1. Solar delivers cheapest electricity ‘ever, anywhere, by any technology’
Half the price of coal!
- In last week’s energy auction, Chile accepted a bid from Spanish developer Solarpack Corp. Tecnologica for 120 megawatts of solar at the stunning price of $29.10 per megawatt-hour (2.91 cents per kilowatt-hour or kwh). This beats the 2.99 cents/kwh bid Dubai received recently for 800 megawatts. For context, the average residential price for electricity in the United States is 12 cents per kilowatt-hour.
Continuity of electricity supply is no trivial matter. Back in April-May 1996 at our place we had rain on 14 consecutive days. Over the period we had 833 mm or over 33 inches in the old language. A renewable energy electricity supply system needs to survive such a challenge, as do home off-gridders. Imagine not just the lights out, but rotting food in the refrigerator, no pumping of petrol at the bowser, the refrigerators and lights failing at the supermarket, no water coming out the tap. For the whole Brisbane area.
Coal provides 40% of the world’s electricity, with 75% of this capacity deemed “subcritical”, in other words dirty. That’s a little over 1,200 GW of capacity. The IEA believes that we must shut down 290 GW of subcritical generation worldwide by 2020 in order to stay within a 2°C temperature rise.
