Compare Commercial Solar Quotes

If you’re comparing commercial solar quotes, you’ve probably already noticed something:

Prices don’t line up. At all.

One quote might be $80,000. Another is $120,000 for what looks like the same system.

So what’s going on?

In this guide, we’ll break down:

• Why commercial solar quotes vary so much
• What you should actually be paying
• How to spot overpriced or underperforming systems

If you want to skip the guesswork, you can review your quote or organise a proper comparison before making a decision.

There are a number of reasons why quotes can differ significantly between providers.

1. System Design

Not all systems are designed the same way. Panel layout, inverter selection, and overall system efficiency all impact performance — and cost.

2. Equipment Quality

Tier 1 panels and premium inverters cost more upfront but deliver better long-term performance. Cheaper components can reduce initial cost but may affect reliability and output.

3. Installation Complexity

Roof type, access, switchboard upgrades, and grid connection requirements all influence pricing.

4. Provider Margins

Some companies price aggressively low to win the job. Others build in higher margins — sometimes without delivering additional value.

5. Incentives & Assumptions

Government incentives and energy savings projections can be calculated differently, making quotes appear more attractive than they actually are.

Most businesses don’t have the time to properly compare all of this — which is why many start by comparing solar quotes before going too far down the track.

Most businesses don’t choose the wrong system — they choose the wrong quote.

Here are some of the most common mistakes:

• Comparing price only (not performance)
• Overestimating energy savings
• Ignoring system design differences
• Choosing based on payback alone
• Not understanding what’s included

If you’re not 100% confident your quote stacks up, it’s worth taking a minute to have your quote reviewed before signing anything.

Government incentives can significantly reduce the upfront cost of a commercial solar system.

But they’re not always applied consistently across quotes.

We often see:

• Incentives overstated
• Savings inflated
• Payback periods that don’t reflect real usage

That’s why it’s important to look beyond headline numbers and understand the true cost.

If you’re unsure, you can get an accurate breakdown of your solar pricing and incentives here.

While every site is different, most commercial systems fall within typical pricing ranges based on standard installations and current market conditions:

• 30kW system: approx. $35k – $55k
• 100kW system: approx. $90k – $140k
• 250kW+ systems: from $200k+

These ranges can shift depending on factors like site complexity, equipment selection, and electrical upgrades — but they’re a useful benchmark when comparing quotes.

If your quote sits well outside these ranges, there’s usually a reason — and it’s worth taking a moment to check your quote properly before moving forward.

Choosing the right system size is just as important as choosing the right provider.

A system that’s too small won’t maximise savings.
Too large, and you may not see the return you expect.

Your system should be based on:

• Energy usage patterns
• Load profiles
• Future growth
• Available roof space

If you’re unsure what size system is right for your business, you can get a tailored system recommendation and quote comparison based on your usage.