Terawatt Solar

What Terawatt Solar does

Terawatt Solar Inc. is a privately held, Ontario-based solar photovoltaic (PV) installer founded in 2016 and headquartered at 7030 Woodbine Ave, Suite 500, Markham. The company designs, sells, and installs rooftop and ground-mount solar systems — and increasingly paired battery energy storage — for residential homeowners and, to a lesser extent, commercial customers across Ontario, with primary concentration in the Greater Toronto Area, Halton Region, and Waterloo Region. Every installation is performed by an in-house Master Electrician and ESA-certified crew under the company's ECRA/ESA Electrical Contractor license; no subcontractors are used.

The technical stack is built on third-party Tier-1 hardware — Longi Solar high-efficiency bifacial panels rated for -40°C operation and 5,400 Pa snow loads, paired with SolarEdge Home Hub inverters — wrapped in proprietary service workflows covering satellite roof analysis, 12-month utility bill auditing, design, permitting, and end-to-end interconnection management with utilities including Alectra, Toronto Hydro, Burlington Hydro, and Oakville Hydro. The company also manages Ontario's Home Renovation Savings Program rebate application (up to $10,000) on behalf of customers and provides a free real-time monitoring app post-installation.

Commercially, Terawatt operates a sales-led, direct-to-consumer model with an in-house discovery-call funnel, a self-serve price calculator, Performance Max paid acquisition, and a $750 referral program. Revenue is generated through one-time system sales ($2.42-$3.05/W; $18k-$24k for a typical 7.5 kW system, $24k-$35k for a 10 kW system before rebates) plus professional installation services and 0% in-house financing. An 8-year labor warranty and 25-year manufacturer performance warranty underpin a 7-12 year customer payback claim. No external funding rounds, M&A activity, or institutional ownership has been disclosed.

Name

Terawatt Solar

Legal name

Terawatt Solar Inc.

Website

https://terawattsolar.ca

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

Terawatt Solar Inc. is a privately held Ontario solar installer (founded 2016, Markham) selling and installing rooftop, ground-mount, and battery storage systems for residential and small commercial customers across the GTA and broader Ontario, using in-house ESA-licensed electricians and Longi/SolarEdge hardware.

Ownership category

akta.pro rank

Product category

Solar Installation Services

NAICS

Solar Electric Power Generation (221114)

akta.pro industry

PRIMARYEUAMABAB

Solar EPC & Construction (Utility-Scale, Rooftop, Balance of System)

Energy, Utilities & Environment/Renewable Energy (Solar, Wind, Hydro & Geothermal)/Solar Energy (PV, CSP, Rooftop & Utility-Scale)

SECONDARYIMADAFAO

Solar Roofing & Roof-Mounted PV Systems

Industrials, Manufacturing & Construction/Building Materials & Products/Roofing Materials & Systems

SECONDARYEUACALAJ

Renewable Distributed Generation (Rooftop/Onsite Solar, Small Wind, Small Hydro)

Energy, Utilities & Environment/Electric Power Generation/Distributed & Behind-the-Meter Power Generation (Microgrids, DG)

Keywords

• Residential solar installation
• Commercial solar systems
• Battery energy storage
• Net metering solutions
• Solar panel installation

Headquarters

HQ city

Markham

HQ country

Canada

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Technology or R&D

Revenue model

1. Solar Panel System Sales: One-time sale of solar panel systems including equipment (panels, inverters, mounting hardware) and installation services. Pricing ranges from $2.42 to $3.05 per watt. Standard 7.5 kW systems range $18,000-$24,000, 10 kW systems $24,000-$35,000 before incentives.
2. Solar Installation Services: Professional installation services performed by in-house Master Electrician and ESA-certified crew. Includes site assessment, design, permitting, interconnection application management, and post-installation support.
3. Financing Services: In-house financing options allowing customers to trade their hydro bill for a lower solar panel payment. Offers 0% interest financing.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels7 records

Core offering

Terawatt Solar is a turnkey solar PV installation company serving residential and commercial customers across Ontario. The company designs, sells, and installs rooftop solar, ground mount, and battery storage systems using Longi Solar high-efficiency panels and SolarEdge Home Hub inverters, manages the full utility interconnection and permitting process, and offers in-house 0% interest financing. Headquartered in Markham, Ontario, the company has been operating since 2016.

