I wanted to propose a few ideas that could be integrated to OEM, to allow people to not only monitor their energy production, but also (have the system) make changes in real life based on that information. This will allow them to buy power at the lowest price or sell the renewable power they generated at a greater price (selling it back to the mains electricity grid during peak hours).
The idea has also been posted online at
To grow the project organically and add in these features proposed, it would be best to use following procedure:
first off, it would be best to include OpenEVSE to the project.
OpenEVSE could adapt their charger to also allow charging: nickel iron
batteries, deep cycle batteries and regular lead-acid (SLI) batteries.
These are the most common battery types used in houses/off-grid
systems, and are also more ecological/durable then the lightweight
battery types used in electric vehicles. Make sure the charger allows
for using 120V, 60Hz as input power (US system) as well as 230V, 50 Hz
(EU system). Both these would need to be supported by the
emonbase/emonpi as well btw.
next, as you’ll have read, the most important part of the proposed
system is the use of wirelessly controlled socket switches -like the
ones from http://www.fifthplay.com/en/news/press/smart-
energy-box - Either allow communication (reading of data between the
switch and the emonpi/emonbase) and ability to activate/deactivate the
switch with this, or support another (similar) wirelessly controlled
socket switch type
make sure the data received (active and deactivated switches, and
power consumption) gets shown on the openenergymonitor software so the
user can read it as well
one of these switches would be placed before the batteries. Then, integrate the static system proposed at the forum pages (which involves using a table with hours when there’s peak and off-peak power available at the mains electricity grid, as well as the price range limits system to trigger the
emonbase/emonpi to activate or deactivate certain switches when its
currently peak-hour or off-peak hour prices).
the dynamic system can then be integrated later; using the static
system only would be sufficient for the time being. The changing of
the solarpanel tilt angles can also be integrated later (if at all).
Since the switches would allow for activating/deactivating other
renewable power plants at home, most of the benefits will already be
available when the above has been done.