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MEGAJOULE

Independent Portuguese renewable energy consultancy and engineering firm specializing in wind and solar resource assessment, due diligence, and project engineering.

Last updated September 29, 2026

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Overview

MEGAJOULE is an independent Portuguese engineering and consultancy company dedicated to renewable energy, founded in February 2004 by three engineers with experience in wind energy consultancy and wind resource assessment dating back to the early 1990s. The company is privately owned and headquartered in Maia, Portugal. It has established itself as a leader in wind resource assessment in Portugal and Brazil, and operates globally, having assessed over 50 GW of wind and solar projects around the world. MEGAJOULE provides full-scope engineering and consultancy services covering all project stages, from preliminary resource assessment through development, construction, and operation. Its core service lines include resource assessment, engineering, due diligence and feasibility, operation support, and electricity markets analysis. The firm has operated more than 450 met masts for wind assessment or power curve measurement, performed wind and solar resource assessment studies for over 50 GW of capacity, and participated in due diligence processes for more than 10 GW of wind and solar capacity on behalf of clients including developers, investors, and financing institutions. The company's engineering services span the entire development process of wind or solar farms: accessibility evaluation, grid connection analysis, micrositing and layouts, prefeasibility studies, noise impact assessment (wind only), shadow and flicker analysis (wind only), visualizations, basic and main design, technical due diligence, and feasibility studies. It also offers contracting support for TS, O&M, EPC, and BoP agreements, as well as owners engineer, project management, and supervision services. MEGAJOULE's resource assessment practice includes advanced methodologies such as Adopted Time Series, which integrates long-term global solar databases like Solargis with local measurements to improve annual energy yield estimates, and Hybrid Analysis for combined wind-solar projects, optimizing system design and minimizing curtailment. The firm also conducts noise assessments using the DECIBEL noise propagation model within WindPRO software, based on ISO 9613-2 standards. With over 20 years of activity, MEGAJOULE serves major wind and solar PV farm developers, investors, and financing institutions in key world markets. The company remains privately held and continues to operate from its base in Maia, Portugal.

History

MEGAJOULE was founded in Portugal in February 2004 by three engineers with solid backgrounds and experience since the early nineties, particularly in wind energy consultancy and wind resource assessment. The company was established as a privately owned Portuguese firm dedicated to renewable energy consultancy. From its early years, MEGAJOULE focused on wind resource assessment, becoming a leader in that field in Portugal and Brazil. Over more than 20 years of activity, the company expanded its services to cover the full scope of renewable energy engineering and consultancy. It has operated more than 450 met masts for wind assessment or power curve measurement purposes on behalf of clients, performed wind and solar resource assessment studies for more than 50 GW of wind and solar capacity, and participated in many due diligence processes for more than 10 GW of wind and solar capacity, supporting financing or negotiation of wind farm or solar PV farm projects and portfolios. MEGAJOULE's engineering services grew to include the whole development process of wind or solar farms: accessibility evaluation, grid connection analysis, micrositing and layouts, prefeasibility study, noise impact (wind only), shadow and flicker analysis (wind only), visualizations, basic and main design, technical due diligence, and feasibility study. The firm also added contracting support for TS, O&M, EPC, and BoP agreements, owners engineer, project management, and supervision services. In recent years, MEGAJOULE has developed advanced methodologies such as Adopted Time Series for solar energy yield estimates, integrating long-term global solar databases like Solargis with local measurements, and Hybrid Analysis for combined wind-solar projects. It also provides noise assessments using the DECIBEL noise propagation model within WindPRO software, based on ISO 9613-2 standards. The company remains privately owned and headquartered in Maia, Portugal, serving major wind and solar PV farm developers, investors, and financing institutions active in the main world markets.

  • 2004

    MEGAJOULE founded in Portugal in February 2004 by three engineers.

  • Operated more than 450 met masts for wind assessment or power curve measurement.

  • Performed wind and solar resource assessment studies for more than 50 GW of capacity.

  • Participated in due diligence processes for more than 10 GW of wind and solar capacity.

Products and positioning

Independent, full-scope, global renewable energy consultancy and engineering firm; leader in wind resource assessment in Portugal and Brazil.

  • Resource Assessment

    Accurate and bankable resource assessments to support renewable energy investments from preliminary phase up to operational phase.

  • Engineering

    Full development process of wind or solar farms including accessibility evaluation, grid connection analysis, micrositing/layouts, prefeasibility study, noise impact, shadow and flicker analysis, visualizations, basic and main design, technical due diligence, feasibility study.

  • Due Diligence & Feasibility

    Due diligence processes for financing or negotiation of wind farm or solar PV farm projects or portfolios.

  • Operation

    Operation support services.

  • Electricity Markets

    Electricity markets analysis.

  • Adopted Time Series

    Improves accuracy of annual energy yield estimates for solar energy systems by integrating high-quality global solar data from long-term databases such as Solargis with local measurements.

  • Hybrid Analysis

    Essential step in planning and optimizing hybrid renewable energy projects combining multiple intermittent energy sources (e.g., wind and solar).

  • Noise Assessment

    Evaluates noise levels generated by wind farms using the DECIBEL noise propagation model within WindPRO software, based on ISO 9613-2.

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