Sunder Energy

Name

Sunder Energy

Legal name

Sunder Energy

Website

https://sunderenergy.com

Company type

Private

Founded year

2018

Operating status

Acquired

Headcount range

251–500 employees

Ownership category

akta.pro rank

Product category

Residential Solar Installation

NAICS

Solar Electric Power Generation (221114)

SIC

Electric Services (4911)

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)

Keywords

• Residential solar installation
• Solar panel systems
• Home energy solutions
• Residential solar sales
• Renewable energy

Headquarters

HQ city

Sandy

HQ country

United States

HQ region

North America

Markets served

GTM type

B2C

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Solar Installation and Sales: Sunder Energy generated revenue through residential solar panel installations and sales, contributing approximately $160.5 million in annual revenue ($74 million in direct sales plus $86.5 million in EPC revenue ramping over 12 months) to SunPower's projections.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Sunder Energy sold and installed residential solar panel systems directly to U.S. homeowners through a large 1099 direct-sales network. The company generated approximately 5,500 new solar contracts annually and operated EPC (engineering, procurement, and construction) capability for residential solar deployments. Prior to its September 2025 acquisition by SunPower Inc., it was ranked the No. 11 U.S. residential solar company.

Product overview

Sunder Energy was a residential solar sales and installation company operating in the United States, ranked as the No. 11 U.S. solar company. The company specialized in residential solar panel installations and related services, operating as a sales organization with approximately 5,500 new solar contracts annually. As an independent entity, Sunder Energy operated its own salesforce and installation operations before being acquired by SunPower Inc. in September 2025 for $40 million in cash plus $10 million in shares. Following the acquisition, Sunder Energy's operations, salesforce, and workforce were fully integrated into SunPower's platform, expanding SunPower's coverage from 22 to 45 states and doubling its 1099 salesforce from 841 to 1,734 representatives. The specific products and services offered by Sunder Energy as a standalone company are not detailed in the available source data.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential Solar Panel Systems Turnkey residential rooftop solar panel systems sold and installed for U.S. homeowners to reduce electricity costs and increase energy independence. The offering included hardware (solar panels) plus professional design and installation.
• Residential Solar EPC Services Engineering, procurement, and construction (EPC) services for residential solar deployments, contributing approximately $86.5 million in annual revenue ramping over 12 months to SunPower's projections post-acquisition.

Segments1 record

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Two partnerships are on record, tiered minor and core.

• Cobalt Power SystemsminorStrategic or Co-development Partner · 13 March 2026Following integration of Sunder Energy, SunPower announced a $12 million acquisition of Cobalt Power Systems and signed a $20 million Standby Equity Purchase Agreement with Yorkville Advisors.
• SunPower Inc.coreStrategic or Co-development Partner · 1 September 2025SunPower Inc. acquired Sunder Energy in September 2025 to expand its installation footprint from 22 to 45 states. The acquisition was for $40 million in cash plus $10 million in shares. Sunder Energy's integration was completed within six months using a five-stage methodology.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Sunnova Energy International: National residential solar and battery storage service provider with a similar third-party ownership / loan model and a focus on homeowner customers. Competes head-to-head with Sunder/SunPower for direct residential contracts in overlapping states.
• Momentum Solar: Residential solar installer operating with a direct sales motion and in-house installation crews in multiple states; comparable on customer segment, contract volume profile, and installer-vs-sales model.
• Freedom Forever: Top-10 U.S. residential solar installer with a large direct salesforce and national footprint; closely comparable in GTM motion (direct-to-homeowner, 1099 reps) and target segment.
• Trinity Solar: Privately held, top-ranked U.S. residential solar installer with a direct-to-consumer sales model across multiple states; competes for the same homeowner contracts and shares Sunder's vertical integration of sales plus installation.
• Sunrun: Largest U.S. residential solar installer with a direct-to-consumer, financing-led model; directly comparable to Sunder in target customer (homeowners), sales motion (in-home and direct), and product offering (rooftop PV plus storage).

Emerging players

• Palmetto Solar: Technology-forward residential solar platform with a software-enabled installation marketplace; overlaps with Sunder on homeowner target customer but differentiates on a Clean Energy-as-a-Service / marketplace approach rather than a captive 1099 salesforce.
• Lumio (formerly known as ADT Solar / Petra): Residential solar platform that re-emerged from the ADT Solar wind-down with a dealer-network and software-enabled sales model; comparable in target homeowner segment and provides a useful structural comparison point to Sunder's captive salesforce.

Others

• Enphase Energy: Leading residential solar inverter and battery supplier whose IQ batteries are explicitly featured on SunPower's site post-Sunder integration; an enabling technology partner whose product attach economics directly affect Sunder's storage cross-sell.

Broad incumbents

• Tesla Energy (Tesla Solar): Vertically integrated solar and storage provider serving residential and commercial markets under the Tesla brand; overlaps with Sunder on rooftop solar and Powerwall storage, but at far greater scale and with in-house panel manufacturing.
• SunPower Inc. (parent): Strategic acquirer of Sunder Energy and now operating parent; provides residential solar and storage nationally and is the natural benchmark for combined-entity scale, brand, and product roadmap.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

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 Sunder Energy