Antinuclear

Australian news, and some related international items

Victoria regulator finalises new time-varying tariffs for solar exports — RenewEconomy

Victoria regulator finalises decision on Australia’s first time-varying feed-in tariffs for solar, although acknowledges risks some users could abuse system by charging batteries at night.

via Victoria regulator finalises new time-varying tariffs for solar exports — RenewEconomy

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February 28, 2018 - Posted by | Uncategorized

1 Comment »

  1. When rooftop solar electricity is generated and fed into the electricity grid it is priced in c/kWh whereas when a wind turbine or power station supplies the electricity grid it is charged in $/MWh. Just how confusing this can be is illustrated by the above article where the market cap of $14,200/MWh is expressed as 142c/kWh. The conversion involves dividing by 1000 to go from MWh to kWh so that $14,200/MWh becomes $14.2/kWh. It is very easy, even for experts in the field, to get the conversion wrong.

    The solution to this fallible conversion problem is to express all electricity prices in $/MWh.

    Not only does this avoid errors in converting from one unit to the other but it also makes it easier to compare rooftop solar electricity prices and other electricity prices such as for power stations and wind farm electricity.

    When we do this we see a huge disparity between the power station/wind farm prices and the “feed-in” tariffs being offered by the Vic Govt.

    At peak demand, power station/wind farm electricity prices can, and do, rise to $14,200/MWh. The Vic Govt is offering rooftop solar 29c/kWh = 29,000c/MWh= $290/MWh for the same electricity.

    There are some differences, however, The proposed peak feed-in tariff is averaged over the whole year from 3pm-9pm, whereas the market cap of $14,200/MWh is typically reached in very cold weather and for an hour or so a day in heat waves. It would be very interesting to know how the Vic Govt arrived at its peak feed-in tariff.

    Hope this helps.

    Comment by Dennis Matthews | March 5, 2018 | Reply


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