be able to automatically boost the temperature in the cylinder with the boiler, should we need to.
Our Immersun heats the water whenever the immersion thermostat is closed and spare solar electricity is available. The immersion heater is used as normal. When the Immersun detects the immersion heater thermostat is open it moves on to the next tank
Hi, I would like to use the Eddi solar Diverter to harness the wasted energy from my solar panels to power my Anker 767 power station. Please could you advise me how I could do this.thanks Ian
I had the Eddi installed 4 days ago. 2 days ago I noticed that two blue lights are showing under the boost button. Why is that? I did not press the boost button. What is wrong?
I am hoping to put 1320 kw solar on my narrowboat for battery support and I want to be able to heat my calorifier instead of running the engine for hot water when moored up in the country . I like the kettle idea to explain. We have 24volt system on board . The calorifier is heated by immersion, engine running or diesel central heating, I want to heat from the sun. Help.
Mine is no longer used. The export payments for my solar make it redundant (it would simply cost more to use). Zappi the same. Long may Octopus continue to innovate.
How long to realistically pay back the very high Eddi costs? Many years?
Ach, been involved with renewables and energy saving products for a number of years, mainly back in 2012-2013, these products look fancy and the concept always sounds great, sales pitch, glossy brochures etc - however the savings are negligible compared to what you pay for the device. Forecasted savings and claims of whatever % on your energy bills never tends to be the true figure. ROI is always high. A neat looking little product if you have money to throw away though. Probably similar to immersun, iBoost, etc. It’s like when they introduced domestic voltage optimisation, you’ll never save as much as they claim.
David S another TV couch expert providing expert opinion?
E K If you actually read my comment I said I’ve been involved in the renewable energy sector with of all of these types of energy saving products. Plus I’m an electrical engineer. Enlighten me with your experience and knowledge then I’ll maybe talk to you.
@@davids5498 I concur to a degree, Immersuns are just made terribly and fail all the time. If you exclusively use electricity to heat your DHW and don't use gas, then it will save you money - assuming the unit doesn't fail before ROI. An Eddi is £400. If you only use electricity to heat your hot water, your'e talking a ROI of around* a year. Assuming 15p per kWH - 45p an hour. £400/0.45p=888.88 /365 = 2.44 hours a day. Unless you live alone, an immersion is gonna be on for longer than that each day. Obviously being in the UK you're not necessarily going to get 365 days with enough light to heat your water tank, but an ROI of 18m-2 years isn't too bad (if it lasts that long!)
David S I am not impressed that you have years of experience in renewable energy or that you have years of engineering behind you. This is about being a nice person, and you mister do not come across as a nice person. Why? You said, “probably similar to immersion, iBoost, etc.”. You see. You don’t know the product either professionally as a renewable person or from a performance perspective as an engineer. However, you are willing to say, “you’’ll never save as much as they claim.” How do you know what they claim? In addition, you said, “these products look fancy and the concept always sounds great.” You work in renewable energy with products making fancy claims like solar, wind, and storage batteries, and you are unwilling to inspect a new product? You sound either tired, bored, or are you simply willing to throw dirt at anyone that looks at you the wrong way? I am calling you out for accusing a new company in the renewable energy industry of making false claims. Now you prove me and them wrong.
E K Mate, what’s your problem haha. I gave my opinion and you LITERALLY called me a TV couch expert for no reason. Seems like you are the one who’s not a nice person. What you talking about? I know what immersun claim as they LITERALLY state the savings of £250.00 on their website. Looks like you should do your research before you start arguing with someone who actually has knowledge in this field. I’ve seen all these products, the majority of them are just something to sell which are all relatively expensive and claims are exaggerated.
