About us

Who is Next Renewable Generation?

Next Renewable Generation (with a shareholder history as Kayema Energy Solutions and NRG Renew) was founded in 2008 and has become a well-established entity in the South African energy market. Keeping abreast with new technologies and energy solutions, we were named “Energy Company of the Year” by the South African Energy Efficiency Agency in 2010 and nominated for the “Energy Efficiency Project of the Year” in 2011.

From hot water and energy consulting, Next Renewable Generation has further extended its capabilities into the generation space by offering clients the ability to utilize green electricity from a solar PV system without the necessity of Capital Expenditure (“CapEx”). This is done through our flexible and well established Power Purchase Agreement (PPA) offering.

Our know-how and experience is further enhanced by the unique financial and technical advisory support gained from our previous affiliation with NRG Energy Incorporation, based in the United States, who provided the platform for our capability and offering in the African market.


About us

What can we do for you:

With our uniquely skilled team, Next Renewable Generation can support a sustainability strategy that combines various technologies to meet customers’ needs ― our technology-neutral mind-set allows for flexible, adaptable systems. These solutions would be centered around energy management, water management and renewable energy generation projects.

We are able to establish customers’ energy footprints and profiles, utilizing rigour and best practice techniques to ensure that energy solutions are effective and sustainable. This is possible through our core team of professionals. Our team can also provide consulting for water management; improving hygiene, usage and waste streams holistically throughout a site.

Beyond consulting, NrG can offer renewable energy solutions that allow our clients to undertake energy projects such as installing Solar PV without risk and for zero Capex.

BEE Status

Next Renewable Generation Pty (Ltd) currently has a level 4 BEE status. Commercial and industrial projects will be housed in separate “Special Purpose Vehicle” (SPV) where BEE requirements can be tailored.

Our Team

Key Personnel

Dr Dino Petrarolo


PhD Industrial Engineering
Pr. Eng Industrial Engineering

Roger Thompson

Lead Technical/DEPC Manager

Pr. Eng Electrical Engineering
Renewable Energy Professional
BSc Electrical Engineering

Brent Petersen

Business Development Executive

Pr. Eng Electrical Engineering

Dr Bettie Lodolo

Sustainability Consultant

PhD Microbiology
Professor (Associate) at UFS

Douglas Cooper

Electrical Engineer, Project Developer

MSc Electrical Engineering

Samantha Hebler

Admin Manager

Executive Assistant

Monica Hillhorst

Project Developer

BEng – Industrial Engineering

Dr Raymond Lund


PhD Physiology Engineering
BSc Material Science Engineering

We're Hiring


Electrical Support Engineer 2024

Electrical Internship 2024

Industrial Engineer Graduate Intern 2024

Strategic Partners

Next Renewable Generation collaborates with experts throughout the energy and sustainability sector. We can direct you to a list of partners that can assist in various areas such as residential solar installations, water treatment and efficient lighting upgrades. These partners have worked with us before and we are confident that they offer quality service.

Our Strategic Partners

MCP Architects & Arbitrators

MCP is a sustainability based company with over 30 years experience in the industry.

Find them at http://mcparchitects.co.za/

Recognition & Awards


The SANEA 2021 Energy Awards

Education Award  | Upliftment through education

Roger Thompson

Roger Thompson is a Professional Electrical & Renewable Energy Professional (REP). With this background Roger has provided a significant contribution to the Renewable Energy Sector through education in the following ways: -Training clients and energy partners in the sector on Technical design review, construction inspection, commissioning and testing, plant PR testing results review. Endorsement for this work is attached to this submission. -Providing EPC contractor Design Handbook development and training, EPC Contractor Construction site Quality of works training and EPC Contractor Hand-over Pack training for clients and energy partners in the sector. -Training clients and energy partners in industry performance standards such as Assessment and Management of Environmental and Social Risks and Impacts. -Provided training as a guest lecture to students doing Masters in Urban Studies – Sustainable and Energy Efficient Cities.


2021 U.S. Clean Energy Education & Empowerment Award

Law and Finance

Johana Afenjar

Johana Afenjar is an engineer and project finance professional. She was most recently a senior director of capital markets at Clearway Energy Group, where she was the transaction lead in the financing of Clearway’s 140 MW Hawaii portfolio, raising over $500 million in debt, tax equity, and investor capital. She was also instrumental in educating and bringing new capital providers to an emerging asset class: community solar, leading the team in raising nearly $1 billion in financing for more than 500 MW of community solar assets.


Kayema receives SAEE ‘Energy Company Of The Year’ award 2010

South African Association For Energy Efficiency (SAEE) yearly banquet in Johannesburg. Kayema was nominated by Energy Cybernetics as a candidate.

“This is a testament to us for going above and beyond, and is something all our team can celebrate having played their part in winning,” said Kayema GM James Shirley, who accepted the award. The solar water heating system at the Legacy hotel consists of 117 2-kWh flat panel collectors, and is capable of preheating 30 000 l of water before it enters the hotel’s electrical heating system, which is expected to reduce the electricity usage by about 60%.

Do you want to reduce your energy expenses without upfront costs?

NrG’s Zero Capex Solutions allow our clients to pursue their renewable energy projects without risk, and we take care of the price tag.