The core course
206 lessons · 11 modules · 14h 38m of video
Grid-Scale Battery Energy Storage (BESS): Complete Guide — the one course that covers the whole system. See the syllabus.
Platform record · reviewed
Every figure we publish, and where to check it.
BESS.courses is a training platform for grid-scale battery energy storage, with a free technical reference anyone can read. These are the figures it publishes about itself: what each one counts, where to check it, and when it was last checked.
Explore the core course See the full register Press kit and deck
- 2,500+ students
- Enrolled on the Grid-Scale BESS course on Udemy — the only one of the 5 sold there. Read from the live Udemy listing on Aug 22, 2026. The Udemy profile (opens in a new tab)
- 16h 59m released
- Video runtime you can watch today. All 5 courses together come to ~29h 44m once the rest are released. Summed from each course’s own published runtime. The catalogue
- 255 glossary terms
- The free BESS reference vocabulary, each with the numbers that go with it. The glossary
01 / Who is learning
The course has students in 127 countries.
India and the United States account for 4 in every 10; the rest are spread across Europe, the Gulf, Africa, Latin America and south-east Asia, down to 29 countries with a single learner in them.
- India 721
- United States of America 354
- Germany 146
- United Kingdom 111
- Canada 102
- Australia 85
- Brazil 76
- Mexico 56
- Pakistan 44
- South Africa 39
- Philippines 38
- Spain 38
The other 115 countries — 30% of all students
- Turkey 38
- United Arab Emirates 37
- France 35
- Egypt 32
- Italy 29
- Japan 29
- Greece 26
- Nigeria 25
- Indonesia 21
- Saudi Arabia 21
- Netherlands 20
- Singapore 20
- Morocco 19
- Malaysia 18
- Sweden 17
- Chile 16
- Israel 15
- Poland 15
- Peru 12
- Romania 12
- Hungary 11
- Vietnam 11
- Argentina 10
- Bangladesh 10
- Denmark 10
- Jordan 10
- Colombia 9
- Portugal 9
- Ukraine 9
- Belgium 8
- Bulgaria 8
- Hong Kong 8
- Austria 7
- Finland 7
- Nepal 7
- Sri Lanka 7
- Zambia 7
- Iraq 6
- Kenya 6
- New Zealand 6
- China 5
- Serbia 5
- Switzerland 5
- Thailand 5
- Tunisia 5
- Guatemala 4
- Ireland 4
- Kazakhstan 4
- Mauritius 4
- South Korea 4
- Taiwan 4
- Uruguay 4
- Uzbekistan 4
- Brunei 3
- Costa Rica 3
- Croatia 3
- Czech Republic 3
- Ecuador 3
- Ethiopia 3
- Lebanon 3
- Oman 3
- Rwanda 3
- Slovakia 3
- Venezuela 3
- Zimbabwe 3
- Albania 2
- Benin 2
- Bolivia 2
- Bosnia and Herzegovina 2
- Cambodia 2
- Estonia 2
- Georgia 2
- Ghana 2
- Kuwait 2
- Lithuania 2
- Moldova 2
- Myanmar [Burma] 2
- Namibia 2
- Norway 2
- Palestinian Territory 2
- Panama 2
- Puerto Rico 2
- Qatar 2
- Senegal 2
- Slovenia 2
- Somalia 2
- Algeria 1
- Andorra 1
- Aruba 1
- Azerbaijan 1
- Bahrain 1
- Belize 1
- Burkina Faso 1
- Cameroon 1
- Chad 1
- Cyprus 1
- Democratic Republic of the Congo 1
- Dominican Republic 1
- El Salvador 1
- Haiti 1
- Ivory Coast 1
- Jamaica 1
- Latvia 1
- Luxembourg 1
- Macedonia 1
- Mali 1
- Malta 1
- Martinique 1
- Mongolia 1
- Montenegro 1
- Mozambique 1
- Paraguay 1
- Sierra Leone 1
- Uganda 1
- Yemen 1
02 / What it teaches
Battery storage is a system. The curriculum follows it.
The path runs from cell behaviour to the revenue a finished asset earns, and every layer is taught in the context of the decisions that connect it to the next one.
