At 05:58hrs Truck 21 and Battalion 21 where dispatched to assist the Fairchild FD with a fire at the renewable energy facility in the 14100 block of Davis Estate Rd. After a 30-minute response personnel arrived to find a pump fire in the center of the facility. Personnel staged as Fairchild FD and Richmond FD personnel began operations creating a path to secure the valve supplying the fuel. Once the valve was secured, and fuel flow stopped, the remaining fire was extinguished within 20-minutes. Following completion of assignments all units returned to service at 08:11hrs. During the incident the Fort Bend County Haz Mat Team was on site for air monitoring and remediation evaluation.