Marginal costs down on Chile's SING grid

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Tuesday, December 16, 2014

Generation on Chile's northern SING grid reached 1.51TWh in November, up from 1.45TWh in same-month last year.

Coal, natural gas and liquid fuels accounted for 77.8%, 11.5% and 7.22%, respectively, according a report from operator CDEC-SING. This compares with 73.7%, 10.6% and 14.4% a year ago.

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Wind and solar power combined to contribute 2.3% to the November total.

Marginal costs at the benchmark Crucero 220kV substation averaged US$55.10/MWh, down 37.9% from the November 2013 average of US$88.80/MWh.

Natural gas generation was led by E-CL (154GWh), followed by AES Gener (9.35GWh) and Gas Atacama (9.01GWh).

CDEC-SING published a study on November 3 recommending US$258mn in projects to improve the grid, including works to expand the trunk line system and improve the supply of electricity to cities Iquique and Pozo Almonte.

CDEC-SING has emphasized the importance of technological upgrades to better manage intermittent solar and wind output, as well as regional integration with neighbors like Peru and Bolivia.