CORRECTED-Spain gas demand drops further, coal used more

(Corrects month in paragraph 7 to March from January)
MADRID, April 13 (Reuters) – Spanish gas demand extended a
year-long slump in March, gas grid manager Enagas said
on Friday, as coal continued to grab a larger share of the
country’s generating mix.
A year-on-year fall of 9.0 percent in March followed a jump
of 11 percent in February when demand rose to cope with
unusually cold weather.
Coal has benefited from market regulations introduced in
February 2011 and from more competi