Installer profile

Sunday Energy

Provisional grade. Sunday Energy has an active NYC DCWP record and a positive NYS DPS compliance letter, but no state-verifiable license number and very limited public operating detail, which caps the grade at C.

Sunday Energy LLC has an active NYC DCWP license at a Brooklyn address and a June 20, 2025 NYS DPS letter accepting its 2024 DER-provider compliance documentation. That is real, useful evidence. The public record gets sparse after that: no founding year, service area, install count, employee count, equipment brands, warranty terms, or confirmed New York BBB record were found in this research. The company markets installation on challenging rooftops, roofing solutions, monitoring, and financing, but those are company descriptions rather than measured proof of delivery. Its DCWP license is a local contracting credential, not a state-verifiable installation license number. The combination is enough to put it on a careful shopper's list, not enough to support a grade above C.

The evidence

LongevityPending verification

No founding year was stated on the company's why Sunday or FAQ pages, and no New York BBB profile was found. The only Sunday Energy BBB profile located was for an Andover, Massachusetts business and was not confirmed as the same company. Treat the business history as unverified.

Source: Sunday Energy why Sunday page

Complaints and enforcementVerified

NYS DPS Staff reviewed Sunday Energy LLC's 2024 annual compliance documentation under UBP-DERS Section 3F and accepted the filing as compliant on June 20, 2025, with acceptance limited to that requirement. No New York BBB record, lawsuits, acquisitions, or distress signals were found in the research. The compliance letter is positive but narrow, not a blanket endorsement of every part of the business.

Source: NYS DPS compliance letter

Verifiable volumePending verification

No installation count, MW figure, or employee count was published on the company pages we reviewed, and Sunday Energy did not match the 2026 Top New York Solar Contractors list. The lack of a negative record is not the same thing as independently verified operating volume.

Source: Sunday Energy FAQ

License statusPending verification

NYC's DCWP database lists SUNDAY ENERGY LLC, license 2125772-DCWP, type Premises, as Active through February 28, 2027 at 137 Lynch St in Brooklyn. New York has no state solar contractor license, and no company-published license number was found. That leaves this as a DCWP record only, with no state-verifiable license number for the installation work.

Source: NYC Open Data Legally Operating Businesses

Warranty termsPending verification

Neither of the company pages we reviewed states workmanship, roof penetration, equipment, or production warranty terms. This is not a detail to leave for later. Ask for the warranty document before you agree to an assessment, because a monitored system can still leave a homeowner exposed if labor coverage is unclear.

Source: Sunday Energy FAQ

Company facts

Headquarters	137 Lynch St, Brooklyn, NY
Entity	Sunday Energy LLC
Named contact	Joel Breier (per NYS DPS correspondence)
DCWP license	2125772-DCWP, Active through February 28, 2027
Published offerings	Solar for challenging rooftops, roofing solutions, monitoring tools, and financing

Data pulled August 18, 2026 from NYS DPS compliance letter, NYC Open Data, Sunday Energy and Sunday Energy FAQ.

How to read this

Sunday Energy has one strong regulatory data point and a lot of blank space around it. The DPS compliance letter confirms a specific annual filing, while the DCWP record confirms a local license. Neither one tells you who performs the electrical work, how many systems the firm has built, or what happens if an installation leaks or underproduces. Ask for the DOB electrician's license number, a current certificate of insurance, the written warranty, and three recent projects comparable to your roof. Until those basics are on the table, the C cap is the honest result. Our full rubric, including how our own installation business gets graded on the same scale, is on the methodology page. We are a solar installer and we partner with other solar companies. Grading is structurally separated from revenue; see disclosures.