Every industrial solar conversation eventually arrives at the same question: who owns the asset? The answer isn't a technical one, it's a balance-sheet decision, and it's usually made before a single panel is specified. Get it wrong and you either tie up capital a growing business needed elsewhere, or hand away savings you could have kept.
The two poles
Under CAPEX, you invest in and fully own the plant. It's the route that lets you capture the long-term savings directly, it brings depreciation and tax treatment into the picture, and you keep control of the asset, but it uses your capital and your balance sheet.
Under OPEX / RESCO, the plant is financed and operated by a third party and you pay for the power it supplies under an agreed commercial framework, subject to project bankability and contract terms. Upfront investment is low or zero, and day-to-day operation sits with the provider, but you don't capture the full economics an owned asset would deliver.
What the numbers actually say
Payback, IRR and cash-flow outcomes depend on system size, tariff, finance terms, tax position and operating cost, which is why we model them for each site rather than quote a single figure. Depreciation and tax impact can shift the picture materially for a business with the profit to absorb it, and tariff escalation matters more the longer the horizon. Whichever structure you choose, the difference comes down to who carries the investment, who captures the savings and how that shows up on your books.
The routes in between
CAPEX and OPEX aren't the only two options. A lease-based structure gives you positive cash flow from day one on fixed payments, with ownership transferring to you at the end of the tenure, a middle path for businesses that want eventual ownership without the full upfront outlay. Group-captive and open-access structures go further still, letting you source power off-site across multiple facilities under a shared equity or wheeling arrangement, useful where roof space is the constraint rather than capital.
How we help clients decide
We don't lead with a structure, we lead with a financial model. Every Polaris engagement starts with your load profile and site conditions, then a techno-commercial comparison covering IRR, payback, depreciation, tax impact and cash flow for each route that fits your books. The structure follows the numbers, not the other way round, and the same team that builds the case stays accountable for it through commissioning and into long-term operation.