I'm hoping to install around 8Kw of solar panels and then get a Zappi to run a modest 2nd hand electric car. As the property has an electric shower I would like to send power to a bank of THREE 60 watt, and a 500/1000 watt electrical heaters as I'm disabled and enjoy a warm area in my living room as I prefer to concentrate heat into one room as opposed to using the gas combi boiler to heat the whole place as I live on my own. I also use a 5 litre urn for not drinks so would like to know if using a Harvi and Zappi then I could automatically use available solar power to first charge the car and once that was full automatically get the solar to heat the run and then my bank of small electric heaters? At the moment I only have a small amount of solar and use the ct data on the living room monitor to see if I am generating enough power to manually turn on the heaters which is a bit laborious. Sounds like a near perfect match to my needs?
We are looking at a similar situation in a new series coming soon.
How do these things interact with the boiler, do they work in unison to reach the tank stat temperature..?
It's just a device that reads your solar panels power output and puts excess power to use by feeding it to the immersion element.
The thermostat for the tank decides on the final temperature of the water
If you use the boost and have batteries will the boost pull the power from the batteries or the grid?
It depends upon how you’ve set your system up.
@@efixx so I'm totally new to this, my solar install with batteries was only yesterday I have no clue on how to set this up correctly.
Can this be used in conjunction with battery storage, ie when the battery is fill then it can switch to heating water?
Yip
There seems to be a trend where the products are becoming really clever but very simple to install. Its good, but will it lead to the death of the old school spark. Seems like we need to adapt as quick as the products.
Plug and play is great for Do-it-yourselfers - but there will always be a high percentage of people that will want you to figure out what to install and to string it all together for them (they’re too busy with their lucrative day-job to mess with any of it)
How about doing a proper review with a hot water heat pump in a residential solar setting?
If we can get access to a site we are happy to explore further.
efixx why not ask myenergi when they might have a customer with a solar rood interested to do this type of installation? You can provide the installation for free, and gain access to a ‘real’ environment, and in return you gain access to the necessary devices.
We are planning more in-depth content in this area. ATM getting access to occupied homes 🏠 is a challenge.
efixx I have faith in you.
I have a Boiler that is does not have its own direct connection (fuse) to the consumer unit. Instead it uses a standalone wall mounted fused switch. I do have solar panels. Can the Eddi be utilised with a hot water boiler that is fused directly at the consumer unit?
Yes it should be possible.
Hi. I have solar panels with immersun diverter for my hot water. I have a podpoint for my ev due in a few months. Would the eddi be better to use panels to charge the car? What energy company would be best as I'm with Scottish Power who don't support ev charging
Also getting a smets2 installed
Does the Eddi CT clamp not interfere with the export limiter CT clamp? Can the two CT clamps work side by side on the same main grid input cable??
Why would you need 2 clamps on the same cable?
The On grid grid tie inverter uses a ct clamp for export limit. Your power diverter also uses a ct clamp ....that makes it Two ct clamps
I would separate the two CTs by a short distance to ensure there are no fringing effects, distortion in the magnetic field as the field passes through the coil/turns of the other CT. And then use a clamp meter to check the output of the CT before and after the second CT is added to ensured continued accuracy of it when the second CT is introduced. And I would do this for both CTs.
I have a hot water storage tank, the water is heated by the gas boiler. The electric heating element is essentially for emergencies and needs to be manually turned on. (New build house) - does this system addition essentially replace the gas element?
It can be used instead of gas - but just need to compare gas kWh prices vs electric kWh . We are going to explore this further as part of our smart home take over series.
@@efixx great. Ongoing cost would be the deciding factor in buying this at the same time as the Zappi I’m looking at.
If you have Solar PV then it’s a no brainer and some of the new electricity tariffs such as Agile Octopus.
How does eddi know cylinder water temp and whencto stop sending it power ?
Had forgotten the imersion has temp cut off on it. 😢
Just had the eddi installed but the heatsink temp is at 30oc. How can the temperature be increased? We have a gas central heating too but not sure how it all works yet. Any help appreciated
Sounds like the thermostat on your immersion heater isn’t set correctly.
