The EU-funded NLO for PV project has doubled the maximum efficiency of converting solar radiation to energy by designing a device to harvest the heat losses of photovoltaics.  © mikolajn - fotolia.comAs Europe strives to position itself as a world leader in renewable energy, one challenge it must solve is the often inefficient process of converting renewable resources into energy. For example, due to a mismatch between the solar spectrum and the spectral response of solar cells, the process of converting solar radiation into electricity is highly inefficient.