Engineering Design Sheets.
Instant-download, IEC-compliant Excel tools and templates built for rigorous industrial use.
Every calculation adheres strictly to the latest IEC and IEEE standards.
Trusted by engineers worldwide.
Stop reinventing the wheel with unverified spreadsheets. AEC's design sheets are the exact tools our internal teams use to deliver multi-million dollar infrastructure projects.
Fully Transparent
No locked cells or hidden macros. See exactly how every formula works.
Proven in Production
Used daily by our Tier 1 consultancy team to execute major projects.
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Lifetime Updates
Receive free revisions whenever codes or standards are updated.
All tools available
for instant download.
PV String Sizing Tool
Calculate optimal PV string configuration for utility-scale arrays.
Cable Sizing Calculator
Voltage drop & current-carrying capacity to IEC standards.
Transformer Sizing Sheet
Fast, reliable transformer rating & loss calculations.
BESS Design Calculator
Battery capacity, C-rate & round-trip efficiency sizing.
Load Schedule Template
Standardized load-list template for facility electrical design.
Voltage Drop Calculator
Detailed multi-segment voltage drop analysis.
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