Officials said there was no release of any unsafe hydrogen sulfide gas after lava crept over the plugged wells Sunday.
About 40 kilometers (25 miles) down Kilauea's east flank, lava gushed from six giant cracks, with molten rock from two fissures advancing over another street of homes in the Leilani Estates housing development, the observatory said in a statement.
Lava erupted from Hawaii's Kilauea volcano reached site of the Puna Geothermal Venture (PGV) plant and threatened the nearest well 130 feet (39.6 meters) away, local media reported on Sunday.
"There were eight houses taken on this road in 12 hours", Ikaika Marzo said in a Facebook video as he stood on Kaupuli street and showed a black, glass-like lava field where his cousin's house previously stood.
Ten more homes in the path of Hawaii's Kileaua volcano eruption have been destroyed overnight by fast-moving lava, a spokesperson for the Hawaii County Civil Defense told ABC News.More news: Bryce Harper won't be rooting for Capitals in Stanley Cup Finals
Firefighters went door to door evacuating residents before the lava arrived.
While eruptions continue at the main crater, Kilauea's lava flows have also proven extremely risky for bystanders and residents who refused to evacuate.
She got the call just before midnight Sunday and was able to get in this morning to watch a chapter of her life come to an end. About 2,000 people have fled their homes.
Operator Ormat Technologies Inc last week said there was no above-ground damage to the plant but it would have to wait until the situation stabilised to assess the impact of earthquakes and lava flows.
Geologists say there's no telling when the volcanic activity might end.
According to Hawaii County Civil Defense, no hydrogen sulfide gas has been detected at the site.