Upgrade your home.
Downsize your bills.

Lower bills, lower home loan repayments.
Discover what you can save with 28Watt.

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Lowest green loan rates in market
Free and personalised advice
Qualified mortgage broker and energy efficiency expert
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Not your average broker

28Watt connects you with lenders that reward energy-efficient homes and upgrades, so your place is cheaper to run and cheaper to finance. Discover if your home is eligible in less than five minutes, without impacting your credit score.

  • Fee-free service - You pay us nothing.
  • 60+ lenders - More choice, better rates.
  • Exclusive green loans - Savings most brokers miss.
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How we help you save

Home loan savings
Home loan savings
Discover what discount you could be eligible for on your home loan rate if you've installed solar or other energy efficient appliances.
Energy bill savings
Energy bill savings
No matter your budget, explore how even the smallest of home upgrades can make a big impact in lowering your bills.
Quote savings
Quote savings
Have a quote from an installer and want to access their best 'cash' price? We'll show you the cheapest way to finance your upgrades.
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How David will save $55,248 in the next 5 years

Living in a detached, four-bedroom home in Newcastle, NSW - with electricity and gas expenses climbing, David saw an opportunity to future-proof his property by embracing home electrification. And that's exactly what he did.

  • Lowered his energy bills
  • Reduced his home loan rate by 1%
  • Increased the value of his property

Latest Articles

Latest information and advice to help you transition to a sustainable home.

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Green loans
Unlock Maximum Savings: ING's Sharp Mortgage Rates + $1,500 Cash Back for Home Upgrades

Unlock triple wins with 28Watt—exclusive access to ING’s refi rates from 5.54% p.a., 3.74% green-upgrade finance, and $1,500 cashback. Slash mortgage and power bills; upgrades must be done by 30 Sep 2025. Check eligibility in less than two minutes.

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Green loans
How Green Loans Can Finance Your Home Battery System: Complete 2025 Guide

Discover how green loans and the new federal battery rebate can make home battery systems affordable. Complete guide to battery financing, rebates, and payback calculations for Australian homeowners.

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Energy efficiency
Aussie Buyers Pay $118,000 More for Energy-Efficient Homes

New data shows energy-efficient homes sell for $118,000 more across Australia. Get your free assessment and discover green loan options to maximize value.

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