The Clal and Investec-backed solar energy efficiency company is gaining a further round of series C funding worth $5m.

Tigo Energy secured $5m in series C financing on Tuesday from investors including venture capital (VC) fund Israel Cleantech Ventures (ICV) and investment partnership Generation Investment Management.

Tigo’s past backers also include investment holding company Clal and wireless communications company Investec Appliances. Both backed Tigo’s initial series C round which raised $10.1m in May 2010. Private equity firm Matrix Partners, VC firm OVP Venture Partners also participated in the 2010 round, as did IVC, all of which were already…