Origin shocks market with profit warning and writedowns Updated Save Share Investors wiped almost $620 million off the market value of Origin Energy on Friday after the company warned of $2.25 billion of write-downs that will plunge it into the red for 2020-21 and a bigger-than-expected hit to earnings this coming year due to weak power prices and higher fuel costs. While the impact of low electricity prices had been well flagged, the hit from higher coal and gas costs took the market by surprise, with Originâs shares plunging 8 per cent to close at $4.11, their lowest for almost two months. The Eraring coal plant in NSW is Originâs only coal-fired power station.Â