Cossack Energy COSSACK ENERGY Contacts
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Independent adviser · renewable energy

We create opportunities, we build solutions.

Cossack Energy understands which solutions belong in the power system, when, and in what way — raising its reliability and lowering the cost of energy.

Power system diagram: generation, grid and storage, consumption
Digital “8760” modelling of the financial viability of energy projects
Ukraine’s power system

The right solution is the basis of the result.

A solution can remove a problem — or create new ones. Only the right combination of conditions and the right choice of solution let a project be built and reach its actual goal.

How the power system works and what it means for you
THE NATURAL ADVANTAGES OF RENEWABLE ENERGY
  • Independence: generated where it is consumed.
  • Price predictability: the cost sits in construction. Once built, the plant’s cost of energy is predictable and falls over time.
  • Economics: no fuel cost, an available resource and mature solutions together create the economic advantage.
WHAT YOU NEED TO UNDERSTAND ABOUT ENERGY

Stability

A power system must be reliable above all. Electricity supply is the foundation of modern life, and losing it is always critical. Reliability is one of the system’s core requirements.

Balance

The balance of the system is the synchronisation of generation and consumption: in every single moment, the electricity produced must equal the electricity consumed. That is the ideal balance. In practice, holding that equality is one of the hardest tasks there is — demand moves every second, and large volumes of electricity are difficult to store.

Economics

New solutions must be better than the ones they replace. Market viability and competitiveness are the very foundation on which it makes sense to invest in energy projects.

“8760”

Hours in the model of every project

1500+

MW under development

3

Cities and communities in progress

15

Years in the market

What we do

Five practices, one logic

01

Consulting

What to implement, how, when and at what cost. Our clients get clear answers backed by a calculation they can verify, so they make grounded decisions and reach the result they are after.

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02

Energy for Cities

Cities and communities are how society is organised. Their energy security is a critical precondition of national resilience. We believe the decentralised power system of the future must be built around cities and communities — so we created a dedicated practice for energy security and savings where it matters most.

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03

Energy for Communities

Rural and settlement councils live with the same problems as cities. But because of their smaller scale they get far less attention from the market. We remove that imbalance: we match the solution to the community’s actual need, find the money for it and see it through.

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04

Renewable Development

We know which projects hold economic and system value, and we develop those. Development is not speculation. Development is preparing for where the market will be tomorrow.

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05

PPA & Offtake

Investment needs a guaranteed offtake. Consumers need to know how to manage long-term power purchase risk and stay competitive. With expertise in both investment and power trading, we bring consumer and generator together and structure the deal to work for both sides.

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Founders

Who you work with directly

Yevhen Artyomov

Yevhen Artyomov

CEO10 years of experience

ay@cossackenergy.com

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Yevhen has over 10 years of experience in the development and implementation of energy projects. He is an expert in modelling corporate PPAs.

Leonid Tkachuk

Leonid Tkachuk

Managing Partner15 years of experience

lt@cossackenergy.com

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Leonid has over 15 years of experience in developing and bringing energy projects to market. He is an expert in digital modelling of energy projects.

News & insights All materials
04.09.2026News

New website published

We have published the new site: our practices, a presentation for each of them, and teasers for the development projects — all downloadable as PDFs.

Contacts
Phone +380 68 833 7309 Email info@cossackenergy.com
Address 24 Kyivska St, Sofiivska Borshchahivka 08131, Ukraine