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Top Renewable Energy Consulting Companies

Before a company signs a power purchase agreement or puts panels on a warehouse roof, someone has to model whether it pays. Renewable energy consulting firms run that analysis: site and resource assessments, energy yield models, interconnection studies, incentive and tax credit reviews, procurement strategy and owner's engineering during construction. Manufacturers, property owners and developers hire them when a board sets an emissions target, utility costs jump, or a project needs bankable numbers for lenders.

Independent advisers sit here next to developers and installers who also sell systems. Decide which you want, then check each firm's completed studies in your technology: rooftop solar, wind, storage or offsite PPAs.

How this list is built

We evaluate companies on verified profile data: services, pricing, locations, and portfolio. Client reviews are being collected. We may earn a fee for some placements. How we rank and verify

List of the Best Renewable Energy Consulting Agencies

  1. M
    Marine Kinetic Energy
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    The technologies for power generation and energy storage are constantly progressing to meet our growing electricity needs. Visionary engineer Earnest Smith monitored the impact of non-renewable energy sources, such as fossil fuels, on the climate, contributing to greenhouse gas emissions. In 2019, h

    Highlights

    $1,000+

    Min Project Size

    < $25/hr

    Avg Hourly Rate

    2-9

    Employees

    Services Provided
    100% Renewable Energy Consulting
    AI Summary

    “Marine Kinetic Energy develops innovative, cost-effective, emission-free energy harvesting power plants, advancing renewable energy technology to address growing electricity demands sustainably.”

  2. AccuSolar logo
    AccuSolar
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    AccuSolar has more than 20 years of experience in the floating dock sector. By leveraging the advanced technology, superior build quality, and expertise of AccuDock, AccuSolar aims to harness solar energy while minimizing environmental impact. With our background in floating docks, we have collabora

    Highlights

    2-9

    Employees

    Pompano Beach, Florida, Us

    Services Provided
    79% Renewable Energy Consulting
    21% Floating Dock Services
    AI Summary

    “AccuSolar leverages over 20 years of floating dock expertise and advanced technology to deliver innovative, efficient solar energy solutions with minimal environmental impact through key collaborations.”

  3. Bur Oak Resources logo
    Bur Oak Resources
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    Bur Oak Resources is a renewable energy firm providing solar, wind, and various other solutions for customers in Ontario. Our commitment lies in delivering clean, sustainable energy while assisting clients in reducing their energy expenses. Reach out to us today to discover more about our offerings.

    Highlights

    10-49

    Employees

    Greater Sudbury, Ontario, Ca

    Services Provided
    69% Renewable Energy Consulting
    20% Solar Panel Services
    11% Energy & Environmental Services
    AI Summary

    “Bur Oak Resources delivers sustainable renewable energy solutions including solar and wind across Ontario, helping clients reduce costs and embrace clean, environmentally friendly power options.”

  4. Supernova logo
    Supernova
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    Supernova is committed to promoting all 17 UN Sustainable Development Goals (SDGs) by providing innovative solar solutions. By focusing on clean energy, industry advancements, and sustainable infrastructure, we aim to build a better future for the planet. We invite you to join us in our quest to cre

    Highlights

    $1,000+

    Min Project Size

    $150+/hr

    Avg Hourly Rate

    1000-9999

    Employees

    Newport Beach, California, Us

    Services Provided
    65% Renewable Energy Consulting
    35% Solar Panel Services
    AI Summary

    “Supernova advances sustainable development by delivering innovative solar energy solutions, fostering clean energy adoption, industry innovation, and sustainable infrastructure worldwide.”

  5. Unicorn Solar logo
    Unicorn Solar
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    Unicorn Solar is a provider of solar photovoltaic systems, thin-film panels, inverters, and batteries, collaborating with leading brands in the industry. In 2025, Unicorn joined forces with premier Engineering, Procurement, and Construction (EPC) companies to offer operations and maintenance service

    Highlights

    $5,000+

    Min Project Size

    50-249

    Employees

    Folsom, California, Us

    Services Provided
    60% Renewable Energy Consulting
    40% Energy & Environmental Services
    AI Summary

    “Unicorn Solar delivers comprehensive solar photovoltaic solutions, partnering with top brands and EPC firms for system supply, installation, and post-project operations and maintenance services.”

  6. Astrea Energy LLC logo
    Astrea Energy LLC
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    Astrea Energies is dedicated to fostering a more sustainable future by offering dependable, efficient, and eco-friendly energy solutions. We focus on delivering cutting-edge clean energy systems tailored to the changing requirements of residential, commercial, and industrial customers.

    Highlights

    $5,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    50-249

    Employees

    Houston, Texas, Us

    Services Provided
    60% Renewable Energy Consulting
    40% Energy Efficiency Consulting
    AI Summary

    “Astrea Energy LLC provides reliable and innovative clean energy solutions for residential, commercial, and industrial sectors, promoting sustainable and eco-friendly power systems.”

