A key solution to achieving low carbon energy production is to use renewable energy sources. The largest energy-using sector is the industry, where most of the demand is process heat. The required heat transfer fluid temperature usually does not exceed 400°C. Since the greatest demand for heat occurs during the day, solar energy seems to be a good source to partially cover it. Parabolic trough collectors are well-known, mature technology where direct radiation is used to produce high-temperature heat. Despite the maturity of these installations, the price of individual components is still high, especially the selective coatings that require a multi-step manufacturing process. This paper presents the possibility of partial replacement of selective, expensive coatings by cheap spray coating, well known in solar tower applications. This paper presents the results of a case study for the low-concentrated parabolic trough collector Power Trough 250. The input temperature in the absorber loop is 60°C and the required process temperature is 200°C. The assumed heat transfer fluid was Therminol VP-1. The analysis is based on a mathematical model validated with data provided by the National Renewable Energy Laboratories (NREL). The analysis showed that 8 of the 20 absorbers in solar loop can be covered with a low-cost coating, with no efficiency drop. The results depend on the solar irradiance and the chosen regulation strategy of the flow, so the final number of absorbers possible to cover with non-selective coating requires a long-term analysis for each case examined. The results of this analysis have the potential to significantly reduce the capital investment in solar technologies and popularize their use, especially in high temperature heat production for industrial applications.