I have solar and it's winter down here in Australia so I temporarily put some power plugs on it and connected it to a little heater.
It's nice and sunny outside but cold (14C). We only get 5c aud feed in and pay 38c for power so why give excess it to the power company?

I just set the heater to heat my room up with every watt of exportable power. 
It is making me smile and keeping me warm for next to nothing.

(I'd use it for hot water except I have a heat pump connected to node-red and it can't run on variable power anyway).

Hi Robert,

I'm delighted to hear that you’ve managed to reduce your electricity bill using the WPC3700!

Would you mind sharing a screenshot of your overview dashboard, showing the data before and after deploying the WPC3700? It would be great to see the impact visually, similar to the example below:

(After introducing the PV heater control system)

By the way, could you have the model of your heat pump?

we plan to provide a hardware to adjust the power of the heat pump ,if you are interested about this ,we can use your heat pump as the first batch of the support list and provide you a free device to test.

I got the apricus all in one:
https://apricus.com.au/all-in-one-heat-pump/
It's tuya. You can control it with localtuya. It thinks its a hot tub heater.

being a compressor, I don't really want to be cycling it with too shorter timeframe anyway.
I have it set up so, if the kids have showers later in the evening and it's less than 40V at 1am, I heat the water using the off peak power so I can have. a hot shower in the morning. If it is above 40, I start it heating 3 hours after the sun comes up.
I could probably use the imametter to wait for the solar production but I want it to be heating in the day anyway as I am normally producing solar power and the power is relatively cheap.

The most important thing is to stop it later afternoon when the cost of power is most expensive.

(As an aside, I am a home brewer and I have the mash heater running of a sonoff running tasmota and I have a node-red block that gets the current production power from the iammater. If I have more then 500W excess, I switch the mash heater on.  Now it's winter and I am using WPC3700 to put 100% of the excess into the little heater in my office I don't ever have excess, so I might have to run it overnight as well.
The little yellow bars are the mash heater.

here is a before and after, You can see the export is vastly reduced (being winter it's not much much export). And, you can see the heat pump running on the first day. (the first little peak is me running the little over for breakfast :))

Thank you so much for your continued support. We truly appreciate the time and effort you’ve shared with us—your setup and feedback are always inspiring to our team.

Could you also share your Load Consumption Analysis Report, grouped by day (please select “day” in the “group by” option), showing the results before and after you started using the WPC3700?

This will help us better evaluate the impact on electricity billing and overall consumption.

 We are collecting these results to understand the electricity billing reduction effect of WPC3700.
If you can provide this information, we are happy to mark your contribution as “B level” in our reward points program. You can submit the URL of this page and ask for the corresponding reward points in IAMMETER system.

Thank you so much for your help!

I don't have that page on my web interface. 

Sorry, I forgot to mention an important prerequisite for this report:
You need to install a dedicated meter to monitor the specific load (such as your heater), and set the meter type to “load” in the system.

You can find more details here:  https://imeter.club/topic/364?sort=default

Thank you for your feedback! If you have interest , we are willing to send you a free WEM3080 single-phase meter, which you can use to monitor your heater.

Installation instructions:

• Please install the WEM3080 to monitor your heater.

• Add this meter to the same “place” in the system where you have your existing grid meter.

• Set the meter type as “load”.

After setting this up, the report will be available and you’ll be able to see what percentage of your heater’s consumption is supplied by solar energy.

If you have interest about this report ,please email us ([email protected]) to let us know your specific address and phone number, we would arrange the shipping of WEM3080 from the warehouse in Sydney.