TECHNOLOGY FOCUS - BIOTECHNOLOGY - Preferred Strain: The strain is selected from Geobacter sulfurreducens, Geobacter metallireducens, Geobacter lovleyi, Geobacter pickeringii, Geobacter grbiciae, Geobacter pelophilus, Geobacter bremensis, Geobacter hydrogenophilus, Geobacter uraniireducens, Geobacter humireducens, Geobacter bemidjiensis, Geobacter argillaceus, Geobacter chapellei, Geobacter psychrophilus, Geobacter pilgrimii, Geobacter plymouthensis, Geobacter rifilensis, and Geobacter coloradoensis. Preferably, the strain is Geobacter sulfurreducens strain identified as ATCC deposit PTA-10249, or PTA-10250, or the strain is Geobacter sulfurreducens strain identified as ZMS-253, ZMS-353 or ZMS-453. The functional mutation is in a gene encoding a transcriptional repressor acting on the succinyl-coenzyme A (CoA) synthetase promoter, where the mutation results in the activation of the succinyl CoA synthetase enzyme. It is in the gene encoding GSU0514. Preferred Method: In generating electrical power at a waste facility, the waste facility comprises a biomass waste resulting from any one of a dairy, agriculture, food processing, brewery, or vintner industry. In improving in situ bioremediation of contaminated site, the contaminant is a halogenated solvent, and utilization of the electron donor by the Geobacter strain results in the dehalogenation of the halogenated solvent. The contaminant is a toxic metal or radionuclide selected from uranium, vanadium, chromium, technetium, and cobalt. The Geobacter strain is isolated Geobacter strain capable of effective utilization of organic compound selected from pyruvate and 3-12C metabolic precursors of pyruvate as an electron donor, and having a functional mutation in a gene encoding a repressor of an enzyme of the tricarboxylic acid cycle. In making isolated adapted strain of electricigenic microbe, the preferred organic compound is acetate and the alternative organic compound is pyruvate or 3-12C metabolic precursor of pyruvate. The parent strain is the Plate Count Agar (PCA) strain of Geobacter sulfurreducens and the isolated adapted strain is Geobacter sulfurreducens strain 1-23 or strain ZMS-153. The preferred organic compound is acetate and the alternative organic compound is lactate. The parent strain is the 1-23 strain of Geobacter sulfurreducens, the preferred organic compound is lactate and the alternative organic compound is glucose or glycerol or xylose. EXAMPLE - No suitable example given.