Product overview

Terawatt Solar offers a comprehensive solar energy solution portfolio centered on residential and commercial solar installation services. The core offering consists of turnkey solar panel installations (rooftop and ground mount) with battery storage integration. The company provides a full-service experience from initial solar assessment and system design through installation by in-house certified electricians, supported by proprietary tools including a Solar Price Calculator and customer monitoring app. Additional services include net metering and load displacement program management, utility interconnection handling, and in-house financing. The company positions itself as Ontario's longest-running solar installer since 2016, using Longi Solar high-efficiency panels and SolarEdge Home Hub inverters.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Solar Installation

Quantifiable outcome

• Reduces electricity bills by 70-90%
• +5 more outcomes

Named customers5 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eight partnerships are on record, tiered core.

• Alectra UtilitiescoreStrategic or Co-development PartnerUtility partner for interconnection process. Terawatt Solar manages the full interconnection application process including grid capacity approvals for Alectra customers.
• Toronto HydrocoreStrategic or Co-development PartnerUtility partner for net metering and grid interconnection. Terawatt manages complete interconnection process from application to meter swap for Toronto Hydro customers.
• Burlington HydrocoreStrategic or Co-development PartnerUtility partner for DER projects 10kW or less. Manages interconnection and permitting for Burlington Hydro customers.
• Oakville HydrocoreStrategic or Co-development PartnerUtility partner for net metering projects. Handles full interconnection and permitting process for Oakville Hydro customers.
• Longi SolarcoreTechnology or IntegrationEquipment supplier providing high-efficiency solar panels. Longi panels are premium, high-efficiency panels used in all Terawatt installations.
• SolarEdgecoreTechnology or IntegrationEquipment partner providing SolarEdge Home Hub inverters. SolarEdge is a leading inverter brand consistent with top-tier Ontario climate conditions.
• Ontario Home Renovation Savings ProgramcoreStrategic or Co-development PartnerGovernment incentive program offering up to $10,000 for solar and battery storage. Terawatt manages full application process, pre-installation forms, grid capacity and permitting approvals, and post-installation documentation for auditors.
• ECRA/ESA (Electrical Safety Authority)coreStrategic or Co-development PartnerRegulatory body licensing electrical contractors in Ontario. Terawatt is an ESA-licensed electrical contractor, verified through ESA Contractor Locator Tool.

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Polaron Energy: Ontario-based residential and commercial solar installer offering rooftop solar, battery storage, and EV charging across the GTA and surrounding regions. Closest direct comparable given overlapping Ontario geography, similar product mix, and identical customer base of homeowners seeking bill-reduction solutions.
• Enbridge Home Solutions: Canadian energy utility's residential solar and home-energy solutions division, including solar panel and battery installation in Ontario. Comparable in target market (Ontario homeowners), service model (turnkey install), and reliance on provincial incentives.

Broad incumbents

• Tesla Energy: Offers Solar Roof, Powerwall, and integrated energy products targeting residential and commercial customers in North America. A scaled incumbent in residential distributed solar with brand, capital, and software advantages Terawatt lacks.
• Sunrun: Largest US residential solar, battery, and energy services company with national operations and an asset-financed subscription model. Comparable product offering (rooftop solar + battery) and similar homeowner customer, though larger scale and primarily US footprint.

Regional players

• SkyFire Energy: Alberta-based commercial and utility-scale solar EPC serving western Canada. Comparable EPC/installation capabilities for distributed solar, but operates in a different geography (primarily Alberta/Saskatchewan) and tilts toward larger commercial projects.

Others

• Enphase Energy: Leading microinverter and home battery (IQ Battery) manufacturer with deep ties to the residential solar installer channel. Comparable as Terawatt's inverter peer/competitor choice (Terawatt uses SolarEdge) and as an enabler of the same homeowner solar-plus-storage value proposition.
• SolarEdge Technologies: Supplier of the Home Hub inverter platform used by Terawatt across all installations. Comparable as a technology supplier/ecosystem participant whose product roadmap directly affects Terawatt's installation economics and differentiation.
• Canadian Solar: Major solar module manufacturer with project development arms in Canada and globally. Comparable as a potential upstream supplier (vs. Terawatt's current use of Longi) and as an adjacent vertically integrated player competing for distributed solar and battery projects.
• Longi Green Energy: Global Tier-1 solar module manufacturer whose high-efficiency bifacial panels are the standard product Terawatt installs. Comparable as a key supplier/ecosystem participant and as a benchmark for premium residential panel performance.
• Natural Resources Canada — Canada Greener Homes Initiative: Federal program administering retroactive and complementary grants that influence Ontario residential solar demand alongside the provincial Home Renovation Savings Program. Comparable as the policy/ecosystem counterparty shaping Terawatt's customer ROI and rebate stack.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/@terawattsolarca
• Facebookfacebook.com/terawattsolarGTA
• LinkedInlinkedin.com/company/terawatt-solar
• Instagraminstagram.com/terawattsolar

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Terawatt Solar