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In contrast to @iea's announcement that renewable capacity installations stalled in 2018, @BloombergNEF, which has historically been more accurate, estimates solar installations up 10% to 109 GW, not flat at 97 GW. And don't forget, capacity factors for new build keep improving.https://twitter.com/IEA/status/1125480364577832963 …
Quick update: it looks like one of the main reasons for discrepancy is methodological. @IEA includes only known capacity additions, which may rise as they hear about laggards. The @BloombergNEF team adds a buffer for laggards so that (if they nail it) the numbers don't change.
So both @IEA and @BloombergNEF figures are probably right: @IEA for confirmed capacity additions, @BloombergNEF the best estimate of where 2018 installations might end up with hindsight. But the main point: whether 2018 was flat to 2017 or up 7% - RE IS NOT GROWING FAST ENOUGH!
How accurate do you think the data is for yourselves and IEA for the wattage installed?We're seeing big leaps in the kW ratings for panels with prices staying flat per watt or even going down. This implies that same money and size installation will generate 5,10, even 15% more.
Everyone tracks $ and Watts. The big story of the past 8 years is stalled investment globally in clean energy, but installations soaring. And Wh per Watt have increased too, as technology and project design have improved.
Good to know. However that would be only 7% growth in overall installed MW which is still troublingly low. Also, larger share of solar in installed MW means lower load factor for renewables installs as a whole.
IEA has been historically wrong, with installation figures as well as forecasts ... most of the time underestimating
I think you're being rather kind to IEA: they have historically downplayed renewables hugely.
0% vs 10% is quite a large margin for error. What accounts for the difference?
Are CFs improving for all technologies or only for wind?
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