- Cell chemistry, ageing and what a datasheet really promises
- Module & rack assembly, balancing, thermal paths
- Container layout, fire strategy, siting and spacing
- PCS conversion, voltage windows, real power limits
- Controls setpoints, droop, grid-forming behaviour
- Grid codes, compliance and connection conditions
- Market what the asset is paid for, and by whom
Released across the platform
232 lessons · 21 modules · 16h 59m of video
2 of 5 courses released. Runtime means published video, not estimated study time, and unreleased lessons are not counted. All 5 together come to ~29h 44m once the rest are out.
16h 59m published of ~29h 44m planned
| Course | Status | Runtime | Size |
|---|---|---|---|
| Grid-Scale Battery Energy Storage (BESS): Complete Guide | Released | 14h 38m | 11 modules · 206 lessons |
| How a Battery Gets Paid | Released | 2h 21m | 10 modules · 26 lessons |
| BESS Engineering Foundations | In production — by the end of September 2026 | ~5h | 11 modules · 99 lessons |
| BESS Warranties, LTSA & Performance Testing | In production — by the end of November 2026 | 4h | 13 modules · 49 lessons |
| Fire Safety for BESS | In production — by the end of December 2026 | 3h 45m | 12 modules · 39 lessons |
03 / The open layer
The reference layer is free, and it is specific.
255 glossary terms, 66 digitised grid codes across 44 countries and 58 electricity markets, none of it behind a sign-up. Every record names the standard, clause or document it came from — three of them, as they stand today:
Glossary entry
UL 9540A
A test method that characterizes thermal-runaway fire propagation in a BESS; informs spacing and protection.
- Standard type
- Test method (fire propagation characterization) — not a certification, not a code
Sources: UL 9540A Test Method — UL Solutions (opens in a new tab), NFPA 855 — Standard for the Installation of Stationary Energy Storage Systems (opens in a new tab) · reviewed
Grid-code claim
Denmark (TR 3.3.1)
RoCoF withstand: ±2 Hz/s at the point of connection, without disconnecting or shutting down; per Figure 3, RoCoF is calculated from two 200 ms frequency-averaging windows offset by 20 ms (df/dt = (average value 2 - average value 1)/0.020)
11.-(1) Energy storage facilities 0.8 kW or larger in size must be able to withstand transient frequency gradients (RoCoF), calculated according to the method in Figure 3, of up to ±2 Hz/s in the point of connection, without disconnecting from the POC and without shutting down.
Section 11(1), Figure 3 of Technical Regulation 3.3.1 - Revision 6: Requirements for Energy Storage Facilities (English translation) (opens in a new tab) · read
Market service
Great Britain electricity market
Dynamic Containment — Rapidly contain frequency after a fault at the edge of the operational range.
- Full activation
- 1 s
- Sustain
- up to 15 min
Dynamic response services: DC, DM and DR (opens in a new tab) — National Energy System Operator · current as of
04 / Learner evidence
What professionals wrote, and what the wider rating shows.
Engineers, project managers and consultants who took the course and wrote about it under their own names. Every quote here links to the post it came from.
Very solid course for anyone looking to learn more on topics ranging from cell chemistries, battery supply chain, PCS, BMS, technical specs, BESS controls, grid forming vs following inverters, various revenue streams and PPAs, what makes a project “bankable” and understanding the various risk allocations and financial structures. Working primarily in sales/biz development I really appreciated the level of technical detail that was presented in addition to the deep dive into the commercial and financial aspect of the BESS market.
- Vivek Anand From commissioning turbines to how BESS projects actually work
- Sagar Kansara Engineering, compliance and finance in one language
- Chandan L S Bridging cell-level work and system-level design
30 named reviews in the library, each linked to the post it came from. Read them all.
05 / The register
Every figure, and what keeps it true.
