Terawatt Solar
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Ontario’s solar experts with 10+ years experience.
“💡 We haven’t paid a hydro bill over $38 in the last year and a half.”
That’s the kind of result that makes installing solar panels worth it.
After installing solar panels with Terawatt Solar two years ago, this homeowner has been generating enough clean energy to power their home year-round. Even through a harsh Ontario winter, the solar credits earned during sunny summer months carried them through, keeping electricity costs incredibly low.
☀️ Lower hydro bills
☀️ Bank excess energy credits
☀️ Protection from rising electricity costs
☀️ Clean, renewable energy for your home
“Terawatt Solar was absolutely perfect. They led us by the hand from the beginning and did a fabulous job.”
Thinking about solar for your home? See what your roof could save you.
📍 Serving homeowners across Ontario
06/05/2026
Did you know that solar panels are an eligible upgrade under the Guelph Greener Homes Program?
For homeowners in Guelph considering solar energy, the program offers up to $50,000 in interest-free financing for eligible home energy improvements, including solar photovoltaic (PV) systems. By spreading the cost over time, homeowners can make the switch to renewable energy without taking on a traditional high-interest loan.
Installing solar panels can help offset your home's electricity consumption, reduce long-term energy costs, and protect against future utility rate increases. With Ontario's net metering program, excess electricity generated during sunny periods can be credited to your account and used to offset future electricity usage.
To qualify, homeowners must receive program approval before starting their project and complete the required energy assessments. Eligibility requirements and program availability apply.
If you've been thinking about installing solar panels in Guelph, this program is another reason to explore whether solar makes sense for your home.
06/03/2026
Thank you, Eitan, for trusting Terawatt Solar with your solar installation project!
We’re proud to help homeowners across Ontario make the switch to clean, renewable energy with honest guidance, professional solar panel installations, and long-term customer support. Hearing that our team delivered a transparent and high-quality experience means everything to us.
If you’ve been considering solar panels for your home, now is a great time to explore your options and learn how solar energy can help reduce long-term electricity costs.
Ready to go solar in Ontario?
Contact Terawatt Solar today.
Click here to claim your Sponsored Listing.
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Address
7030 Woodbine Avenue
Markham, ON
L3T6G2
Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |
