20kW Solar System

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Commercial-Grade Energy Efficiency for Business Premises

As energy costs continue to rise, Australian businesses are turning to renewable energy to cut expenses and boost operational efficiency. A 20kW solar system is a powerful solution for organisations looking to significantly reduce daytime electricity usage. Designed for medium-sized commercial operations, offices, and retail spaces, this system delivers reliable performance and an excellent return on investment.

At 3P Solar, we offer expertly designed and professionally installed 20kW systems built to support your business growth and sustainability goals.

A building with solar panels on its roof, framed by a city skyline, representing the integration of green technology in cities A construction worker in an orange vest and hard hat is working diligently on solar panel installation

Who Should Consider a
20kW solar panel system?

A building with solar panels on its roof, framed by a city skyline, representing the integration of green technology in cities A construction worker in an orange vest and hard hat is working diligently on solar panel installation

20kW solar panel system is ideal for small to mid-scale businesses with consistent daytime operations and energy usage. If you’re running a busy office, hospitality venue, medical practice, or small manufacturing unit, this system can meet a large portion of your power needs—especially when paired with energy-efficient practices.

This capacity is particularly well-suited for properties with single or three-phase power and is commonly used in:

  • Offices and co-working spaces
  • Warehouses and distribution centres
  • Restaurants and cafes
  • Medical and dental clinics
  • Retail outlets

If you’re evaluating solar solutions for your business, this size strikes a strong balance between cost-effectiveness and power output.

Commerical Solar Packages

20kW

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46 x 440W
Tier 1 Solar Panels

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1 x 20kW
Power Inverter

  • Designed for small businesses
  • Cut down operating energy costs
  • Solar rebates & tax incentives available

30kW

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69 x 440W
Tier 1 Solar Panels

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1 x 30kW
Power Inverter

  • Designed for large corporate
  • Cut down operating energy costs
  • Solar rebates & tax incentives available

50kW

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114 x 440W
Tier 1 Solar Panels

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30kW + 20kw
Power Inverter

  • Designed for large business
  • Cut down operating energy costs
  • Solar rebates & tax incentives available

How Much Power Does a 20kW
Solar Panel System Generate?

Solar panel on a roof with a vibrant sunset casting warm colour in the background

Depending on your geographic location, system orientation, and weather conditions, a 20kW solar panel system can produce between 75 to 90 kWh per day. This level of output is sufficient to cover high daytime energy usage, reducing grid reliance during peak hours and enabling you to benefit from solar feed-in tariffs when excess energy is exported.

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Solar panel on a roof with a vibrant sunset casting warm colour in the background

What’s Included in a
20kW Solar Setup?

At 3P Solar, we customise each system based on your site and business requirements. A typical package includes:

All components are sourced from trusted, Tier 1 manufacturers to ensure durability, efficiency, and long-term reliability.

1
45 to 52 premium solar panels
2
Commercial-grade inverter (20kW capacity or equivalent)
3
Mounting hardware for your roof type
4
Optional smart monitoring tools
5
Accredited installation and grid connection
6
Compatibility with battery integration

Why Consider a 20kW Solar Battery Solution?

A solar panel located on the top of a structure with solar battery, illustrating the adoption of solar technology

Pairing your solar setup with battery storage unlocks added value, especially for businesses with after-hours operations. A 20kW solar battery system allows you to store daytime-generated power and use it in the evening, during peak demand times, or in case of grid outages.

A solar panel located on the top of a structure with solar battery, illustrating the adoption of solar technology

Key advantages of a 20kW solar system with battery storage include:

  • Enhanced control over energy consumption
  • Reduced peak demand charges
  • Backup power availability for critical systems
  • Increased overall system efficiency

Battery storage is particularly useful in regions with low feed-in tariffs or in industries where continuous uptime is critical.

Wondering if a 20kW
system suits your energy use?

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Are 20kW solar panel systems Suitable for Commercial Properties?

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Absolutely. This system size is frequently chosen for solar panels for office buildings and other commercial locations that operate during daylight hours. The daily generation capacity of a 20kW setup aligns perfectly with business hours, enabling you to maximise the use of clean, low-cost energy on-site.

Whether you’re fitting out a new location or retrofitting solar panels for commercial premises, our engineers will design a system that fits your goals, space, and energy profile.

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Our Process: Commercial Solar Made Simple

Partnering with 3P Solar means working with an experienced team that handles everything from consultation to commissioning. Our process includes:

Energy Usage Assessment

We review your electricity bills, building layout, and future growth projections.

System Design & Proposal

You receive a tailored solution and clear breakdown of expected savings.

Approvals & Permits

Our team manages grid applications and compliance documentation.

Installation

Conducted by licensed commercial solar specialists in line with Australian standards.

Post-Installation Monitoring

Ongoing performance analysis and support to ensure consistent output.

We ensure that every project meets Australian standards and is designed for optimal, long-term performance.

Our Happy Customers

FAQs

20kW solar panel system

A typical 20kW system includes 45 to 52 panels, depending on the wattage of each panel (usually between 380W–450W). The final count depends on your available roof space and panel choice.

Yes. A 20kW solar panel system is specifically designed for offices and small to medium commercial operations. It efficiently powers daily operations, reduces grid dependency, and offers excellent financial and environmental returns.

Not sure if 20kW is right for your property?
Get advice from our team now.

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