Waste-to-ethanol producer LanzaTech has added $60m to a Mitsui and Siemens-backed series D round that now totals $120m.

US-based sustainable chemicals and fuel producer LanzaTech secured $60m in series D funding from sovereign wealth fund New Zealand Superannuation Fund on Monday.

The funding extended Lanzatech’s series D round, which reached a $60m first close in March 2014, to $120m. Lanzatech has now raised approximately $200m since it was founded in New Zealand in 2005.

Japan-based conglomerate Mitsui originally led the first tranche of the series D round with a $20m investment, while industrial conglomerate Siemens and financial services…