A single coated conductor for an overhead power transmission or distribution line comprising: one or more electrical conductors; and a first coating provided on at least a portion of the one or more electrical conductors, wherein the first coating comprises: (i) an inorganic alkali metal silicate resin; (ii) from about 5 to about 25 wt.% of an optically active element which comprises rutile titanium dioxide (TiO 2) having an average particle size ("aps") of 2≥ 100 nm, silicon dioxide (SiO 2), cerium hydroxide (Ce 3), sodium aluminosilicate (AlNa 12 SiO 5), magnesium oxide, calcium oxide, aluminium oxide, zinc oxide, calcium carbonate, aluminium silicate, kaolin (Al 2 O 3.2SiO 2), or barium sulphate; and (iii) a superhydrophobic agent which comprises surface functionalised silica nanoparticles; one or more functional polysiloxanes; or micro powder polymethylsilsesquioxane; wherein the first coating has an average thermal emissivity coefficient E ≥ 0.90 across the infrared spectrum 2.5-30.0 μm when tested in accordance with ASTM E408 and has an average solar reflectivity coefficient R ≥ 0.80 and/or an average solar absorptivity coefficient A ≤ 0.20 across the solar spectrum 0.3-2.5 μm when tested in accordance with ASTM E903, preferably wherein the first coating has an average solar reflectivity coefficient R ≥ 0.90 when tested in accordance with ASTM E408 and/or an average solar absorptivity coefficient A ≤ 0.10 across the solar spectrum 0.3-2.5 μm when tested in accordance with ASTM E903. one or more electrical conductors; and a first coating provided on at least a portion of the one or more electrical conductors, wherein the first coating comprises: (i) an inorganic alkali metal silicate resin; (ii) from about 5 to about 25 wt.% of an optically active element which comprises rutile titanium dioxide (TiO 2) having an average particle size ("aps") of 2≥ 100 nm, silicon dioxide (SiO 2), cerium hydroxide (Ce 3), sodium aluminosilicate (AlNa 12 SiO 5), magnesium oxide, calcium oxide, aluminium oxide, zinc oxide, calcium carbonate, aluminium silicate, kaolin (Al 2 O 3.2SiO 2), or barium sulphate; and (iii) a superhydrophobic agent which comprises surface functionalised silica nanoparticles; one or more functional polysiloxanes; or micro powder polymethylsilsesquioxane; (i) an inorganic alkali metal silicate resin; (ii) from about 5 to about 25 wt.% of an optically active element which comprises rutile titanium dioxide (TiO 2) having an average particle size ("aps") of 2≥ 100 nm, silicon dioxide (SiO 2), cerium hydroxide (Ce 3), sodium aluminosilicate (AlNa 12 SiO 5), magnesium oxide, calcium oxide, aluminium oxide, zinc oxide, calcium carbonate, aluminium silicate, kaolin (Al 2 O 3.2SiO 2), or barium sulphate; and (iii) a superhydrophobic agent which comprises surface functionalised silica nanoparticles; one or more functional polysiloxanes; or micro powder polymethylsilsesquioxane; wherein the first coating has an average thermal emissivity coefficient E ≥ 0.90 across the infrared spectrum 2.5-30.0 μm when tested in accordance with ASTM E408 and has an average solar reflectivity coefficient R ≥ 0.80 and/or an average solar absorptivity coefficient A ≤ 0.20 across the solar spectrum 0.3-2.5 μm when tested in accordance with ASTM E903, preferably wherein the first coating has an average solar reflectivity coefficient R ≥ 0.90 when tested in accordance with ASTM E408 and/or an average solar absorptivity coefficient A ≤ 0.10 across the solar spectrum 0.3-2.5 μm when tested in accordance with ASTM E903.