Certasun

4.8 (315 reviews)

| Buffalo Grove, IL | Solar

Certasun is a solar supplier and service provider based in Buffalo Grove, IL, installing residential and commercial solar energy systems.

At a Glance

Category: Solar
Location: Buffalo Grove, IL
Rating: 4.8/5 (315 reviews)
Phone: +13126380800
Services: Supplier, Point Of Interest, Service

About Certasun

Certasun is a solar contractor operating in Buffalo Grove, IL. With a 4.8/5 rating from 315 Google reviews, the company has established a presence in the local solar industry.

Certasun specializes in the installation of solar energy systems for residential properties. This includes solar panel array design, permitting, and installation services. Their work aims to equip homeowners with solar electricity generation capabilities.

When considering Certasun for a solar project, homeowners may inquire about the types of solar panels and inverters they install, their warranty policies, and their experience with local permitting processes in Buffalo Grove. Obtaining multiple quotes and comparing equipment specifications, warranty terms, and total system costs is recommended before making a decision.

Services

Supplier

Point Of Interest

Service

Establishment

Hours

Friday 9:00-17:00 Monday 9:00-17:00 Tuesday 9:00-17:00 Thursday 9:00-17:00 Wednesday 9:00-17:00

Business information verified via Google Business Profile. Last updated: 2026.

Last verified: May 2026

Contact

1582 Barclay Boulevard

Buffalo Grove, IL 60089

(312) 638-0800

Visit Website

Map

How to evaluate Certasun

Before hiring Certasun for solar work in Buffalo Grove, take a few minutes to verify their qualifications and confirm they are the right fit for your project. The right solar for one homeowner may not be the right fit for another, so do the diligence up front.

Verify licensing and insurance

Confirm that Certasun carries an active IL contractor license appropriate for the scope of work, plus general liability and workers’ compensation coverage. Ask for the license number and look it up on the state board website. A solar that hesitates to share these details is a red flag, regardless of how favorable their reviews look.

Get a written, itemized quote

Request a detailed written estimate that lists materials, labor, permit fees, timeline, and payment schedule. Itemized quotes make it possible to compare Certasun side-by-side with other solar options in Buffalo Grove, and they protect you from scope creep once the work begins.

Ask about project experience

Ask Certasun how many projects similar to yours they have completed in the last 12 months, whether they will be the primary on-site team or are subcontracting, and how they handle change orders. Request two or three local customer references and actually call them — reviews on Google are useful but a five-minute conversation reveals much more about how a solar actually shows up.