PERC technology developed by UNSW is likely to become standard in more than half of all solar cell production across the globe by 2020, ushering in new dramatic falls in the cost of solar technology. Continue reading Climate clippings 147
These posts are intended to share information and ideas about climate change and hence act as a roundtable. Again, I do not want to spend time in comments rehashing whether human activity causes climate change.
This edition is completely about implementation issues and is largely based on a number of links drawn to my attention by John D, for which gratitude and thanks. I’ve restricted the offering to six items to make it more digestible.
1. The battery storage system that could close down coal power
A German company is developing relatively large scale battery storage (up to 10MW-sized battery parks) which could “stabilise the grid faster, cheaper and with greater precision that conventional generation.”
It says that these systems can substitute 10 times the capacity from conventional generation – coal, nuclear and gas – and at a fraction of the cost. According to Younicos spokesman Philip Hiersemenzel, each battery park can be installed at around € 15 million, which means that for an investment of €3 billion, conventional generation in Germany’s 80GW would no longer be needed – at least for frequency and stability purposes. Continue reading Climate clippings 88
Giles Parkinson at RenewEconomy tolls the bell for fossil fuel energy producers pretty much on a daily basis. Recently he posted that Energex’ business model was broken, according to its annual report.
To explain the set-up, Energex is the state-owned electricity wholesaler and distributor for South East Queensland. It doesn’t generate power or retail power to the customers. It services 1.3 residences and other customers in an area with a population of 3.1 million:
Power is generated by power stations and delivered to Energex through a high-voltage transmission network that is owned and operated by Powerlink Queensland, also a government owned corporation. Go here for brief industry structure. The network that delivers power to residences and other customers is owned and operated by Energex.
In our house we buy power from AGL. I’m not sure they do anything other than send us a bill. They probably outsource their metre reading. Certainly they outsource marketing as became clear when I asked a question of a sales representative.
Ergon Energy, also state-owned, is the equivalent company for the rest of the State. Actually it is a cluster of operating companies with several joint ventures, including SPARQ Solutions Pty Ltd, which provides information and communications technology (ICT) solutions and services to both Ergon and Energex. Ergon owns and operates 33 stand-alone power stations in remote off-grid locations selling directly to customers. The shaded area on this map shows the extent of the grid: Continue reading Queensland power generation at the crossroads