🎯 The business: you program and commission the controllers, drives and HMIs that run factory lines, and you troubleshoot them when they stop. Reshored and expanding plants cannot hire enough controls engineers, so they rent them from small integrators at $125 to $200 an hour. A degree and two years on a plant floor is the usual starting point.
Manufacturers, food and beverage plants, water utilities and warehouses. Hourly service and emergency calls at $125 to $200 an hour; small projects (a new line, a machine retrofit, a SCADA upgrade) at $20,000 to $150,000; and the maintenance contracts that follow. One good plant relationship can carry a two-person firm for a year.
| Software licenses (Rockwell, Siemens, and the HMI and SCADA tools your market uses) | $5,000 to $15,000 |
| Laptop, meters, cables, a small panel-shop bench | $5,000 |
| LLC, professional and general liability insurance | $3,000 to $6,000 |
| Control System Integrators Association membership, a vendor partner program | $1,000 to $3,000 |
| All-in | ≈ $15,000 to $30,000, plus six months of living costs |
Start with the plants and former colleagues who already know your work; the first contract is almost always a referral. Become a registered integrator with one major PLC vendor; their distributors hand out leads. Offer emergency support with a stated response time. Write up each project as a one-page case study with a photo of the panel.
One engineer billing 1,200 hours a year at $150 is $180,000 before software, insurance and the unbilled hours of selling. A three-person firm with a panel shop and a few service contracts commonly reaches $800,000 to $1.5 million in revenue. Projects carry risk; service hours carry margin. The firms that last keep a floor of contract hours under every project.
No general license to integrate, but anything you wire beyond the panel needs a licensed electrician, and some states require a professional engineer’s stamp for certain control designs. UL 508A listing if you build panels. Safety standards for machine guarding and emergency stops are your liability on every job, so insurance that covers design errors matters.
Scope creep on a fixed-price project that eats the margin. A plant that calls at two in the morning for a problem that is not yours. A single customer that is 80 percent of revenue. Software versions that break old machines. The integrators who thrive write tight scopes, bill change orders, and never let one plant become the business.