 However, Mavromatis challenged the concession claiming that his concessions conflicted with the Auja Concession and that he was being deprived of his legal rights.The Mavromatis concessions, in effect despite earlier British attempts to abolish it, covered Jerusalem and other localities (e.g., Bethlehem) within a radius of around the Church of the Holy Sepulchre.In the end, Rutenberg's company concessions remained and the company built a power plant that produced electricity using diesel-fueled engines, and by 1923 Jaffa Electric Company's grid covered Jaffa, Tel-Aviv, neighboring (mainly Jewish) settlements, and the British military installations in Sarafand.