Project Costs

2 posts / 0 new
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rzutshi
Tiered Rate Schedule

I've got SAM mostly figured out but I have a slightly different rate schedule - it's independent of day, month and time but is a tiered charge based on monthly consumption as shown below:

Monthly Consumption Rate
0-30 kWh 0.05$/kWh
30-100 kWh 0.07$/kWh
101-200 kWh 0.1$/kWh
>200 kWh 0.12$/kWh

(This is for a country in Asia so the rates are fairly low).

Can I and how would I implement this rate schedule for monthly consumption?

Thanks!

6 posts / 0 new
Last post
yunling.li
Isolated or independent PV-systems

Hello!
I'm doing a project about PV-residential/commercial taking Piura,Peru region as a reference and I'm analyzing how the project will change if enable battery; but I don't know how to set up that the battery only load from the system.
Also, I know the program simulate different projects that are conexion to the grid and when there are excess generation,these energy is injected to the grid. However, in Peru can not perform the same.

4 posts / 0 new
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pedroaquino
pedroaquino's picture
Combine Cases Macro doesn't work anymore.

Good day, beloved fellows of the SAM community.

Recently a accepted the update for a brand new SAM's version (sam-windows-2017-9-5-r4) and now all my analyses using the Combine Cases Macro has stopped to work. The System Costs information that used to be imported from the other cases as a negative value at the year 0 now it is zero and the financial analyses results as payback period, Levelized LCOE (real and nominal) has came as zeros.

Does anyone have the same problem as me?

Thanks for the attention.

2 posts / 0 new
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TymB
Negative NPV in PPA

Hi,

I'm new to SAM and third party Power Purchase Agreements for Solar PV.

Is there anything else than the first year PPA price which would change the NPV of a project to be negative? Currently my NPV is -$145,000 with $0.125/kWh. If I bring the 1st year PPA price to $0.06/kWh NPV is $32,311.

I'm also confused why there is no simple payback.

Please Help

Thanks!

4 posts / 0 new
Last post
sakha1370
Why is solar field cost equal for all solar systems?

Dear SAM Community,
Hi, I have a few questions.
In the "(2015) Parabolic Trough Collector Cost Update for the System Advisor Model (SAM)",
1) The difference "HTF System ($/m^2)" old value cost of "Molten Salt Linear Fresnel Model" and "Direct Steam Linear Fresnel Model" is understandable but why "Solar Field ($/m^2)" old value cost is different for them?
2)why "Solar Field ($/m^2)" new value cost is equal for all solar systems(PTC, LFR, CSP Power tower)?

Your quick response is highly anticipated.
My best regards.
Sadegh.

2 posts / 0 new
Last post
cspchathu
System cost

Dear all,
What is the most suitable way to decide the inputs for system cost page and financial parameters page?
Is it ok, if I take values from SAM 2010 Parabolic Trough Cost Model.xlsx sheet provided in the link https://sam.nrel.gov/cost after entering appropriate data in to "input value" area of Project Plant Data. Either input by hand or from SAM via Excel Exchange? the edited excel sheet is attached for your reference.

3 posts / 0 new
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Achilles11
Payback Period metric for PPA analysis

Hi,
Why doesn't my analysis of a commercial PPA system have payback period as a financial metric output? It does have IRR as an output. The project does involve debt.
Thanks!

6 posts / 0 new
Last post
Achilles11
Parametric analysis of PV and battery configurations

Hi,

I'm attempting to determine the most financial beneficial configuration of net metered PV and battery capacity. This will be a municipally owned system, so various tax incentives won't apply. Also, the project is half-funded through a federal grant and the other half is a low-interest loan, so to account for the grant funding I've used a negative value (-65%)for the project contingency in System Costs to arrive a portion of the project cost that is covered by the loan.

2 posts / 0 new
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Achilles11
PPA Project Debt and Partial Grant Funding

Using PVWATTS Single Owner PPA, the scenario I'm trying to model is a municipally owned 1MW PV system selling power to an electric utility under a PPA. Being a public project, I assume the municipality wouldn't be taxed on revenue, and couldn't depreciate the system, etc. The project is half grant funded and half low-interest loan. I'm trying to figure out the PPA price break-point where the project still makes financial sense.

1 post / 0 new
Paul Gilman
Cost Data for Power Tower

I've simulated a CSP central receiver plant. My question is: Are all the default economic values (already filled), trustable values for a simultaion in the US country? Can I trust IRENA 2012 (Cost Analysis of Concentrating Solar Power) for the economic values? I wonder if I could know the best source of information from you to fill the economic data.

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