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Wind, solar, storage and back-up system designer

Peak demand, wind, solar and back-up power / energy usage and storage capacity calculator

For the specification and design of renewable energy electricity generation systems which successfully smooth intermittent wind and solar generation to serve customer demand, 24 hours a day, 7 days a week and 52 weeks a year.

Adopting the recommendations derived from scientific computer modelling, the tables offer rows of previously successful modelled system configurations - row A, a configuration with no back-up power and rows B to H offering alternative ratios of wind and solar power to back-up power.

The recommended energy storage capacity is about 90% of one day's average wind and solar energy generation.

The tables' columns consist of adjustable power and energy variables.

A cell value can be adjusted according to the design criteria and then all the other table values will be recalculated, spreadsheet-style.

The wind and solar power generation Capacity Factor (C.F.) percentages can be adjusted too.

The energy generation percentages from wind and solar power can be adjusted, either directly or according to the latitude of the system.

A configuration text page for a row which has been adjusted and designed satisfactorily can be opened for text output by clicking on the row’s “TXT” icon in the “Open text page” column.

The recommendations derived from modelling are only specified to 2 significant figures so take with a pinch of salt any apparently third “significant” figures in the numbers output in the configuration text pages.

Grid Watch Demand
Focus Table
  Peak demand
      units:
Daily Usage
MWh
Wind power MW  Solar power
% Capacity Factor %
Storage
MWh
Back-up power
MW
Open
text page
Row Generation : % Ratio Latitude
A 
B 
C 
D 
E 
F 
G 
H 

Wind Generation Capacity
Focus Table
Row  Peak demand
      units:
Daily Usage
MWh
Wind power MW
Capacity Factor %
Wind energy
per day - MWh
Storage
MWh
Back-up power
MW
Open
text page
A  
B  
C  
D  
E  
F  
G  
H  

Off-grid daily usage
Focus Table
Daily Usage (max)
units:
Wind power W  Solar power
% Capacity Factor %
Wind + Solar
Wh per day
Storage
Wh
Back-up power
W
Open
text page
Row Generation : % Ratio Latitude
A  
B  
C  
D  
E  
F  
G  
H  

Energy Storage Capacity
Focus Table
  Peak regeneration
      units:
Recharge pump MW
recharge/regen %
Daily Usage
MWh
Wind, Solar etc.
MWh per day
Storage
MWh
Back-up power
MW
Open
text page
A  
B  
C  
D  
E  
F  
G  
H  

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The Scottish Scientist web-site in association with the Scottish Scientist Blog at WordPress.Com