All notices, demands, requests, consents, approvals, and other communications required or permitted hereunder shall be in writing and, unless otherwise specified herein, shall be (i) personally served, (ii) delivered by reputable overnight courier service with charges prepaid, or (iii) transmitted by fax, addressed, if to the Company, to Chief Financial Officer, EuroSite Power Inc., 45 First Avenue, Waltham, MA 02451, fax: (781) 622-1027, and if to a Subscriber, to such Subscriber at the address set forth on the signature pages hereto or to such other address as such party shall have specified most recently by written notice.