Fig. 3: Climate variability and bias in long-term energy yield estimates.
From: Assessing renewable wind and solar energy yield with gridded climate datasets
Cumulative density function of the ratio of the wind (a) and solar (b) energy yield (P50) (2001 to 2013 for wind energy yield; 1974 to 1989 for solar energy yield), to that estimated on previous assessment period (unknown pre-construction assessment period for estimated wind energy yield; 1964 to 1973 for solar energy yield). c Western Hemisphere Warm Poll (WHWP) index (c) and Decadal Pacific Oscillation (DPO) index (d) as a function of time. The red bars, resp. blue bars, correspond to the positive phase, resp. negative phase, of the WHWP and DPO. Data sources: DNV GL (2014) for wind energy yield148; Thevenard and Pelland (2013) for solar energy yield142; NOAA website noaa.gov for WHWP and DPO indices.