  7. Anaergia logo
    Anaergia
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    Our goal is to speed up the global shift to clean energy by converting waste into renewable fuel, clean water, and fertilizer. We aspire to be the top producer of renewable fuel worldwide, while also minimizing carbon emissions, safeguarding the environment, and ensuring sustainability for future ge

    Highlights

    $1,000+

    Min Project Size

    < $25/hr

    Avg Hourly Rate

    2-9

    Employees

    Burlington, Ontario, Ca

    Services Provided
    50% Renewable Energy Consulting
    30% Waste Management Services
    20% Environmental Consulting
    AI Summary

    “Anaergia advances clean energy by converting waste into renewable fuel, water, and fertilizer, aiming to lead sustainable solutions that reduce emissions and protect the environment globally.”

  8. Grevault logo
    Grevault
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    Welcome to Grevault Energy Solutions, a pioneering leader in sustainable energy. At Grevault, we consider ourselves more than just a business; we are change-makers dedicated to shaping the future of energy through innovation, reliability, and a strong commitment to environmental responsibility. Fou

    Highlights

    10-49

    Employees

    Services Provided
    50% Energy Efficiency Consulting
    50% Renewable Energy Consulting
    AI Summary

    “Grevault Energy Solutions leads in sustainable energy, offering customized, innovative battery storage and grid technologies that deliver efficient, reliable, and environmentally responsible power solutions.”

  9. Radiant Grid Energy logo
    Radiant Grid Energy
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    Radiant Grid Energy is a renewable energy firm dedicated to providing efficient and sustainable power solutions. We focus on solar energy systems, energy storage, and hybrid power solutions aimed at helping businesses, industries, and communities lower energy expenses and enhance reliability. Our te

    Highlights

    $10,000+

    Min Project Size

    $50-99/hr

    Avg Hourly Rate

    10-49

    Employees

    Services Provided
    50% Renewable Energy Consulting
    30% Solar Panel Services
    20% Energy Efficiency Consulting
    AI Summary

    “Radiant Grid Energy specializes in sustainable solar, energy storage, and hybrid solutions, delivering efficient, scalable power systems that enhance reliability and reduce costs for diverse customers.”

  10. Portlandia Electric Supply logo
    Portlandia Electric Supply
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    Situated at 1507 Portland Ave, Portlandia Electric Supply (PES) is your premier supplier of solar energy equipment, focusing on home solar panels, renewable energy products, and residential solar systems. We offer more than 3,800 items from 229 different brands, serving projects of any scale—from sm

    Highlights

    $10,000+

    Min Project Size

    $25-49/hr

    Avg Hourly Rate

    10-49

    Employees

    Services Provided
    49% Renewable Energy Consulting
    41% Solar Panel Services
    10% Equipment Services
    AI Summary

    “Portlandia Electric Supply offers diverse solar energy solutions, including home and industrial systems, extensive brand options, tailored quotes, and reliable logistics for projects of all sizes.”

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Buyer's guide

Hiring Renewable Energy Consulting companies

What the work covers, how to judge a partner and what drives the price.

What renewable energy consultants deliver

Early-stage work is a feasibility study: load profile analysis from interval meter data, site constraints, resource data, system sizing in tools such as PVsyst or HOMER, and a financial model covering capital cost, tariffs, incentives and payback. For larger buyers the scope moves to procurement, comparing onsite generation, community solar, virtual PPAs and green tariffs, then running the RFP and negotiating terms.

Once a project is approved, consultants act as owner's engineer, reviewing designs, interconnection applications and EPC contracts, then monitoring construction and commissioning. Other engagements include due diligence for investors, renewable energy certificate strategy, battery storage sizing for demand charge reduction, and net-zero roadmaps that sequence efficiency upgrades before generation.

Work is sold as fixed-fee studies, monthly advisory retainers or project-phase contracts, and a strategy engagement often runs into an implementation one.

Chapter 1 of 3
FAQ

Renewable Energy Consulting FAQs

Short answers to what buyers ask before hiring a Renewable Energy Consulting company.

Question not covered? Ask our team

A renewable energy consultant assesses whether solar, wind, storage or a power purchase agreement makes financial and technical sense for a site or company, then helps buy, contract and build it. Deliverables include feasibility studies, financial models, RFPs and engineering reviews.

Fees are fixed per study, hourly, or retainer-based, with success fees on some PPA deals. Many listed firms have no minimum, the common floor is $1,000 for screening work, and utility-scale or portfolio engagements start at $100,000 or $250,000.

A solar installer designs, sells and builds systems, so its advice tends to favor its own products. A renewable energy consultant compares options, including not building at all, and represents the buyer in contracts. Some firms listed here do both.

Duration depends on how fast the client supplies utility bills and interval data, how many sites are studied, and whether structural or interconnection reviews are needed. A single rooftop screen moves quickly, while multi-site studies with lender-grade reports take longer.

Houston has the most listed renewable energy consulting firms, and the rest operate from individual cities. Feasibility and PPA work is largely remote, but site assessments and construction oversight require visits, so check the firm's coverage area.

Energy and natural resources companies lead among listed firms, followed by real estate owners, then food and beverage, hospitality, ecommerce and home services businesses, which tend to have large roofs, steady daytime loads or sustainability targets.

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