How to Start a Solar Installation Business as a Sole Trader

Solar installation combines electrical work with genuine regulatory complexity. Getting the accreditation and process right early is what separates a credible installer from someone just bolting panels to a roof.

MCS accreditation is the foundation of the business, not an add-on

Microgeneration Certification Scheme accreditation is what allows your customers to actually claim Smart Export Guarantee payments for electricity they export back to the grid. Without it, you can still fit panels, but you're selling a materially worse product than a certified competitor. Get accredited before taking on your first paid installation.

Always survey before you quote a firm price

Roof orientation, shading, and structural condition all affect both feasibility and cost, and none of it can be reliably assessed from a phone call. Price the survey as its own step and credit it against the job if the customer proceeds. That is standard practice and protects you from giving away technical assessment work for free.

Understand DNO notification before your first grid-connected install

Connecting a system to the grid legally requires notifying the Distribution Network Operator, and some installations need approval before work can even start. This is a genuine scheduling constraint, not paperwork you can quietly skip.

Itemise scaffolding separately from the system cost

Scaffolding is a real, sometimes substantial expense unrelated to the panels themselves. Bundle it into one "solar system" price and your quotes get hard to compare against competitors, and it hides a cost that's genuinely variable by property.

Learn enough about battery storage to advise confidently

Many customers ask about adding battery storage alongside panels, even if you subcontract that part of the installation. Explain the basics credibly instead of deferring the whole question, and you stay positioned as the primary point of contact for the project.

Build weather buffer into your booking calendar

Roof work depends on dry, safe conditions, and a booking calendar with no slack for weather delays quickly cascades into missed dates across every job behind it. Build realistic buffer time in from the start, and you protect your reputation for reliability.

Set honest expectations about seasonal generation

A customer's solar generation, and the export income that follows, will vary substantially between summer and winter. A new installer who quotes an optimistic year-round average without explaining that seasonal swing sets up a disappointed customer come January. Be upfront about realistic winter output, and frame the investment around annual return rather than any single month. It builds far more trust than an inflated headline number that doesn't hold up once the customer is actually living with the system.