NetSuite vs Sage Intacct for Solar and Energy EPC Firms

An EPC contract typically bills against defined milestones, permitting, procurement, mechanical completion, interconnection, but the underlying equipment often has to be purchased and paid for well before the milestone that triggers its billing. That mismatch means your accounts payable can run well ahead of your accounts receivable on any given project, and if the accounting system cannot show you that gap project by project, you find out about a cash crunch only when the bank balance actually drops. Engineering and construction receivables run around 100.4 days industry wide¹, and an EPC project with interconnection delays can push well past that norm.

NetSuite pairs project accounting with real inventory and purchasing control, which matters for a contractor holding significant panel and inverter inventory between procurement and install. Its project management tools can track milestone billing against a schedule of values, and teams that want procurement, inventory and project accounting in one system tend to find NetSuite's integrated approach faster to stand up than stitching together separate tools. That integration also means a purchasing manager and a project accountant are looking at the same underlying data, which cuts down on the kind of disagreement that happens when procurement and accounting each keep their own separate spreadsheet of committed cost.

Once you are structuring individual projects or portfolios through separate legal entities for tax equity partnerships or project financing, Sage Intacct's multi-entity consolidation tends to handle that structure more cleanly, since each project entity can roll up to a parent without a manual consolidation exercise every close. Engineering and construction payables run around 36 days industry wide², a reasonable benchmark for negotiating equipment vendor terms as your project entity count grows and vendor relationships need to support several concurrent projects at once.

A contractor running a small number of projects under one entity, without complex tax equity or financing structures, can track milestone billing and basic job costing in QuickBooks Enterprise for a while. It becomes the wrong fit once you are running multiple project entities that need to consolidate, or the volume of equipment inventory sitting between procurement and install grows large enough that manual tracking creates real financial risk.

Say a project's mechanical completion milestone was scheduled for March, worth a meaningful draw against a construction loan, but the utility's interconnection approval slips to July. The panels and inverters are already paid for and sitting in inventory, the loan draw calendar does not move on its own, and the crew assigned to the next project may need to shift. A system with real project accounting shows you that gap the moment the delay is known, not the month the milestone finally bills, which gives you time to manage financing and crew scheduling around the delay instead of discovering the cash impact after the fact.

Ask whether your current process can produce a single view of committed cost, actual cost and remaining budget for every active project, updated within days of a change, not reconstructed at quarter end. If the honest answer is no, that gap is the real project, and it exists regardless of which platform you choose. Confirm in a demo that either system can track equipment inventory against a specific project from procurement through install, since that link is often the piece that gets bolted on as an afterthought rather than built in from the start.

Confirm these capabilities in a demo:

• One view of committed cost, actual cost and remaining budget for every active project, updated within days of a change.
• Equipment inventory tied to a specific project or job while it sits in the warehouse.
• Loan draw schedules and customer milestone billing shown side by side for each project.
• Multi-entity reporting that rolls up cleanly if projects sit in separate financing or tax equity entities.