Carillion Energy Services is to close its Hull Warmsure office, leading to the loss of 150
The company said the move came after the government decided to halve the amount of money people received for selling solar energy to the national grid.
A spokesperson said “every effort” would be made to relocate employees.
Carillion launched a 90-day consultation with employees in December when it announced jobs were at risk.
Previously, ministers said the decision to cut the Feed-in Tariff was intended to make subsidies sustainable given that the cost of solar panels was falling.