# EDGAR Filing Document

**Accession Number:** 0001537435
**File Stem:** 0001537435-25-000077
**Filing Date:** 2025-7
**Character Count:** 2618
**Document Hash:** 4ca1b6c0a87c358eccb6b17e9b44ad07
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001537435-25-000077.hdr.sgml**: 20250814

**ACCESSION NUMBER**: 0001537435-25-000077

**CONFORMED SUBMISSION TYPE**: CORRESP

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250715

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TECOGEN INC.
- **CENTRAL INDEX KEY:** 0001537435
- **STANDARD INDUSTRIAL CLASSIFICATION:** AIR COND & WARM AIR HEATING EQUIP & COMM & INDL REFRIG EQUIP [3585]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 043536131
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** CORRESP

**BUSINESS ADDRESS:**
- **STREET 1:** 76 TREBLE COVE ROAD
- **STREET 2:** BLDG. 1
- **CITY:** NORTH BILLERICA
- **STATE:** MA
- **ZIP:** 01862
- **BUSINESS PHONE:** 781-466-6400

**MAIL ADDRESS:**
- **STREET 1:** 76 TREBLE COVE ROAD
- **STREET 2:** BLDG. 1
- **CITY:** NORTH BILLERICA
- **STATE:** MA
- **ZIP:** 01862

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** TECOGEN INC
- **DATE OF NAME CHANGE:** 20111215

**TECOGEN INC.**

**76 Treble Cove Road**

**Building 1**

**North Billerica, Massachusetts 01862**

July 15, 2025

**<u>VIA EDGAR</u>**

United States Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549

Attn:&nbsp;&nbsp;&nbsp;&nbsp;Aliya Ishmukhamedova, Esq.

Division of Corporation Finance

Office of Technology

**Re:&nbsp;&nbsp;&nbsp;&nbsp;Tecogen Inc.**

**&nbsp;&nbsp;&nbsp;&nbsp;Form S-1 Registration Statement**

**&nbsp;&nbsp;&nbsp;&nbsp;(<u>File No. 333-288668)</u>**

**&nbsp;&nbsp;&nbsp;&nbsp;<u>Acceleration Request</u>:**

&nbsp;&nbsp;&nbsp;&nbsp;Requested Date: July 17, 2025

&nbsp;&nbsp;&nbsp;&nbsp;Requested Time: 5:00 p.m. Eastern Time

Ladies and Gentlemen:

Pursuant to the requirements of Rule 461 under the Securities Act of 1933, as amended, Tecogen Inc., a Delaware corporation *("Company")*, hereby respectfully requests acceleration of the effective date of the Company's Registration Statement on Form S-1 (File No. 333-288668) filed with the Securities and Exchange Commission on July 15, 2025, to **<u>5:00 p.m. (Eastern Time) on July 17, 2025</u>**, or as soon thereafter as practicable.

If you have any question regarding the foregoing, please contact Neil R.E. Carr, Esq., of the law firm of Somertons, PLLC, our outside legal counsel, at 202.459.4651 or by email at neil.carr@somertons.com.

Respectfully submitted,

<u>/s/ Abinand Rangesh</u>

Abinand Rangesh

Chief Executive Officer

cc:&nbsp;&nbsp;&nbsp;&nbsp;Neil R.E. Car, Esq.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Somertons, PLLC

<br>