conversely electricity prices tend to be higher when vres are not producing since there is less electricity supply in the market all studies surveyed show that the market value of vre decreases significantly with penetration level and such decrease is more significant for solar pv than for wind power since solar pv generation is concentrated around few hours in the day results confirm that the difference with baseload price is low for the first mw of wind energy or solar pv installed ranging between eur and per mwh depending on individual countries characteristics