Solar Quote Generator vs Proposal Software: What C&I and Agri Installers Actually Need

Somewhere in every solar company is a folder of quotes that were never answered. The system was right, the price was fair, and the client went quiet anyway. The usual diagnosis is price. The more common truth is that the client was handed a capital figure and left alone to work out what it meant for their monthly cash flow, and never got around to it.

That gap is the difference between a quote generator and proposal software, and it matters most in exactly the segments where deals are biggest: commercial and industrial, and agriculture.

What a quote generator does

A solar quote generator prices the hardware. Panels, inverters, batteries, mounting, cabling and labour go in; a bill of quantities and a capital price come out. Done well, it is fast, consistent and keeps margins honest across the sales team.

That is a real job, and nothing here argues against doing it properly. But a quote is a supplier document. It answers the question "what will this cost to build", which is the installer's question, not the client's.

What proposal software does

Proposal software answers the client's question, which is almost always some version of "what does this mean per month, against what I pay now".

That requires machinery a quoting tool does not have:

• Tariff modelling. The site's actual tariff, including time-of-use and seasonal rates and an escalation trajectory, because the saving is measured against it.
• Finance structures. Cash, asset finance, rent-to-own, subscription and PPA priced side by side against the same system, with the ownership and tax consequences visible. The structures are compared in solar finance structures compared.
• The tax position. For a business under asset finance, the Section 12B deduction materially changes the after-tax cost and belongs in the proposal, not in a follow-up email.
• A decision path. A live, branded view the client can accept, flowing into a finance application rather than a printed PDF that ends the conversation.

Why C&I and agri deals expose the difference

A homeowner might pay cash. A CFO almost never does. Commercial and industrial clients evaluate solar as a capital allocation decision: monthly cost against current spend, balance-sheet treatment, tax position. Hand that person a bare capital quote and you have asked them to build your proposal for you.

Agri deals add their own wrinkle: seasonal loads. Irrigation pumping, cold storage and processing do not consume like a factory, and a proposal that models a flat profile against a seasonal tariff is wrong in a way the farmer will spot. Proposal software that models the actual consumption pattern and the actual tariff is the difference between a credible number and a brochure.

For sites preparing for energy trading and wheeling, the tariff modelling requirement gets stricter still: time-of-use structures and escalation paths are the whole conversation, and the proposal engine has to model them honestly.

The wrong conclusion: two tools

The tempting fix is to keep the quoting tool and buy a proposal tool next to it. Now the BOQ lives in one system and the finance story in another, and someone retypes the first into the second for every deal. Every retype is a chance for the accepted proposal to disagree with the built system.

The structural fix is one flow: the quote or BOQ goes in, the finance proposal comes out, and acceptance carries into the application without re-keying. That is how ArkFlow's generator works, described in the automatic solar proposal generator: drop in the quote you already have, or a municipal bill and a pin, and every structure is priced side by side in minutes, issued as a versioned snapshot the client accepts online.

What happens after acceptance is the real test

A proposal tool that stops at a pretty PDF has only moved the dead end one document later. The client has picked a structure; now they need the finance.

On ArkFlow, acceptance flows into a guided application whose documents read themselves, prequalification with a credit scorecard and KYC screening, and a packaged submission to the client's bank, the installer's lenders or the ArkFlow panel. The proposal is the front door of an origination flow, which is what actually turns the folder of unanswered quotes into funded deals. The wider flow is described in what is inside an indicative proposal.

Sign up free and run one of those unanswered quotes through the generator. All proposal figures are indicative only and not a credit offer; the lender does the formal underwriting.

Frequently asked questions

Do I still need my quoting tool if I use proposal software?

If your quoting or BOQ process works, keep it and feed its output in. ArkFlow starts from a supplier quote or bill of quantities, so the proposal layer sits on top of your existing pricing rather than replacing it on day one.

What should a C&I solar proposal include?

A C&I proposal should show the monthly cost of each finance structure against the site's actual tariff, the ownership and balance-sheet consequences, and the indicative Section 12B tax position under asset finance. A capital price alone asks the CFO to do the analysis themselves.

Why does tariff modelling matter so much for agri?

Because agri loads are seasonal and many agri tariffs are time-of-use. A proposal that models a flat consumption profile against a seasonal tariff misstates the saving, and the error is largest exactly where the deal is largest.

Is a proposal the same as a finance application?

No. The proposal is the indicative, non-binding document the client decides on; the application is the underwritten process that follows acceptance. Good proposal software connects the two so acceptance flows into the application without re-keying.