Quotation Software for Solar Equipment Suppliers

Solar quoting is a moving target

A solar system quote isn’t a price on a box. It’s a multi-component bill of materials — panels, inverter, battery, mounting, cabling — where every component affects every other component, prices change weekly, government incentives recalculate annually, and the customer is comparing your quote against four others that all use different product mixes and different formats.

Australia alone has over 4 million rooftop solar installations. The market installed 1.6 GW of new rooftop capacity in H2 2024 alone. And yet 610+ solar companies have gone into liquidation since 2011, with 600,000-700,000 systems now “orphaned” — the installer company no longer exists, and the warranty is worthless.

The margins are razor-thin. A typical residential installation leaves $300-800 of gross margin. A single pricing error — wrong STC count, missed electrical upgrade, underestimated labor — wipes out the profit on the job.

In this environment, your quote isn’t just a price. It’s a trust document. A professional, accurate, clearly-structured quotation is often the difference between winning the job and losing it to a competitor whose price is higher but whose quote looks like they know what they’re doing.

The STC calculation trap

If you’re quoting solar in Australia, you’re dealing with Small-scale Technology Certificates (STCs) on every single residential and small commercial quote. The formula sounds simple: Zone Rating × Deeming Period × System Size. The reality is anything but.

Zone Rating varies by postcode — an installer in Darwin (Zone 1) generates more STCs than one in Hobart (Zone 4), for the same system. Deeming Period dropped from 6 years to 5 years on January 1, 2026 — an instant 16.6% reduction in the rebate multiplier. STC spot price fluctuates on an open market.

When STCs reduce, quotes quietly rise. No announcement, no separate line item. Just a higher number. Customers who’ve done their research notice. Customers who haven’t feel blindsided when they compare an October quote to a January quote for the same system.

A miscalculation of even 5-10 certificates at $38/STC is $190-$380 of error. On a $300-800 margin job, that’s anywhere from a quarter to all of your profit.

In Quotejam, your product catalog carries the system specifications that drive the STC calculation. When your sales team quotes a 6.6 kW system, the specifications — panel wattage, panel count, total capacity — are captured in the quote. The quote document shows exactly what was quoted, at what specifications, at what price. If a customer asks “why is my quote $400 more than last month?”, you have a documented answer, not a verbal explanation.

The CEC approved products minefield

The Clean Energy Council maintains approved product lists for panels, inverters, and batteries. Over 1,500 panel models. Over 1,800 inverter models. Products must be CEC-approved at time of installation, not at time of quoting.

This creates real risk: you quote a system today, the panel gets delisted next month, and the installation scheduled for next quarter is now invalid for STC purposes. In one documented incident, hundreds of solar panels were removed from the CEC list after compliance audits — installers who had quoted and ordered those products had to re-quote and re-source at short notice.

Your product catalog in Quotejam captures this. Each product carries its specifications, including CEC approval status, certification references, and model identifiers. When you update a product’s status (delisted, superseded, back-ordered), every team member sees it immediately — before they quote it on a new job.

The multi-component bundling challenge

A residential solar quote typically includes 6-8 categories of items:

Component	Complexity
Solar panels	Panel count depends on wattage per panel (13-18 panels for 6.6 kW)
Inverter	Must be sized to array; string vs micro vs hybrid changes the quote
Battery storage	Optional but growing fast (74,582 residential units in 2024, +61%)
Mounting system	Varies by roof type — tile hooks, metal deck clamps, flat-roof tilt frames
Cabling and isolators	DC cabling, AC cabling, conduit, DC isolator, AC isolator
Monitoring	Included with some inverters, separate hardware for others
Electrical upgrades	Switchboard upgrade, additional circuits — sometimes discovered only on site
Grid connection	DNSP application fees, varies from $0 to $1,500+ depending on system size and network

Change one component and the cascade begins. Customer wants two more panels? Inverter sizing needs re-evaluation. Different inverter model? Might need different mounting rails. Adding a battery? Completely different inverter (hybrid), different cabling, different switchboard requirements.

Quotejam’s product sets handle this elegantly. Define your standard system packages — “6.6 kW Trina + Sungrow Package”, “10 kW Commercial + Battery” — as bundles. Each bundle shows the component breakdown and combined pricing. Add a package to a quote in one click. Need to swap the inverter? Edit the line item, and the bundle adjusts.

