---
schema_version: "secwatch.filing_event.v1"
accession: "0001537435-23-000041"
form_type: "8-K"
ticker: "TGEN"
cik: "0001537435"
company_name: "TECOGEN INC."
filed_at: "2023-05-11T23:59:59+00:00"
generated_at: "2026-06-15T04:05:06.817358+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Tecogen Q1 2023 revenue down 27.7% to $5.4M, net loss of $1.5M vs prior year profit

## Summary
- Revenue $5.4M, down 27.7% YoY; net loss $1.5M vs net income $0.1M in Q1 2022.
- Product revenue fell 56.6% to $1.7M; services revenue up 7.5% to $3.1M.
- Gross margin declined to 38.9% from 41.6%; operating expenses rose 17.7% to $3.5M.
- Adjusted EBITDA negative $1.3M vs positive $154K in prior year; cash balance $1.6M.
- CEO cites 35% sequential revenue growth from Q4 2022 and expanding pipeline.

## SEC filing metadata
- accession: 0001537435-23-000041
- form_type: 8-K
- ticker: TGEN
- cik: 0001537435
- company_name: TECOGEN INC.
- filed_at: 2023-05-11T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1537435/000153743523000041/0001537435-23-000041-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1537435/000153743523000041/tgen-20230510.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001537435-23-000041
- JSON: https://secwatch.observer/filing/0001537435-23-000041.json
- Plain text: https://secwatch.observer/filing/0001537435-23-000041.txt

## Key facts
- Earnings Releases
  TECOGEN INC. reported financial results for the three months ended March 31, 2023.
  - Period: the three months ended March 31, 2023
  - Result: reported results
  source text: On May 10, 2023, the registrant issued a press release with earnings commentary and supplemental information for the three months ended March 31, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1537435/000153743523000041/0001537435-23-000041-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.