Earth Notes: On Website Technicals (2026-01)

The energy series were updated to better match the names used for the energy profiles.

New eheat (electric heat: diversion, boost and heat-pump) and iheat (immersion heat: diversion and boost) time series were added. These are the electricity inputs and cover all DHW and space heat. The old immDHW, equivalent to iheat, was retired.

Efficiency tweaks

In line with Less DHW from Diversion this Summer I updated the frequency-response script to avoid diversion during SSES peaks, and raised the Eddi Export Margin (and Export Threshold). Effects may start to be seen in March.

Archive goodness

Year-end archives pushed out to Zenodo:

• Earth.Org.UK (EOU) public data snapshot including home energy timeseries.
• Earth.Org.UK (EOU) main pages offline archive.

I do not think that the main-page archive HTML is linking to the images that are in the archive, ie is still linking to the EOU images online, so that may need fixing. At least all the key data is probably there.

I extended the heat battery and pasteurisation control system notion of winter from Nov/Dec/Jan to include Feb also, and not to defer an early morning boost in winter when the day is forecast to be sunny since that will likely not be sunny enough for full pasteurisation by diversion!

Silly macOS mail client chatter

Mainly for the record, ie my memory, I am recording here that my entire Internet performance from DNS upwards appeared to be impacted by a very very silly amount of chatter between my macOS Apple email client and the Microsoft Exchange server for the University of Surrey. I turned some features off entirely and shut down the mail client overnight... After a bit more silliness in the morning maybe it was behaving itself again.

Well, maybe not. A sample the next evening with:

% tcpdump port https and host 52.97.X.X

indicates about 300 packets per second...