The Professional bundle
All five courses in one purchase, at one price. The same lectures, the same updates and the same lifetime access as buying them one at a time.
What is in it
- Grid-Scale Battery Energy Storage (BESS): Complete Guide Available now
- How a Battery Gets Paid Available now
- BESS Engineering Foundations Pre-order — lands by the end of September 2026
- BESS Warranties, LTSA & Performance Testing Pre-order — lands by the end of November 2026
- Fire Safety for Battery Energy Storage Systems Pre-order — lands by the end of December 2026
Grid-Scale BESS: The Complete Guide is the foundation course; the other four go deep on one area each. Each also sells separately — the specialists right here, the Complete Guide on Udemy today — and the bundle exists because most people working on a real project end up wanting more than one.
What you save
What the bundle costs against buying the five courses one at a time, both at today's early-bird prices and at their full prices. Amounts are resolved for your own region.
One purchase, five enrolments
Buying the bundle enrols you in all five courses at once. There is no code to redeem and nothing to claim course by course: your access link arrives by email within minutes of payment and signs you into your classroom at learn.bess.courses, where each course appears — and if one ever fails to appear the others are unaffected.
The email you enter at checkout receives the access link and becomes the student account. Buying for someone else? Enter their email at checkout — or write to sergey@bess.courses for multiple seats.
When each course arrives
Released courses are yours immediately. The courses still in production each open their course space at purchase, and full content lands by the end of September 2026 (BESS Engineering Foundations), November 2026 (BESS Warranties, LTSA & Performance Testing) and December 2026 (Fire Safety for BESS).
Full refund on the whole bundle any time until September 30, 2026. This is the bundle's own term — it replaces the per-course refund-until-release promise for courses bought as the bundle. How early bird works.
Note the trade-off: Fire Safety for BESS and BESS Warranties, LTSA & Performance Testing land after that refund window closes. Bought separately, each stays refundable until its own release — if that term matters more to you than the bundle price, buy those courses individually.
The bundle's early-bird price ends September 30, 2026 (11:59 PM UTC) — the same date the refund window closes; the same instant, in your own time zone, is shown with the savings above. The exact amount for your region is in the table above, and checkout states both again before any payment is taken.
Certificates: the Complete Guide issues a certificate of completion (verifiable at bess.courses/verify); each specialist course states its own certificate status on its course page.