South Australia Energy Plans 2026

The SA Energy Market

South Australia has the highest electricity prices in the National Electricity Market. This is driven by high network costs (SA Power Networks), reliance on intermittent renewable generation (SA leads the country in wind and solar penetration), and limited interconnection with other states.

However, SA also has the highest solar penetration per capita in Australia: over 40% of homes have rooftop solar. For households without solar, finding the right plan is critical.

Network Distributor

SA Power Networks is the sole electricity distributor for all of South Australia. This means network charges are uniform across the state: pricing differences come from retail competition.

SA Default Market Offer (DMO)

The AER’s final DMO for 2026 — 27 (effective 1 July 2026) set the residential reference price at:

• SA Power Networks: ~$2,334/year (up 1.4% from $2,301 in 2025–26 — SA was the only DMO region where residential prices rose)

Market offers in SA are typically 15 — 25% below the DMO. It is essential to compare plans and switch regularly: out-of-contract customers on standing offers pay significantly more.

Best Electricity Deals in SA

• Origin Energy: Strong SA presence, competitive rates
• AGL: Good discounts for solar customers
• Momentum Energy: Competitive rates, no exit fees, good FITs
• Red Energy: Growing in SA, excellent customer satisfaction
• Simply Energy (Engie): Often offers competitive fixed-rate plans

Solar in South Australia

SA's high solar penetration means feed-in tariffs are moderate compared to other states. Typical FITs range from 4 — 10 c/kWh. Many retailers have reduced FITs in recent years due to grid saturation.

If you have solar, focus on:

• Self-consumption: Shift usage to daytime when solar is generating
• Battery storage: SA has good battery incentives through the Home Battery Scheme
• Time-of-use FITs: Some retailers offer higher FITs during peak periods

SA Gas Plans

Gas in SA is distributed by Australian Gas Networks. Many homes have gas for heating and hot water. Check for dual-fuel discounts if bundling with electricity.

Rebates and Concessions

• Energy Bill Concession: Up to $262/year for eligible low-income households
• Medical Heating and Cooling Concession: For medical conditions requiring temperature control
• Life Support Concession: For registered life support equipment users
• Home Battery Scheme: Subsidies for solar battery installations

Apply through SA Government's Concessions website or your energy retailer.

The Solar Sharer Offer in South Australia

SA households with a smart meter can opt in to a Solar Sharer Offer plan with free electricity between 12pm and 3pm every day, capped at 24 kWh in the window — the SA window is an hour later than NSW and QLD because of the state's solar generation profile. With more than 40% of SA homes on rooftop solar, midday wholesale prices are frequently near zero, which is exactly what makes the free window possible. Shift your dishwasher, washing machine and any EV charging into those three hours.

Why SA Prices Are the Highest — and What to Do

SA's bills sit at the top of the NEM for three structural reasons: SA Power Networks' high network charges, limited interconnection with the eastern states, and the cost of firming intermittent wind and solar generation. You cannot change the network component, but you can act on the retail component: compare plans against the DMO reference price at least once a year, consider time-of-use tariffs if you can shift usage, and look at the Home Battery Scheme if you have solar — batteries let you store midday generation for the expensive evening peak.

SA Concessions to Check

Eligible low-income households can claim the Energy Bill Concession through the SA Government's Concessions portal, and households with medical conditions or life-support equipment may qualify for additional concessions. Solar customers should also check current feed-in tariff offers — SA rates have fallen as the grid has saturated, so the best offer this year may not be the best next year.

Time-of-Use in SA: Worth the Switch?

SA retailers commonly offer time-of-use plans with cheaper overnight and midday rates and pricier evening peaks — and with the Solar Sharer Offer's free 12pm–3pm window, a ToU plan plus shifted usage can beat a flat rate by a wide margin. The test: if you can move 30% or more of your consumption out of the 4pm–9pm peak, a ToU plan is usually cheaper; if not, a flat-rate plan is safer. Check your last bill for your peak-hour usage share before choosing, and re-test every year as your habits and the tariff structure change.