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BESS for load shifting
- Tomás
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18 Jul 2025 11:06 #14164
by Tomás
BESS for load shifting was created by Tomás
Hi,
I would like to know how to simulate a BESS for load shifting, considering that in Chile there is a period of the year where the demand charges are higher but this charges are applied in a certain time range.
The bess would be use to supply the energy in this time range so the industrial client will not require energy from the grid and thus avoid the higher charge.
To calculate the charge it is use the maximum power measurement and the average of the 52 maximum power measurement, both only of the time range
I would like to know how to simulate a BESS for load shifting, considering that in Chile there is a period of the year where the demand charges are higher but this charges are applied in a certain time range.
The bess would be use to supply the energy in this time range so the industrial client will not require energy from the grid and thus avoid the higher charge.
To calculate the charge it is use the maximum power measurement and the average of the 52 maximum power measurement, both only of the time range
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- Paul Gilman
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18 Jul 2025 14:22 #14166
by Paul Gilman
Replied by Paul Gilman on topic BESS for load shifting
Hi Tomás,
One approach would be to use the manual dispatch option (on the Battery Dispatch page) and then set the battery discharge schedule to match the demand charge schedule so that the battery charges and discharges based on that schedule.
Best regards,
Paul.
One approach would be to use the manual dispatch option (on the Battery Dispatch page) and then set the battery discharge schedule to match the demand charge schedule so that the battery charges and discharges based on that schedule.
Best regards,
Paul.
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- Tomás
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19 Jul 2025 17:28 #14167
by Tomás
Replied by Tomás on topic BESS for load shifting
Hi Paul,
Thanks for your answer, I am using the manual dispatch option and it works like I want, but in the electricity rate i don´t know how to use the electricity rates like the Chilean one, because here i need the maximum measurement in a certain time range and to that measurement its applied the charge.
The other charge is one that is applied to the average of the 52 maximum measurement in the time range so i don´t know if i can do this in SAM, but i least i would like to simulate the first charge that i said.
Thanks for your answer, I am using the manual dispatch option and it works like I want, but in the electricity rate i don´t know how to use the electricity rates like the Chilean one, because here i need the maximum measurement in a certain time range and to that measurement its applied the charge.
The other charge is one that is applied to the average of the 52 maximum measurement in the time range so i don´t know if i can do this in SAM, but i least i would like to simulate the first charge that i said.
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- Paul Gilman
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21 Jul 2025 11:18 #14168
by Paul Gilman
Replied by Paul Gilman on topic BESS for load shifting
Hi Tomás,
I think you can model "the maximum measurement in a certain time range and to that measurement its applied the charge" using the "Demand Rates by Time-of-use Periods and/or Tiers" table at the bottom of the Electricity Rates page. When you define a TOU period for demand charges, SAM applies the $/kW charge to the peak kW in that TOU period for each month.
For the charge calculated from the average of 52 measurements, you could calculate that charge by 1) running a simulation to determine the 52 maximum values, 2) calculating the charge based on the average outside of SAM, 3) adding that charge to the Fixed monthly charge input (under "Fixed Charge" at the top of the Electricity Rates page), and 4) running another simulation to calculate the electricity bill and other outputs.
Best regards,
Paul.
I think you can model "the maximum measurement in a certain time range and to that measurement its applied the charge" using the "Demand Rates by Time-of-use Periods and/or Tiers" table at the bottom of the Electricity Rates page. When you define a TOU period for demand charges, SAM applies the $/kW charge to the peak kW in that TOU period for each month.
For the charge calculated from the average of 52 measurements, you could calculate that charge by 1) running a simulation to determine the 52 maximum values, 2) calculating the charge based on the average outside of SAM, 3) adding that charge to the Fixed monthly charge input (under "Fixed Charge" at the top of the Electricity Rates page), and 4) running another simulation to calculate the electricity bill and other outputs.
Best regards,
Paul.
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