Measuring CT Cable Resistance
Cable resistance matters!
Field notes
Insights
Field notes on energy monitoring, useful grants and measured improvements.
Energy use
Game On Grants
Summary Purpose: Helps community sporting clubs reduce energy bills, cut emissions, and improve climate resilience. Funding amount: Clubs can apply for one-off grants up to $100,000 . Funding rate: Grant amount can be up to 100% of eligibl…
NSW Sub Metering Grants
Updated December 2026 NSW Grant Submetering Grants Round 2 Funds permanent sub-metering (e.g. PhiSaver) - purchase and install up to $20,000 and 50% of cost. Key Requirements: NSW businesses with energy spend >$200k/yr Itemised quotes (no…
Commercial Energy Monitoring with SQL
We've added the ability to upload from an IotaWatt to SQL database. Rationale TimescaleDB (a superset of SQL) is a good choice for a time series database. Currently IotaWatt and by extension PhiSaver (which uses IotaWatt) supports a few me…
SQL upload added
Adding an Uploader to esp8066 IotaWatt firmware Goal We're adding a PostgreREST uploader, to enable the iotawatt to uploader to PostgreSQL, via a RESTful API. Another goal is support for building on linux. It's case sensitive! Setup Get th…
Sustainability Grants for SMBs
PhiSaver and its partners can assist you in applying for grants to fund your energy efficiency For small and medium sized businesses to reduce their bills Get 50% of the cost of energy efficiency equipment. Find your savings with PhiSaver …
Should I buy a new fridge?
TLDR> Yeah, you probably should. My 15 year old fridge was pretty tired. Its seals were decayed and I considered just buying a new fridge. But would I save energy? PhiSaver can tell us! Typical Usage Daily energy consumption of a oldish f…
Hotwater: Make it efficiently
Question: In Brisbane, Australia what's up with hotwater? Method: These data are mostly from Brisbane houses from March to September 2023. Units are kWh/day mostly. Typical family of 3 but varies. Answer: read on. Does it matter? The best …
Improving fridge efficiency
A recent client has a number of fridges, including wine fridges. Other work had reduced the pool energy (see pie chart) to a reasonable level; the fridges ("power") were next on the list. By writing some custom queries and graphics, the c…
Video: Pool Pump Energy
Check out a typical site's analysis in this video. Despite being inconspicuous, some pool pumps can use more than 50% of a house's energy. PhiSaver can identity and track improvements. When considering your pool usage: Use PhiSaver to ide…