Hi Guys, Do electricians need to be trained by Myenergi before thy can install the Eddi or Zappi2?
Yes - Luckily they have some online training - you may recognise the team who produced them. kzhead.info/tools/rxxe3cS6E23GtXNlflqvoQ.html
Would it not be cheaper to heat the water with gas rather than the boost on the eddi?
Depends on where you electricity is coming from - eg excess Solar PV or agile tariffs
How does this compare to the iboost + ???
Similar tech we think - we’ll have to get on to try it out. One think we notice on the iboost - the CT transmitter needs batteries- the Eddi can use the wireless and battery free Harvi.
Eddi have also 3phase version?
No just single phase
What I don’t get is why they are limited to just 3.6kwh , it take a heck of a long day to heat 300 litres with systems now tipping 6-8kwh on average you would either have to do 2 units or may as well just use a smart wall plug connected to an Emerson wall socket that can turn on off at cheap rate
It doesn't really matter how long it takes to heat the water. You're taking energy produced from the sun, using that to heat your water and reducing how much electricity you consume from the national grid, and you save money by doing that. You don't save any more money by heating the water faster. To use figures posted by another user, figures I have confirmed are accurate, if the tank is 170 litres, and you heat the water up by 50 Celcius, it will take approximately 9.8- 10.5 KWh of energy to do it. (The specific heat capacity of water is approximately 4200 joules per kilogramme per degree Celcius), and 170 litres of water weighs 170Kg. So you can do the multiplication and conversion from joules to KWh. Heating the water slowly could result in energy lost to the environment but the tanks are well insulated. The only counter argument to that above is if you have a large PV installation and you have more surplus power being produced than the power rating of the diverter, and then you're not benefiting as much as you could from the solar panels.
Gordon's looking younger, is it the water?
🤣 maybe he is 62
So many people took out their hot water cylinders when they fitted a combi boiler. Now need to refit one and integrate it with hot water from combi. Does not sound straight forward or cheap
I went back to a cylinder after my last combi (16yr old) was getting too unreliable. Gone for a megaflow as they have a good flow rate.
does anyone know what to do when going on holidays and want it all exported ?
Either reprogram timer or just switch off the whole circuit
@@efixx yeah I knew I could turn it all off but then I lost the monitoring, anyone know if way to do it while having monitoring. looks like no sep switch for immersion
Has anyone attempted this with storage heater - they normally require dual supply.
I use the Eddi second immersion output to heat one. great for sunny cold days.
I'm Iraqi and I want to study in Germany. Which specialties are more demanding?
Learn anything that gives you a foundation in Electrical - become an electrician - within electrical learn everything you can about energy storage
Learn lots of maths and physics and then apply to university to do a degree in either electrical or electronic engineering. That depends on how much money you have, and any sponsorship/grants the university has available, and of course, your intelligence level. I make no assumptions on either. If your mathematical ability is not very high, then consider going down the electrician route.
It all looks good on this Video, but what they don't tell you is that this device does not work if you have ZERO EXPORT /not allowed to export or have an Off-grid inverter
Why does it not work for zero export tariffs?
"Free" is a very subjective term. Lets be 100% clear, whilst this is without doubt a clever unit it firstly relies upon you having some form of electrical micro generation installation - Solar PV, Wind Turbine etc. Then the unit itself is also not free - appears to be around £400 supplied + installation cost. The Harvi unit seems to be around another £100 supplied. There are other units available from other manufacturers which seem to range from about £300 plus installation. Whether these are fully feature compatible I don't know. I think it would be reasonable to expect a qualified electrician to charge a couple of hours work to install this. That's making the large assumption they wouldn't require an EICR prior to this also........ Return On Investment (ROI or payback) is probably around minimum 5-7+years depending on your energy consumption or use case and installation costs.
The other factor is the energy supply tariff and export tariff related to the solar PV.
Stop ruining our fun with all these facts!!
