Tecogen Inc. announced that it has assumed service contracts from Aegis Energy Services, LLC for 202 cogeneration systems, and expects to assume additional service contracts later in the year. The equipment will be serviced by Tecogen's existing service centers in the Northeast United States. As a counterpart to the transfer of these services contracts, Tecogen will share a portion of the revenue with Dalkia from the assumed contracts for a period of seven years.