The Korea-based conglomerate and Ireland-based utility's corporate venturing unit back the US-based roof top solar business

Korea-based conglomerate Hanwha Group and Ireland-based utility ESB’s corporate venturing unit backed US-based roof top solar business TenKsolar with a $15.5m investment on Wednesday last week.

Hanwha led the series B round, and was joined in the investment by ESB Novusmodus, a clean tech fund backed by ESB. Hanwha is also a backer of US solar company OneRoof Energy.

Robert Schrimpff, partner of Novusmodus said: "We are very impressed with tenKsolar’s innovative and holistic approach to achieving solar PV efficiency.…