Where Has all the Power Gone? A Health Check of Italian Solar Electricity in 2016
| Autor: | Virtuani, A., Pravettoni, M., Parini, L., Morganti, L., Skoczek, A., Betak, J., Mussetta, M., Marchionna, S. |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
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| DOI: | 10.4229/eupvsec20172017-6bv.2.37 |
| Popis: | 33rd European Photovoltaic Solar Energy Conference and Exhibition; 2401-2405 In 2015 Italy had a level of PV penetration >8%. However, as reported by professionals and the specialized press with sometimes alarmist tones, solar electricity generation in 2016 has been much lower compared to 2015. With final 2016 data now available, we give a closer look at the aggregate data and calculate some Key Performance Indicators (KPI) for the whole country and for each region to assess the health status of solar PV electricity in Italy twelve years after the start (2005) of the feed-in-tariff subsidy scheme. At country level, the 2016/2015 relative variation in final yield Yf is - 5.4%. About 80% of this variation can be attributed to a lower insolation in 2016 compared to 2015 (-4.3%). The remaining losses are reflected in the –1.1% PR relative variation (2016/2015) and can be attributed to a mix of factors: degradation in performance (system/components), moderate use of O&M, etc. At country level, the average PR is below 70%. This low value is partly attributed to the fragmentation and small average size of PV systems in Italy (~ 28 kWp in 2016), to their non-optimal orientation/inclination and to presence of shading. Other reasons, linked to the dynamics and features of the national feed-in tariff incentive schemes are briefly recalled. We further note, that the alarmist tones circulated about the pronounced decline in generation of solar electricity in 2016, are not justified. On the contrary, 2015 has been a year with an availability of solar resources considerably higher than 2016 and of the long-term average. Nevertheless, still concerns about the actual (and long-term) performance of the Italian solar park as a whole exist. |
| Databáze: | OpenAIRE |
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