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THE SOTH JOURNAL

Energy

Ideas, know-how, and a little inspiration for your connected home.

WORTH A CLOSER LOOK

Energy

Australia's grid now lets a home EV charger or battery have its own settlement point behind the main meter

On 1 November 2026 the National Electricity Market (NEM), the grid that covers Queensland, New South Wales, the ACT, Victoria, South Australia and Tasmania, started the main release of its Flexible Trading Arrangements. From now on an EV charger, a home battery or another controllable device can be metered and settled separately from the rest of th
Nov 2, 2026
3
min read

UK's MCS drafts a product standard for home batteries, with no default passwords and secure updates among the proposed rules

MCS, the UK certification scheme for small-scale renewable installations, is consulting on its first product standard for battery storage. The draft, MCS 042, covers home and small commercial batteries. As ESS News reported on 30 October 2026, it could bring IoT cybersecurity requirements into the certification that battery makers need to sell thro
Oct 30, 2026
3
min read

Tesla's Heat Pump Optimization lets Powerwall 3 and 3P in Europe boost an SG-Ready heat pump when solar is in surplus or power is cheap

Tesla Energy announced Heat Pump Optimization for Powerwall 3 and Powerwall 3P in Europe on 30 October 2026. The feature lets the battery system tell a heat pump to run harder when the roof produces more solar power than the house uses, or when grid electricity is cheap. In its post Tesla called the heat pump "one of the biggest electrical loads in
Oct 30, 2026
3
min read

A UPS for your smart home server: Network UPS Tools and a clean shutdown

When the power goes out, everything in a smart home drops at the same moment: the router, the switch, the machine running your home automation software, the Zigbee or Thread coordinator plugged into it, and the NAS holding its backups. Short outages then turn into long ones, because devices come back in random order and anything that was writing to
Oct 30, 2026
10
min read

Modbus at home: read an energy meter or inverter over RS-485 or TCP

A lot of energy hardware already has a local data interface that often goes unused: DIN-rail energy meters, solar inverters, heat pumps and ventilation units often speak Modbus. The protocol comes from industrial controllers and needs no cloud or account. Once it works, you can poll voltage, power and energy counters as often as the device allows.
Oct 30, 2026
11
min read

Renesas RL78/G21: a 16-bit MCU for appliance control boards that halves power draw against the RL78/G13 and starts at $0.56

Renesas announced the RL78/G21 on 28 October 2026, a new 16-bit microcontroller aimed at the control boards inside air conditioners, refrigerators, washing machines and microwave ovens. It is not a wireless chip. It is the part that runs the motor, compressor and sensor logic, sitting next to whatever Wi-Fi or Thread module makes the appliance "sma
Oct 30, 2026
3
min read