Biomasseheizkraftwerk Flohr Neuwied, Biomass power plant in Neuwied, Germany.

The Biomasseheizkraftwerk Flohr stands on the former grounds of the Rasselstein fine sheet metal works in Neuwied. Its core is a grate-fired boiler from Wulff Deutschland, where shredded waste wood of classes A1 to A4 burns at over 850 °C. The steam drives a condensing turbine of about 7.6 MW, and flue gas passes a cyclone, a lime-hydrate reactor and a fabric filter before reaching a 45 m chimney.

The facility started operations in 2005, replacing two older steam boilers that had previously run on gas and oil at the Rasselstein metal sheet factory. This transition marked a shift from fossil fuels to renewable energy at the site.

The plant is a joint project of STEAG Saar Energie and the Neuwied haulage firm Flohr, which specialises in trading waste wood. Residents of Heddesdorf and the Heddesdorfer Berg formed a citizens' initiative against the noise and dust from the plant and its wood-processing yard, and against the burning of contaminated A3 and A4 waste wood; they demand a permit limited to untreated A1 and A2 wood.

The facility is located in an industrial area and can be observed from outside, though visitors should be aware of safety zones. The site remains operational, so standard industrial safety precautions apply to anyone visiting.

The vertical steam boiler features three internal passes and continuously produces large quantities of steam for power generation. This specific design allows efficient use of combustion heat and is a technically interesting aspect of the facility.