I use my Eddi to heat hot water with Octopus Go at 5p/kWh and then top-up during day with solar. Use roughly 4.5 Wh/day . Was using 10kWh/ day using gas. Saving £100/annum and reducing fossil fuel and CO2 .
How do you make any savings with these? My off-peak go tariff is 7.5p kWh. My gas is 7p kWh. So if I was to heat my hot water cylinder up at 00:30-04:30 it would cost me extra to do so. Likewise, if I divert my excess solar to an Eddi, I will save 7p kWh gas but as I am on the a SEG tariff I will not be getting the 4p kWh for exporting the excess solar. So I am really only saving 3p kWh. At £500 supplied and fitted that is a lot of 3p’s to see a return. It might have worked great with FIT payments but not now, Or am I missing something?
@@jameslarwood5276 your gas boiler heating the hot water cylinder will loose 15-20% in efficiency maybe more if its not condensing when running DHW. you are using 100% efficiency figures for gas.
eddi need to make a dedicated unit for 3 phase its a nightmare trying to wire it into a 3 phase boiier
Please inform the viewers that the unit does not work on an Off grid inverter like an Axpert or Goodwe so you are restricted to using export/ grid tie inverters WITHOUT ZERO EXPORT configuration only. This makes it unsuitable for many applications.
Did you pay for the Eddi? Di you pay for the associated PV, etc? So how is it "free"?
It is free in that once all the apparatus costs and installation costs have been paid, there is no charges being incurred for producing and using the electricity generated by the solar panel. That is quite accepted as what is meant by free, compared to your consuming electricity from the national grid which you are charged for per kWh. And obviously, when installing renewable energy generation systems, the total cost of ownership is important and how the pence per kWh compares to using national grid power.
@@deang5622 Yes, but you spent money on a system and a product that you no longer have and could have paid for hot water with. It's not free until all the initial costs have been absorbed by hot water production which is years. It's called ROI (return on investment). Look, I do it too, put in systems that take years to recover but I do it for autonomy and to hedge inflation costs but it's not free.
@@mosfet500 Only true if the user is not using the system anymore. And total cost of ownership along with a comparison of the pence per kWh for both the photovoltaic system and the national grid consumed power I already covered.
@@deang5622 No, it's true right up to the point where the ROI is achieved. After that point it is free, before that it's not. If the systems are used to run other appliances, house, whatever then then it is free once that ROI is realized. That's specific to you and relative to everyone else, if someone has their system paid off and has reached the ROI then it free for them specifically. Bottom line, can you but this device and have free hot water? No, the money it cost for the device has to be accounted for.
@@mosfet500 No. You are focussing purely on the ROI, or pay back period. There are other ways to assess the cost of a project.
Not really free energy, or at least not until the Eddi is paid for. Don’t get me wrong it’s a great unit, I’ve have one but it does have a cost and that’s quite high.
Free hot water after you have avoided the £400-£500 of grid electricity or gas units that the Eddi cost.....plus the Harvi too of course.....and the solar PV. I get fed up with return OF investment being ignored when this type of tech is marketed. How many years to break even?
Indeed mate. I think it's expensive and I don't need to pay to have it installed.
The aim of this video was to explore the product itself. If you dig around KZhead you’ll see lots of Eddi owner videos talking about the economics etc.
@@efixx but the title is FREE hot water....
It probably works out as the most expensive and least convenient way of producing hot water not to mention the least efficient with PV panels being only 20% efficient. The DC then goes through an inverter to convert it to AC to power an immersion heater! Might as well just have one or two PV panels permanently wired to a 500W immersion heater. Or way better still, wet solar collectors.
Steve Chambers Exactly. This is the point I made on another comment here. ROI, install cost, etc
BUILDERS DONT LIKE IT WHEN CATS SHIT IN THE SAND THEY ARE USING CATS ALSO DONT LIKE IT WHEN BUILDERS USE UP ALL THE SAND THEY WERE SHITTING IN