The grid connection postcode lottery

Australia has approximately 20 major Distribution Network Service Providers (DNSPs), and each has its own rules on maximum system size, export limits, and connection process.

A 10 kW system in one suburb is a simple $0 standard connection. The same system in the next suburb — different DNSP territory — requires a “negotiated connection” that takes 6-8 weeks and costs $1,500+ in engineering fees. SA Power Networks requires all new installations to have “flexible export” capability. Some feeders in high-solar-penetration areas require zero export.

You can’t quote accurately without knowing the specific address. And you can’t assume last month’s rules still apply — Victoria removed minimum feed-in tariff requirements from July 2025, dropping the projected minimum FiT from 3.3c/kWh to near zero, fundamentally changing the financial case for solar in that state.

This variability is why specifications on quotes matter. When your quote documents the exact system size, inverter model, and export configuration, you have a record of what was proposed. If the DNSP rejects the connection application because the inverter doesn’t support flexible export, you know whether that was a quoting error or a rule change.

Price volatility: the week-to-week reality

Solar distributors update their pricing frequently — weekly in volatile periods. Panel prices dropped another 12% in 2024 as Chinese manufacturers hit massive overcapacity. Battery prices fell 11-16%.

For installers, this creates a cruel dynamic. Your quote from three weeks ago was based on distributor prices that have since changed. If prices went down, the customer may have found a cheaper quote from someone using the new pricing. If prices went up, your margin just shrank.

Standard quote validity in Australian solar is 7-30 days. Some businesses hold to 14 days. Every day beyond that, the installer is personally carrying the currency and commodity risk on a $6,000-$15,000 system.

Quotejam tracks quote validity automatically. Every quote carries its validity period. When a customer comes back to accept a 45-day-old quote, your team sees instantly that it’s expired — and can re-quote at current pricing rather than absorbing the difference.

The residential vs. commercial divide

Residential solar is a volume game — commoditized, price-sensitive, thin margins. Commercial solar (10-100 kW) is where margins are better but quoting complexity is higher. Commercial installation revenue grew 13% in 2024 to a record $1.1 billion in Australia.

Commercial quotes need load profiling, tariff analysis, structural assessment, and consideration of network demand charges. They are engineering documents, not product lists. And the deal cycle is 3-12 months — meaning multiple quote revisions as the scope changes.

Quotejam handles both. Residential quotes are fast — pick a system package, enter the customer details, send. Commercial quotes use the full feature set — detailed line items with equipment tags, spec snapshots, revision tracking, and approval workflows for large discounts.

The trust problem

When 31% of Australia’s solar systems are orphaned because the installer no longer exists, customers ask hard questions. “Will you be here in five years?” A handwritten quote or a generic email with prices doesn’t answer that question.

A professional quotation — branded, detailed, with clear specifications, warranty terms, payment conditions, and a customer portal where they can review and acknowledge — signals permanence. It says: “We’re a business that invests in doing things properly.”

It won’t save a bad installation. But it won’t lose a good deal, either.

What solar suppliers get with Quotejam

• Component catalog — Panels, inverters, batteries, mounting, and accessories organized with structured specifications (wattage, capacity, CEC approval, compatibility)
• System packages — Pre-configured bundles for common system sizes. Add a complete solar system to a quote in one click
• Spec snapshots — Every quote captures the exact specifications at quote time. What was quoted is documented, not assumed
• Quote validity tracking — Automatic expiry dates. No more honoring three-week-old prices when panels have moved 8%
• Revision management — Commercial projects go through 3-5 revisions. Track every version, see what changed between them
• Customer portal — Customers review the quote via a secure link. They see the system breakdown, acknowledge receipt, and can leave questions as comments
• Professional PDFs — Your company branding, structured component lists, specification details. Not a spreadsheet

Start quoting in minutes

Import your product catalog from Excel. Define your standard system packages. Quote your first job today.

Free for up to 25 products and 15 customers. Pro starts at $19/month for unlimited everything.

See also: Product Bundling for Equipment Quotations, Quote Lifecycle Tracking, and How to Choose Quotation Software.