I feed in some simple prices and simple battery setup and I'm confused about the outpu

Battery efficiency? about energy-py-linear HOT 3 CLOSED

adgefficiency commented on June 18, 2024

Battery efficiency?

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Comments (3)

ADGEfficiency commented on June 18, 2024

Hi Tom,

This does seem like a real bug - Gross export during the $/MWh 200 price period should be 1 MW, with losses of 0.1 MW and net export of 0.9 MW.

The Export and Losses are ok (they sum to one) - the issue is with the Gross and Net, which I think is calclulated in generate_outputs.

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ADGEfficiency commented on June 18, 2024

Fixed this - the issue was in Battery.calc_net - changed to net = import - export - loss

This now results in

[OrderedDict([('Import [MW]', 1.0),
              ('Export [MW]', 0.0),
              ('Gross [MW]', 1.0),
              ('Net [MW]', 1.0),
              ('Losses [MW]', 0.0),
              ('Charge [MWh]', 0.0),
              ('Prices [$/MWh]', 100),
              ('Forecast [$/MWh]', 100),
              ('Actual [$/1hr]', 100.0),
              ('Forecast [$/1hr]', 100.0)]),
 OrderedDict([('Import [MW]', 0.0),
              ('Export [MW]', 0.90909091),
              ('Gross [MW]', -0.90909091),
              ('Net [MW]', -1.000000001),
              ('Losses [MW]', 0.090909091),
              ('Charge [MWh]', 1.0),
              ('Prices [$/MWh]', 200),
              ('Forecast [$/MWh]', 200),
              ('Actual [$/1hr]', -200.00000020000002),
              ('Forecast [$/1hr]', -200.00000020000002)]),
 OrderedDict([('Import [MW]', None),
              ('Export [MW]', None),
              ('Gross [MW]', None),
              ('Net [MW]', None),
              ('Losses [MW]', None),
              ('Charge [MWh]', 0.0),
              ('Prices [$/MWh]', None),
              ('Forecast [$/MWh]', None),
              ('Actual [$/1hr]', None),
              ('Forecast [$/1hr]', None)])]

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