Company: SUNE
Filing Date: 2025-02-27
Form Type: 424B5
Source: 0001213900-25-017771
Chunk: 45

Company: SUNation Energy, Inc.
Filing Date: 2025-02-27
Form: 424B5
Chunk 45
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 copy of any or all of the documents incorporated by reference in this prospectus, including exhibits to these documents.
You should direct any requests for documents to:

<div align='center'>SUNation Energy, Inc.

171 Remington Blvd.

Ronkonkoma, NY 11779

Attention: Corporate Secretary
Telephone (631) 750 9454</div>

You also may access these filings on our website
at https://sunationenergy.com/. We do not incorporate the information on our website into this prospectus or any supplement to this prospectus
and you should not consider any information on, or that can be accessed through, our website as part of this prospectus or any supplement
to this prospectus (other than those filings with the SEC that we specifically incorporate by reference into this prospectus or any supplement
to this prospectus).

Any statement contained in a document incorporated
or deemed to be incorporated by reference in this prospectus will be deemed modified, superseded or replaced for purposes of this prospectus
to the extent that a statement contained in this prospectus modifies, supersedes or replaces such statement.

<div align='center'>S-21</div>

PROSPECTUS

<div align='center'>Pineapple Energy Inc.

$100,000,000
Preferred Stock
Common Stock
Debt Securities
Stock Purchase Contracts
Warrants
Rights
Units
9,411,744 Shares of Common Stock
Offered by the Selling Stockholders</div>

We may offer and sell, from time to time in one
or more offerings, up to $100,000,000 in the aggregate of preferred stock, common stock, debt securities, stock purchase contracts, warrants,
rights and units, in any combination. In addition, the selling stockholders may offer and sell, from time to time, up to an aggregate
of 9,411,744 shares of common stock under this prospectus. We will not receive any of the proceeds from the sale of shares of our common
stock by the selling stockholders.

On September 15, 2021, we entered into an Amended
and Restated Securities Purchase Agreement (the “securities purchase agreement”) with the selling stockholders for a private
placement of our Series A convertible preferred stock and common stock warrants. The number of shares of common stock offered for sale
by the selling stockholders consists of 200% of the 2,352,936 shares of our common stock that may be issued upon conversion, at