Simple per-seat pricing.
EI Portal is sold as named-seat subscriptions for business and professional use. The platform is currently in invite-only beta — paid subscriptions open at launch. Prices below are launch pricing.
Foundation
Free with an account
- 24 of the 55 tools — core electrical calculators
- Worked presets and guided examples
- Project values: capture results and carry them between connected tools
- Reference resources and articles
Professional
£19.99 per user / month
or £199.90/year — 2 months free
- Everything in Foundation
- 41 of the 55 tools — the design and analysis library, including cable selection, voltage drop, earth fault loop, maximum demand, arc flash (IEEE 1584), earthing grid and step/touch (IEEE 80), lightning protection (BS EN 62305), CT selection and CT saturation
- Branded project report export, with the calculation basis, assumptions and source-run provenance for every captured value
Specialist
£49.99 per user / month
or £499.90/year — 2 months free
- Everything in Professional
- All 55 tools — adding the 14 specialist protection & studies suites: overcurrent & earth fault, distance, line differential, transformer differential, busbar, generator, breaker-failure, thermal overload, rate-of-change-of-frequency, grading coordination, transformer fault-flow simulation, COMTRADE event analysis, transient stability and IEC 61850
- Vendor-referenced relay behaviour built from published manufacturer documentation, with the scope and limits of each study stated in the tool
- Built for protection engineers and studies teams
Good to know
- Named seats — one subscription per user; seats can be reassigned when people change.
- Cancel any time — plans run to the end of the paid period, and a reminder is sent before each renewal. See the Refunds & Cancellations policy (14-day money-back guarantee on first purchase).
- Business use — EI Portal is sold to business and professional users; outputs are engineering working material requiring independent verification. See the Disclaimer.
- Beta testers — active beta participants may be offered a thank-you period of Professional at launch, at our discretion and confirmed with you directly. See the Beta Programme Terms.
- How you pay — our order process is conducted by our online reseller Paddle.com. Paddle.com is the Merchant of Record for all our orders.
Want in before launch? Register your interest and we'll be in touch about beta access.