One question comes up constantly from Australian indoor growers:
"How much does a hydroponic setup actually cost to run?"
With electricity prices continuing to rise across Victoria, New South Wales, Queensland and South Australia, more growers are paying close attention to hydroponic electricity costs, LED vs HPS power consumption, and how to build genuinely energy-efficient indoor grow rooms.
This guide breaks down the real-world running costs of a standard indoor hydroponic setup using current 2026 Australian electricity prices. We compare a traditional 600W HPS grow light against a modern LED equivalent and show exactly how much you can save each month by switching to efficient equipment.
For Victorian growers especially, reducing heat load and power draw has become one of the most practical reasons to upgrade indoor grow room equipment.
Average Electricity Prices Across Australia (2026)
Electricity costs vary significantly between states depending on supply infrastructure, renewable energy adoption, provider pricing, and peak vs off-peak tariff structures.
- Victoria (VIC): 26.8c per kWh
- Tasmania (TAS): 26.2c per kWh
- New South Wales (NSW): 28.5c per kWh
- Queensland (QLD): 27.2c per kWh
- Western Australia (WA): 28.9c per kWh
- South Australia (SA): 32.1c per kWh
South Australia continues to carry some of the highest residential electricity prices in the country, making energy-efficient hydroponic equipment even more important for SA growers.
Example Indoor Hydroponic Setup
This power usage breakdown is based on a common indoor grow tent configuration used across Australian hydroponic systems.
Equipment included:
- 150mm inline extraction fan
- 30W oscillating fan
- 600W HPS grow light (comparison baseline)
- Modern LED grow light (~320W)
Runtime is 18 hours per day on a standard vegetative growth cycle.
150mm Inline Fan - Monthly Power Usage
A standard 150mm inline fan typically draws around 70 watts.
Monthly consumption: 0.07 x 18 x 30 = 37.8 kWh per month
Inline fans are one of the most critical components in any indoor hydroponic setup. They:
- remove heat from the grow space
- stabilise humidity levels
- support healthy plant transpiration
- reduce mould and pathogen risk
- maintain consistent VPD throughout the canopy
Modern EC inline fans reduce power consumption significantly compared to older AC motor fans, making them a worthwhile upgrade for any grower focused on long-term running costs.
30W Oscillating Fan - Monthly Power Usage
Oscillating fans are inexpensive to run but still contribute to total grow room power consumption over time.
Monthly consumption: 0.03 x 18 x 30 = 16.2 kWh per month
Air movement is essential for:
- stem strength and structural development
- healthy transpiration rates
- preventing hot spots under grow lights
- keeping stagnant air from building up in enclosed grow tents
600W HPS Running Costs in Australia
Traditional 600W HPS systems remain popular for their proven flowering performance, but they consume substantially more electricity and generate far more heat than modern LED alternatives.
Most 600W HPS systems draw 640 to 660 watts from the wall once ballast losses are factored in. This example uses an average real draw of 650W.
Monthly HPS electricity usage: 0.65 x 18 x 30 = 351 kWh per month
LED Grow Light Running Costs in Australia
Modern full-spectrum LED grow lights now achieve comparable or better canopy penetration while using dramatically less electricity.
LED draw used in this comparison: 320W
Monthly LED electricity usage: 0.32 x 18 x 30 = 172.8 kWh per month
Lower power draw also means:
- lower heat output
- reduced extraction requirements
- lower cooling costs
- more stable room temperatures year-round
This is particularly important for indoor growers in Victoria and Tasmania managing summer heat and winter humidity swings.
Monthly Electricity Cost Comparison by State
600W HPS vs Modern LED Grow Light
Victoria: HPS $94.07 / LED $46.31 / Monthly saving $47.76
Tasmania: HPS $91.96 / LED $45.27 / Monthly saving $46.69
New South Wales: HPS $100.04 / LED $49.25 / Monthly saving $50.79
Queensland: HPS $95.47 / LED $47.00 / Monthly saving $48.47
Western Australia: HPS $101.44 / LED $49.94 / Monthly saving $51.50
South Australia: HPS $112.67 / LED $55.47 / Monthly saving $57.20
Total Indoor Hydroponic Running Costs Per Month
These estimates include the grow light, 150mm extraction fan, and oscillating fan combined.
Using a 600W HPS setup:
- Victoria: approximately $108 per month
- Tasmania: approximately $106 per month
- New South Wales: approximately $115 per month
- Queensland: approximately $110 per month
- Western Australia: approximately $117 per month
- South Australia: approximately $129 per month
Using a modern LED setup:
- Victoria: approximately $60 per month
- Tasmania: approximately $58 per month
- New South Wales: approximately $64 per month
- Queensland: approximately $61 per month
- Western Australia: approximately $65 per month
- South Australia: approximately $72 per month
Why LED Grow Lights Save Australian Growers Money
Modern LED grow lights have become one of the most impactful upgrades for indoor hydroponic systems. The benefits compound across the entire grow room:
- lower electricity draw reduces monthly bills directly
- lower heat output reduces extraction fan load
- reduced cooling requirements lower overall operating costs
- improved grams-per-watt efficiency improves yield economics
- more stable indoor environments reduce environmental control costs
For Victorian growers, lower heat output is particularly valuable. Summer temperatures can push sealed grow rooms well beyond comfortable ranges, and every watt of heat eliminated by efficient lighting is a watt your extraction system does not have to work to remove.
How To Reduce Hydroponic Electricity Bills
Run Grow Lights During Off-Peak Hours
Many Australian electricity providers offer cheaper overnight rates through Time of Use pricing and off-peak tariffs. Typical off-peak windows run from around 10pm to 7am or midnight to 6am depending on your provider and state.
