TÜV SÜD Czech a member of the holding company TUV SUD AG, has completed new energy yield study of a photovoltaic power plant of 60 MW, this time in Jordan in the desert area north of Amman . Task of this project was estimation of soiling losses because of frequent sandstorms that reduce the possible production. Cleaning system of photovoltaic modules is needed. To analyze and minimize the impact of soiling loss the Active Cleaning Strategy was created and the number and timing of cleaning interventions was identified. Assessment minimize the risk and helps investors plan better the O&M costs said Dr. Petr Domsa (Senior consultant of TÜV SÜD Czech s.r.o.