CHANGES IN BUILD 20251110

• Added option to obtain 1-minute time steps irradiation and wind speed data considering autocorrelation function when importing data from file with time steps between 2 and 30 minutes (before it was only done when importing from hourly file).
• Added option to calculate standard deviation of the autocorrelation function (to calculate 1-minute time steps wind speed) considering Turbulence Intensity (TI) for each original time step: std_dev(t)=TI*wind_speed(t).
• Added option to visualize the wind speed PDF considering minutes steps (before wind speed PDF was only with averaged 1-hour tiem steps).
• Improved calculation of surplus energy (to be sold to the grid) in some cases. It can affect results of previous projects.
• Fixed bug related to default projects (if there exists default project saved by the user).
• Fixed error of previous build when opening the software in some cases («Access violation…»).

CHANGES IN BUILD 20251103

• Added option to import horizontal irradiance in minutes steps (before only allowed tilt irradiance in minute steps).
• Added inertia of the wind turbine (affects the power output depending on the time constant, on the time step duration, on the wind speed and on the previous output power).
• Added option to consider incomes due supplying the AC load, at a specific hourly price, different from the price of the electricity sold to the AC grid.
• Fixed minor bugs

CHANGES IN BUILD 20251001:

• Renewable Ninja resources data acquisition updated.

CHANGES IN BUILD 20250617:

• Fixed minor bugs

CHANGES IN BUILD 20250226:

• NASA changed the format of the irradiation / wind speed / temperature download file. NASA data acquisition has been updated.

CHANGES IN BUILD 20250129:

• For the comparison with AC ONLY systems (which would supply all the load only with AC conventional grid), included the possibilty to add the power cost (previously it was included in the O&M cost of the AC ONLY system).
• Fixed minor bugs.

CHANGES IN BUILD 20250116:

• Fixed bug of error in unmet load in some cases with priority to supply energy not covered by renewables using AC grid.
• Fixed minor bugs.

CHANGES IN NEW VERSION 4.0, BUILD 20241221:

• Added Frequency Containment Reserve (FCR) service by means of batteries (only available in MHOGA).
• Added Capacity Market incomes (only available in MHOGA).
• Improved probability analysis, adding more results variables.
• Fixed bugs in probability analysis in NPV minimizing systems.
• Added more options for PHS to supply reserve capacity.
• Improved calculation speed.
• Fixed minor bugs.

CHANGES IN BUILD 20241107:

• Now minimum number of diesel generators in parallel can be 0.
• Total tax for electricity sold now is used to reduce electricity incomes due to selling electricity to the grid (before it was considered to increase incomes). Projects created with previous versions, when opened, will have the sign of this data changed, so that the results are not modified.
• In the report, added percentage of total load energy self-consumed.
• LCOE now has 4 decimal positions.
• Added LCOH and LCOS results in the Excel file of the costs.
• In NPC optimization systems, added calculations of annual savings and IRR of the savings (comparing our system with the system to supply all the load only with AC grid) in the Excel file of the costs.
• In NPV optimization systems, added calculations of IRR in the Excel file of the costs.
• In NPC optimization systems, added the possibility to optimize by maximizing the IRR of the savings (comparing our system with the system to supply all the load only with AC grid).
• Added the possibility of considering the loan in payback calcualtions (before it was not considered).
• Added the possibility of considering the loan in IRR calcualtions (before it was not considered).
• Improved calculation of the pump efficiency (if variable pump efficiency)
• Fixed bug when in particular cases when using variable losses in hydraulic pipelines using Haaland equation for Colebrook approximation.
• Fixed bug when considering minimum time of running the backup generator.
• Fixed bugs in the calculation of payback period in the case of multiperiod.
• Fixed bug when calculating E back-up charge (self-consumed energy) in grid-connected sytems with batteries.
• Fixed minor bugs.

CHANGES IN BUILD 20241003:

• Fixed bug when calculating Export (excess) energy in some cases when charging batteries due to the grid limitation.
• Added losses in wire and transformer in Energy purchased to the grid (if the user selects this option).
• Subtracted losses in wire and transformer in Export energy and in Bach-up charge energy (if the user selects these options).