Asset simulations
Asset simulations show the projected financial and technical performance of a single asset. They run automatically and are stored as versions, so you can always trace which inputs produced which results, revisit past runs, and compare them against the current configuration of the asset.
You can find asset simulations on the Simulation tab of the asset view.
Simulation versions
Whenever you change an asset, its associated PPA, or its scenario, Tensor Cloud automatically starts a new simulation run in the background. While the run is in progress, it is marked as Computing, and its results appear as soon as the run finishes.
Each completed run is stored as a version. A version is a frozen snapshot that contains both the full configuration used for the run and the resulting outputs. Versions never change afterwards, even if you keep editing the asset, and remain available until you delete them.
Selecting versions
Use the version dropdown at the top of the Simulation tab to switch between versions. Selecting a version updates the entire tab, including the summary and all results sections, to that specific run.
The version whose configuration matches the current settings of the asset is marked as Current. This makes it immediately visible whether the results you are looking at reflect the latest state of the asset or an older configuration.
Simulation summary
The simulation summary card shows the run date, the user who triggered the run, the version name, and the version description.
Naming versions
By default, versions are identified by the date and time of the run. To make important versions easier to recognize, open the version actions menu and select Edit version to give the version a name and a description of up to 1,000 characters.
Depending on your workspace configuration, Tensor Cloud automatically fills in the description with a short summary in Japanese of what changed compared to the previous version, for example an increase in capacity or a newly added battery. You can edit or replace the generated description at any time.
Deleting versions
To delete a version, open the version actions menu and select Delete version. Deleting a version permanently removes its results, so the deletion has to be confirmed explicitly. Deleted versions cannot be restored, but a new simulation run is created automatically the next time the asset, its PPA, or its scenario changes.
Comparing configurations
Clicking the Configuration differences button opens a side panel that compares the configuration used for the selected version with the current configuration of the asset. This answers the question "what has changed since this simulation ran?" without having to check each setting manually.
Differences are grouped by settings category and can be expanded and collapsed individually or all at once. For each changed field, the panel shows the value at the time of the simulation run next to the current value. If the selected version matches the current configuration, the panel shows that there are no differences.
The comparison always uses the current configuration of the asset as reference. Comparing two past versions directly is not supported.
Simulation results
Simulation results are shown on a single scrollable page. A side navigation on the left groups the sections into Basics, Electricity, Grid, Solar, Battery, and Financials, and lets you jump directly to each section. Sections for solar and battery only appear if the asset contains the respective component.
Performance overview
This section summarizes the key results of the simulation in KPI cards.
The generation card shows the total energy sold through the site meter over the asset lifetime, the energy curtailed by grid operator order (TSO curtailment), and solar energy held back intentionally to meet FCR obligations (self-curtailment due to FCR).
The financial results card breaks down total lifetime revenues by source: FIT, FIP, PPA, day-ahead market, FCR, and non-fossil certificate (NFC) revenues. It also shows the pre-tax project internal rate of return (PIRR) and the number of ¥0.01 slots on the day-ahead market during the asset lifetime.
Battery performance
For assets with a battery, this section shows key battery results: the number of battery cycles, how much energy was used to charge the battery from the grid and from solar, total battery discharge, the amount of curtailment avoided by storing energy in the battery, and the incremental revenues attributable to the battery.
Electricity flows
This chart visualizes where the electricity produced and stored over the asset lifetime comes from and where it goes: from irradiance and solar generation through losses such as inverter losses, inverter clipping, TSO curtailment, and FCR hold-back, into the battery and through the site inverter, and finally to grid export and import.
Site meter discharge
This chart shows the energy sold through the site meter together with TSO curtailment and self-curtailment over the asset lifetime, in yearly or monthly resolution.
Solar generation
This chart shows the electricity generated by the solar component. Data is summarized from the original 30-minute granularity into yearly and monthly resolution over the system lifetime.
Solar losses
To visually understand how the loss settings influence system performance, this chart shows a waterfall breakdown of each loss factor's contribution, from available irradiance down to the energy delivered at the site meter.
Solar performance ratio
This section shows the performance ratio of the solar system, an established measure for comparing the actual output of a PV system against its theoretical output.
Solar yield
This section shows the first year solar yield and how that yield breaks down over each month, as an easy shorthand for estimating system performance. Annual degradation after year 1 can be set in the asset settings.
Charge and discharge
For assets with a battery, this chart shows battery charging and discharging over the asset lifetime, in yearly or monthly resolution.
Revenues
The revenues chart shows a breakdown of all revenue sources over the lifetime of the asset, such as market, FIP, FIT, and PPA revenues. The chart options allow you to switch between monthly and annual resolution and to exclude specific revenue sources from being shown.
Revenues per kWh
This chart shows revenues normalized per kWh of energy sold, making it easier to compare revenue quality across periods and against other assets.
OPEX
This chart shows all operating expenses over the lifetime of the asset in monthly or yearly sums. You can exclude specific OPEX items from being shown using the chart options.
Net cash flow
The net cash flow chart combines generation, costs, and revenues into one view, showing a simplified P/L statement for the asset. You can switch between monthly and annual resolution and exclude specific items from being shown.
Cumulative cash flow
This chart accumulates the net cash flow over the asset lifetime, making it easy to see when the asset is expected to break even and how much value it generates in total.
Project value
The project value chart visualizes the remaining value of the asset in JPY over its entire lifecycle, based on the net present value of future cash flows and a desired rate of return. You can enter a target project IRR to see how the valuation changes based on different return expectations. Values are calculated by month and update automatically as you adjust the target IRR.
Downloading results
You can download the results of the selected version as a PDF report or as an Excel file using the download buttons at the top of the Simulation tab.