Running lights overnight:
- reduces total electricity costs
- lowers daytime heat build-up
- improves cooling efficiency
- reduces temperature spikes during the hottest parts of the day
This is why many experienced Australian growers run lights on at night and off during the day, especially through summer.
Upgrade to EC Inline Fans
EC fans are:
- quieter than AC motor fans
- more energy efficient
- fully speed controllable
- lower wattage at equivalent airflow
Over a full growing season, the difference in power consumption adds up meaningfully.
Match Grow Tent Size Correctly
Oversized grow tents waste light output, extraction power, and environmental control efficiency. A properly matched tent and light combination is one of the simplest ways to improve overall system efficiency.
Popular efficient grow tent sizes for Australian home growers include 1.2x1.2m, 2x2m, and 4x4m configurations, as well as compact setups suited to apartment and balcony growing.
Reduce Heat Build-Up
Excess heat forces extraction fans, air conditioners, and dehumidifiers to work harder. Lower heat output from efficient grow lights means:
- lower overall hydroponic running costs
- more stable VPD across the grow cycle
- better environmental control without additional equipment
Solar Power and Indoor Hydroponics
A growing number of Australian hydroponic growers are pairing indoor systems with rooftop solar, battery storage, and off-peak charging strategies to reduce electricity costs and peak-hour usage.
As energy prices continue fluctuating across Australia, energy-efficient hydroponic systems and solar integration are becoming increasingly practical for home growers looking to reduce long-term operating expenses.
Is HPS Still Worth It for Australian Growers?
Despite higher running costs, HPS grow lights remain a legitimate choice for certain growers and situations. Understanding when HPS makes sense helps you choose the right setup for your budget and growing goals.
Lower Upfront Cost
A complete 600W HPS kit — including digital ballast, reflector, and globe — typically costs $150 to $300 AUD. A comparable quality LED grow light starts at $600 and can exceed $1,500 for premium brands. For a grower on a tight starting budget, HPS gets you into a productive grow room for significantly less upfront investment.
Heat as an Asset in Winter
In colder states like Victoria and Tasmania, HPS heat output can actually work in your favour during winter months. The warmth generated by an HPS system can reduce or eliminate the need for a separate grow room heater, partially offsetting the higher electricity cost during the coldest months of the year.
Proven Flowering Performance
HPS has decades of documented results in the red and orange spectrum that drives flowering and fruiting. Many experienced growers have dialled in their HPS feeding schedules, environmental settings, and training techniques over years of grows. Switching to LED requires recalibrating those variables, which some growers prefer to avoid.
Simple to Maintain and Repair
HPS systems are mechanically straightforward. Replacement globes cost $30 to $80 AUD and are stocked at most Australian hydroponic stores. Digital ballasts are widely available and easy to swap out. There are no complex LED drivers, diode arrays, or proprietary components to fail or replace.
Flexible Power Output
Quality digital ballasts allow you to run at 250W, 400W, or 600W from the same unit. This gives growers flexibility to reduce power draw during vegetative growth and ramp up for flowering without purchasing additional equipment.
Replacement Parts Available Nationwide
HPS globes, ballasts, and reflectors are stocked across Australia. For growers in regional areas where express shipping is less reliable, being able to walk into a local hydro store and grab a replacement globe the same day is a genuine practical advantage.
For growers weighing up HPS vs LED, the honest answer is that both technologies have a place depending on your budget, climate, and growing goals. If upfront cost is the primary constraint, HPS remains a capable and proven starting point. If long-term running costs and environmental control are the priority, modern LED is the stronger investment.
Browse our full range of LED and HPS grow lights at Apex Grow →
Is Hydroponics Expensive To Run in Australia?
Modern hydroponic systems are substantially cheaper to operate than older indoor growing setups.
Average Monthly Running Cost - Modern LED Setup (Australia)
Based on the six states above, the national average for a standard indoor hydroponic setup running a modern 320W LED grow light, 150mm inline fan, and oscillating fan is approximately:
- Average monthly cost: $61 per month
- Average daily cost: around $2.05 per day
Average Monthly Running Cost - 600W HPS Setup (Australia)
Based on the six states above, the national average for the same indoor hydroponic setup running a traditional 600W HPS grow light is approximately:
- Average monthly cost: $111 per month
- Average daily cost: around $3.70 per day
Average monthly saving by switching to LED: approximately $50 per month
That works out to around $600 per year in electricity savings from the grow light upgrade alone, before any additional cooling or extraction savings are factored in.
For many growers, upgrading to efficient hydroponic lighting pays for itself through reduced electricity bills alone, often within a single growing season.
Final Thoughts
Electricity efficiency has become one of the most important factors in modern indoor hydroponic growing across Australia.
For growers in Victoria, NSW, Queensland and Tasmania, efficient indoor grow room equipment can dramatically reduce:
- monthly electricity costs
- cooling requirements
- environmental instability
- overall grow room heat load
Modern LED grow lights paired with EC extraction systems now offer the best balance of yield, environmental control, low running costs, and long-term growing efficiency.
As Australian electricity prices continue to evolve, energy-efficient hydroponic systems are rapidly becoming the standard for serious indoor growers, not just an upgrade, but a baseline expectation.
Disclaimer: All electricity cost figures in this guide are estimates only, based on average state tariffs at the time of publication. Electricity prices vary by provider, tariff type, and usage patterns, and are subject to change. Always check your current electricity bill or provider for accurate rates.