Energy knowledge centre
Helping New South Wales households and businesses understand the rebate programs, solar panels, battery storage and EV charging.
Latest articles
rebates
The federal Cheaper Home Batteries discount takes roughly 30% off an eligible battery, and connecting it to a Virtual Power Plant unlocks an extra NSW Peak Demand Reduction Scheme incentive. Here is how the two stack, who qualifies and what the paperwork looks like when we handle it for you.
6 min read · 14 August 2026
rebates
Small-scale Technology Certificates are created the day your system is installed, based on its size and your postcode zone. We trade them and take the value off your quote — this explains how the number is calculated and why it shrinks each year.
5 min read · 12 August 2026
rebates
A VPP lets your retailer discharge part of your battery during peak demand in return for credits. We look at typical NSW offers, what happens to your backup reserve and how VPP membership interacts with the state incentive.
5 min read · 10 August 2026
products
A battery stores the surplus your roof makes at midday and releases it through the evening peak. We cover usable capacity, depth of discharge, blackout protection and the payback maths for a Sydney household on a time-of-use tariff.
6 min read · 9 August 2026
products
With dozens of panel, inverter and battery brands on the market, the differences that matter are cell technology, warranty terms and whether there is real support in Australia. Here is how we compare them before recommending anything.
6 min read · 8 August 2026
products
The inverter is the brain of your system and the part most likely to need service first. We explain string versus hybrid inverters, why hybrid matters if a battery is in your future, and which brands hold up in NSW conditions.
6 min read · 7 August 2026
guides
Product warranties, performance warranties and real-world degradation are three different things. A quality tier-1 panel loses under 0.4% a year, so it is still producing around 88–90% of its original output past 30 years.
5 min read · 6 August 2026
guides
In almost every case, yes. Without solar a battery can only shift cheap grid power, and most rebate programs assume a generating system. Here is when a battery-only install can still make sense.
6 min read · 5 August 2026
guides
A 7 kW home charger set to solar-surplus mode can add most of a daily commute from your roof alone. We cover charger sizing, tariff timing and what changes if you also have a battery.
5 min read · 4 August 2026
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Talk to a Roo Solar energy consultant about the right solar and battery setup for your home. Free advice, no obligation. Find us at 1/457-459 Elizabeth Street, Surry Hills, NSW 2010.