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Last week I spoke at the 30th anniversary of conferences bringing the world together to discuss Thermophotovoltaic technology in the Instituto de Energía Solar - Universidad Politécnica de Madrid For those who don't know #Thermophotovoltaics are a proven technology to convert infrared wavelengths of light into electricity by means of the photoelectric effect. The main advantages are scalability, diversity of shape, energy density x10 to x100 that of solar PV, at a spectral efficiency as high as 42%. The disadvantages are a lack of heritage, obscurity, and high early-stage cost. Cement, steel, and glass industries combined, emitted approximately 5200MTonnes of CO2 in 2022. This accounts for about 14% of all energy combustion and industrial processes CO2. These three industrial sectors have become as efficient as practically possible, to increase profitability and reduce the impact on the environment. TPV, as a technology, lends itself particularly well to these industries as they all produce a large quantity of high temperature waste heat. Approximately 10% to 25% of the heat losses are due to emission of photons which, so far, are not captured, recycled, or used in the process. A TPV system can convert their radiated heat into electrical power to partially meet their plant’s electricity requirements. Pyramp are by far the closest to being the first in the world to deliver a solution that uses TPV to convert high temperature (1000° C plus) waste heat in heavy industries to electricity. This is because of our focus on the system-level (non-cell) aspects of this difficult problem and because of our deep engagement with the world's largest cement, glass and steel companies, with whom we are in advanced stages of technical trials. #TPV #Thermophotovoltaics #UltraHighTemperature #Energy #Renewable #Sustainability #CementIndustry #SteelIndustry #GlassIndustry Alejandro Datas ,Professor Brian Norton ,Pearse Coyle, Iftekhar Hussain, Paul Maguire, Barry Fennell.