THE Energy Regulation Board (ERB) has adjusted upwards the price of diesel by K4.21 to K33.99 from K29.78, while petrol has been maintained at K27.15. ERB Board Chairperson James Banda says the petrol price has remained unchanged as the changes in the wholesale price were within the set trigger band threshold of 2.5 percent. In a statement, Thursday, Banda said the improvement in the exchange rate moderately offset the impact of international oil prices, which would have resulted in higher domestic fuel prices. “The Energy Regulation Board (ERB) has undertaken a review of petroleum product prices for the month of May 2026 and hereby announces the revised pump prices applicable. During the review period, international oil prices continued to rise,...