ReNew 141 editorial: measure it up – the benefits of monitoring

ReNew 141: Store your solar

I’M A big fan of energy monitoring. Most days we check the app from our electricity retailer to keep an eye on usage from the day before. Broken down into half hourly blocks, this proved particularly useful to see the (good) results as we switched out halogen lights for LEDs and got better at turning things like the computer and printer off when not in use (hibernation mode on PCs means you can easily pick up where you left off, and an ecoSwitch is great for quickly turning off printers or TVs). The app also keeps historical usage so you can compare winter to summer, or this winter to the last, useful for spotting a problem energy-user (a plug-in heater perhaps), before the costs start to add up.

Taking it a step further, you can even get near-real-time monitoring. Having just installed a solar system, I’m now a convert to its app which shows almost instantaneous solar energy production and electricity usage. Such real-time data makes it even easier to work out what’s chewing up energy—or as happened today, to tell whether your child has turned on the washing machine as promised while you’re out! Plus, the generation data helps you schedule appliances to run at a good time for solar self-consumption or to work out if your solar system is performing as expected.

In this age of Internet of Things and wi-fi connectedness, there are now so many more options for energy monitoring: some connected to a smart meter, some to a solar or battery system and others independent of these. Our guide helps you understand which type might work for your situation—definitely worth a look to help you reduce your bills and environmental impact. It’s just a pity the same tools aren’t available for gas monitoring.

Our other big topic this issue is energy storage—perhaps more of a barbecue-stopper than energy monitoring! It’s been heartening to see grid-scale battery developments in South Australia and Victoria, as a way to provide grid stability and assist with peak demand. There are solutions other than keeping ageing coal-fired power stations like Liddell open.

It’s great to see early adopters of home battery systems in our audience. Their ‘use cases’ will provide insights and help the market develop—similar to the role many ReNew readers played in the early solar days. It’s also good to see industry trials underway to measure the community benefits, plus government subsidies which a few of our case studies have been able to access. We’ve reviewed the market to provide pros, cons and the range of battery systems available. It’s a rapidly developing area, so we’ll keep providing updates and case studies to help guide your approach.

Plus: ‘home truths’ on how comfort and efficiency can go hand-in-hand, a heat pump hydronic system in action, using ratings tools during rather than after the building design process (there’s even a free tool available so you can DIY), second-life for EV batteries, DIY garden irrigation, a community aiming for net zero energy and much more. Enjoy!

Robyn Deed
ReNew Editor

ATA CEO’s Report

AS ReNew goes to print we are in the final stages of preparing for Sustainable House Day 2017. We are very excited to have 200 homes opening up across Australia, with 20,000 people expected to visit one or more of these homes on the day. The event provides a unique opportunity for people to come and learn how to make their homes more environmentally friendly, more comfortable and cheaper to run.

A diverse range of homes are opening their doors, including granny flats, student rental accommodation with battery storage, new contemporary 10 Star homes and homes where the owners have made gradual changes over a number of years. What they all have in common is that they’ve worked hard to improve the energy efficiency of their homes.

The average Australian home has an energy efficiency rating of just 1 to 2 Stars, making them cold in winter and warm in summer. Draughty and leaky, these homes use about 40% of their energy on heating and cooling. By walking into a well-insulated home you can instantly feel the difference in comfort.

We are also seeing new trends with an increasing number of homes that are all-electric and more homes incorporating battery storage or at least planning for future installation. They must have been keeping up-to-date by reading ReNew!

Sustainable House Day would not be possible without the generosity of the households opening their doors and over 200 volunteers who help out on the day. They are all part of ATA’s community of change, not only taking practical action for a sustainable future themselves but sharing their experiences and inspiring people in their community to do the same.
Donna Luckman

You can purchase ReNew 141 from the ATA webshop.