There are four sections to be followed to deploy the Energy Manager system to your Home Assistant Green or Yellow, Raspberry Pi 5, or Intel NUC.
You should expect the installation to take you between one and two hours, depending on your skill level. As much configuration as can be done without your input has already been done, but we are limited by what Home Assistant will allow us to automate to a certain extent. These tasks must be done by yourself.
If you decide to use Energy Manager to manage your solar and batteries, the Amber Electric Smartshift app must be configured so that it cannot control your inverter. If you leave it enabled, both Energy Manager and Smartshift will battle over the controls and produce unexpected results. You can still leave Smartshift with access to your inverter so it can show its graphs and charts, but it must not have control access.
Links to each of these steps are detailed below:
Note that generally a cheap Intel NUC from Amazon.com.au, or similar, should perform well and possibly be cheaper than purchasing an official Green or Yellow device (but potentially more difficult to initially configure). However, if you were to purchase a Green or Yellow device, you would not need to perform step 2 above. The Raspberry Pi would still need step 2 performed, but it is relatively straightforward.
Please note that the first two steps are not unique to the Energy Manager system; they are prerequisites to getting the base Home Assistant working. Step 2 is by far the most difficult step that you will have to do, but this is a requirement to get the base Home Assistant working that Energy Manager is built on. However, step 2 is not required if you are going to use a Home Assistant Green or Yellow device.