Not all installers are equal. Here's what to check before you buy.
Insist on tier-1 panels and a reputable inverter brand, plus a strong mounting structure built for Pakistan's heat, dust and wind — cheap structures fail fast and void savings.
Make sure the company handles the DISCO net-metering application, provides real after-sales service, and offers monitoring so you can track generation in real time.
Ask for a written savings estimate, clear warranty terms (panels typically 25 years, inverter 5–10 years) and a maintenance plan.
Beware quotes that look too cheap — they often cut corners on structure, cabling or panel quality, which costs you far more over the system's life.