Download file "edfg2a.csv" from https://spreadsheets.google.com/ccc?key=0AsLhMBA3NXL4dFRvbnpvZGprQ1l5eW1IMGtBbDhJMGc&hl=en_GB to your working directory

e <- read.csv("edfg2a.csv", skip = 2,header=TRUE, sep=",", na.strings="-", dec=".", strip.white=TRUE)

em<-max(e$Hydro)

png(file="nzegv2.png",pointsize = 16,width=800,height=600)

plot(e$Year,e$Hydro,axes="FALSE",type="l",col=2,lwd=2,ylim=c(0,em),ylab="Gigawatt hours",xlim=c(1974,2014),xlab="Year",main="NZ Electricity Generation by Fuel Type")

axis(1,line=0,at=c(1975,1980,1985,1990,1995,2000,2005),labels=c(1975,1980,1985,1990,1995,2000,2005),lwd=1)

axis(2,lwd=1)

text(2009,e$Hydro[35],"Hydro",adj=0,col=1)

lines(e$Year,e$Gas,col=3,lwd=2)

text(2009,e$Gas[35],"Gas",adj=0,col=1)

lines(e$Year,e$Coal,col=6,lwd=2)

text(2009,e$Coal[35]+500,"Coal",adj=0,col=1)

lines(e$Year,e$Geothermal,col=4,lwd=2)

text(2009,e$Geothermal[35]-500,"Geothermal",adj=0,col=1)

lines(e$Year,e$Wind,col="darkgoldenrod1",lwd=2)

text(2009,e$Wind[35]+1000,"Wind",adj=0,col=1)

lines(e$Year,e$Wood,col=7,lwd=2)

text(2009,e$Wood[35]+500,"Wood",adj=0,col=1)

lines(e$Year,e$Oil,col=5,lwd=2)

text(2009,e$Oil[35]-500,"Oil",adj=0,col=1)

mtext(side=3,line=0.3,cex=0.9,"Source: Ministry of Economic Development Energy Data File 2009")

box(lwd=3)

dev.off()

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This chart was created with R.