Unless a row says otherwise, a figure is recomputed from the site's own data every time the site is published. The ones that depend on somebody else's page — or on data vendored in from one — say so, and carry the date they were read.
| Figure | What it counts | Check it |
|---|---|---|
| 2,500+ students | Enrolled on the Grid-Scale BESS course on Udemy — the only one of the 5 sold there. Read from the live Udemy listing on Aug 22, 2026. | The Udemy profile (opens in a new tab) |
| 4.6 / 5 | From 500+ public ratings on that same Udemy listing. Ratings, not written reviews — the two are counted separately here on purpose. Read from the live Udemy listing on Aug 6, 2026 — the count of ratings on Aug 22, 2026. | The Udemy profile (opens in a new tab) |
| 127 countries | Where the Grid-Scale course's students are, as Udemy's instructor analytics report it. They read in 17 languages; the course is taught in English. Read from the live Udemy listing on Aug 28, 2026. | The Udemy profile (opens in a new tab) |
| $20–25 USD | Udemy's typical price for the Grid-Scale course with its rotating coupons — the only one of the 5 sold there. The specialist courses are one-time purchases, priced in your own currency at checkout here. A typical range across Udemy’s rotating coupons, not a quoted price. | The Udemy profile (opens in a new tab) |
| 30 named reviews | Engineers, project managers and consultants who wrote about the course on LinkedIn, under their own names. Every one is linked to the original post. | The review library |
| 255 glossary terms | The free BESS reference vocabulary, each with the numbers that go with it. | The glossary |
| 66 grid codes | Digitised from the published codes across 44 countries, every curve stating its source. Recomputed on every build from the ride-through atlas on bess.engineer, synced Aug 11, 2026. | The grid-code atlas |
| 58 electricity markets | How a battery earns in each one, market by market. Recomputed on every build from the market catalogue, whose research closed Aug 4, 2026. | The markets atlas |
| 8 standards × 4 markets | 8 of the 11 standards in the certifications register carry a row for each of the 4 certification markets. 32 claims, each with its source recorded. | The certifications hub |
| 14h 38m | The core course: 206 lessons across 11 modules. Taken from the course’s own published curriculum. | The course page |
| 16h 59m released | Video runtime you can watch today. All 5 courses together come to ~29h 44m once the rest are released. Summed from each course’s own published runtime. | The catalogue |
| 2 of 5 released | The rest state their completion window up front and are refundable any time until release. | The catalogue |
A figure marked with a plus is rounded down, never up, so the real number is at least the one printed here. If a figure disagrees with the page it links to, trust the page it links to and tell us at sergey@bess.courses — we would rather hear it from you than leave it standing.
Apparatus
How to describe us, and where each claim lives.
Approved boilerplate, so a programme note, a press or media enquiry, or a partner page does not have to invent its own. The name is written BESS.courses — capital BESS, lower-case courses, no space. The site is operated by Evolve Energy Consulting Inc.
Short
BESS.courses is a training platform for grid-scale battery energy storage, built and taught by an engineer who ships the projects he teaches from.
Long
BESS.courses teaches grid-scale battery energy storage the way it is actually built — from cell chemistry and power conversion through fire safety, grid codes and the revenue a battery earns. It is structured in three layers: a free reference used by engineers worldwide, one core course covering the whole system, and specialist deep dives for the decisions engineers, developers and asset managers actually have to make.
The instructor
Sergey Syrvachev is Director of Product Engineering at HyperStrong, a grid-scale BESS integrator, and has worked in energy and product engineering since 2010 and in battery storage since 2020. He holds PMP, PSM I and PSPO certifications and a Lean Six Sigma Black Belt, and is a LinkedIn Top 1% Energy Voice. Full background and verification links are at bess.courses/about.
The deck
15 slides on how the platform is built and taught, exported . Its figures are a snapshot of that day and it states a few the site does not carry. Where the deck and the register disagree, the register is right.
Press and partner enquiries, and corrections to anything on this page: sergey@bess.courses.
LinkedIn (opens in a new tab) YouTube (opens in a new tab) bess.engineer (opens in a new tab) About the instructor
Where each claim lives
Each of these subjects is argued in full on its own page. If you are quoting one, quote it from there.
- Why the pricing is what it is The affordability argument, in full.
- What makes the courses different The comparison against the alternatives.
- The free reference layer Glossary, grid codes, markets, tools — no sign-up.
- The catalogue What is released today and what is in production.
- The learning path How the core course and the deep dives fit together.
- The review library Every named review, linked to its original post.
- Training for teams The corporate offer, seat model and onboarding.
- Who we work with Faculty, platforms and publication venues.
- The instructor Background, credentials and where to verify them.
- Certificate verification Every certificate issued here carries its own number, checkable without an account.
See what the numbers add up to.
The core course covers the whole system in 14h 38m. The reference layer stays open whether you take it or not.
Explore the core course Browse the open library See how the courses fit together