Solar + home upgrades, done right
Solar guaranteed to work.
Top 20 US solar company. 25-year warranties. Whole-home battery backup. Built and installed by a partner with 15 years in the field.
Private consultation
Tell us what you want to upgrade.
Free consultation for solar, roofing, windows, doors, EV charging, HVAC, generators, and custom home projects. No pressure to sign on the spot.
- In-home walkthrough for whatever you need upgraded
- Written quote with the options and guarantees included
- Roofing, gutters, insulation, painting, landscaping, and more
Home improvement
Solar, roofing, windows, doors, and the work around them.
Solar is our specialty. Home improvement is the full picture. Great Lakes Solar helps homeowners improve the whole property, from the system on the roof to the roof itself, windows, doors, EV charging, tree work, and other upgrades that protect your investment.
Solar
Roof-mount, ground-mount, off-grid, and whole-home battery backup — all backed by a 95% production guarantee and 25-year coverage.
Learn moreRoofing
A solid roof is the foundation of a solid solar install. We handle full replacements and repairs.
Learn moreWindows
Energy-efficient windows from Alside Mezzo and other trusted brands.
Learn moreDoors
Entry, patio, and storm doors that match the look and tightness your home deserves.
Learn moreEV Chargers
Level 2 home charging installed clean — paired with solar or stand-alone.
Learn moreTree Services
Trimming and removal so panels see the sun and your roof stays protected.
Learn moreDon’t see your project listed?
Tell us what you want to improve. We handle a wide range of home improvement work, and if your project needs a specialized path, we’ll help you figure out the right next step.
- Gutters & downspouts
- HVAC
- Generators
- Foam insulation
- Siding
- Interior & exterior painting
- Air purification
- Landscaping
- Concrete
- Drywall
- Smart thermostats
- Carports & custom construction
Certified & credentialed
Certified partners. Best in the game.
Guarantees, not maybes
Solar that has to perform. Proof in writing.
The industry runs on estimates and disclaimers. We work the other way: concrete numbers, long warranties, and a system designed to keep producing decades after install day.
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95% Power Production Guarantee
Your system actually produces what we project — or we make it right. The production guarantee is in writing, every time.
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25-Year Warranties
Equipment and workmanship covered for a quarter-century. Panels guaranteed at 84.7% efficiency or better after 30 years.
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Whole-Home Battery Backup
Power outages, no more. Pair your panels with storage and keep the lights on when the grid doesn’t.
Solar without the upfront hit
Go solar with no money down.
Our program does not require one penny out of pocket. Instead of adding a new bill to your budget, we help redirect what you are already spending with the utility company and use it to move your home to solar.
$0
Most homeowners start by replacing what they already pay.
In many cases, the solar payment is less than the current utility bill. Great Lakes Solar walks you through the numbers before you decide.
Homeowner story
Promises in writing. Performance on the roof.
“Long-term manufacturer warranties. Performance is everything. Not only do you have a labor warranty with $0 deductible, but if our system doesn’t produce what we say, we will cover the difference in your utility cost or add a panel or two for free.”
Process
Your guided route from curiosity to quote.
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Step 01: Discovery
Share your address, energy priorities, and solar questions.
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Step 02: Design direction
Review system fit, roof considerations, and quote-ready details.
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Step 03: Installation coordination
Move forward with clear communication and organized next steps.
Energy independence
Say goodbye to the utility company.
Whole-home battery backup keeps your lights on when the grid drops. Off-grid systems let you leave the utility behind entirely. Roof-mount or ground-mount — we design the setup that fits your property.
- Whole-home battery backup
- Off-grid systems
- Roof-mount or ground-mount
- Outage-ready in any season
Homeowner reviews
Real homes. Real results. Real receipts.
Featured testimonial
Hear it directly from a Great Lakes Solar homeowner.
A real client story gives new homeowners a better sense of the process, the team, and what it feels like after the system is installed.
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“The team explained everything in plain language and stuck to what they said the system would do. No surprises, no pressure — just a clean install that works.”
M. Anderson
Crown Point, IN
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“We added a whole-home battery alongside the panels. When the grid went down last winter, we never noticed. Worth every penny.”
J. & L. Carter
Valparaiso, IN
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“I priced solar with three companies. Great Lakes was the only one that put the production guarantee and 25-year coverage in writing without me asking.”
R. Patel
Merrillville, IN
Referral reward
Refer a friend
Send a neighbor. Get $1,000.
When someone you refer installs a system with Great Lakes Solar, we send you $1,000 — no cap, no expiration. Just our way of saying thanks for spreading the word.
Refer a FriendFAQs
Questions worth asking.
Does going solar require any money down?
No! Our program does not require one penny out of pocket. And this is not an additional bill added to your budget. We redirect what you are already spending with your utility company and use that to go solar. Most times the solar payment is less than what you are already paying to your utility company.
What does the 95% Power Production Guarantee actually mean?
If your system produces less than 95% of what we projected for the year, we make it right — service, equipment, or compensation. The number is in your contract, not buried in fine print.
What’s covered under the 25-year warranty?
Equipment and workmanship for 25 years, with panels guaranteed at 84.7% efficiency or better after 30. That covers the panels themselves, the inverters, and the labor we put on your roof.
Do you handle whole-home backup and off-grid setups?
Yes. We design battery backup systems that keep the whole house powered during outages, and full off-grid systems for homeowners ready to leave the utility behind entirely.
What other home services do you offer?
Roofing, windows, doors, EV charger installation, and tree trimming and removal. One licensed contractor for the upgrades that surround a solar install — see all services.