TGEN - Tecogen Inc. 2022 Q4 - Results - Earnings Call Presentation March, 16 2023 10:40 AM Tecogen Inc 2023-03-16 10:40:20 ET The following slide deck was published by Tecogen Inc. in conjunction with their 2022 Q4 earnings call. For further details see: Tecogen Inc. 2022 Q4 - Results - Earnings Call Presentation