Three years ago, if someone wanted solar panels, they Googled "solar companies near me" and clicked through the listings. Today, they're more likely to ask ChatGPT, "Should I switch to solar given my state's incentives and my current energy bill?" The difference isn't small. It's a complete shift in how people search, what they expect to find, and, critically, how you need to show up.
For clean energy companies, this means a growing share of buyer research happens where search rankings count for less.
Generative Engine Optimization (GEO) is the work of making your content and wider online presence easy for AI tools to find, trust, and cite. That includes ChatGPT, Google's Gemini and AI Mode, Claude, Perplexity, and Microsoft Copilot. All of them write an answer instead of returning a list of links.
Energy buyers rely on these tools because the decisions are technical and expensive. A homeowner wants to know how a heat pump copes with a cold winter. A facility manager wants to know the payback period on a battery system and the grid rules that apply to it. They ask AI first. If your content is what the answer is built on, you've shaped their thinking before they reach your contact form.
Search optimization now works across three systems. They overlap, but each one targets a different place where buyers find you.
Search Engine Optimization (SEO) gets your pages ranking in Google and Bing. It still drives traffic, and AI assistants pull many of their sources from search indexes, so it remains the foundation.
Answer Engine Optimization (AEO) targets answers shown on the results page itself, such as featured snippets and Google's AI Overviews. Clicks are harder to earn there. In a 2025 analysis, Pew Research found that people clicked a regular search result on 8% of visits when an AI summary appeared, compared with 15% when there wasn't one.
Meanwhile, Generative Engine Optimization (GEO) influences how AI tools like ChatGPT, Claude, and Perplexity cite your content when generating responses. Rather than competing for rankings, GEO is about being recognized as an authoritative source worth referencing.
For a while, marketers debated whether GEO was really different from SEO. The data suggests there is a meaningful difference. When people ask ChatGPT, Gemini, Copilot or Perplexity a question, only about one in eight of the cited pages rank in Google's top 10 for that query.
The original GEO study, peer-reviewed and presented at KDD 2024, found that adding statistics, expert quotes and references lifted a page's visibility in AI answers by up to 40%. Keyword stuffing was ineffective.
SEO still matters. Ranking gets you considered. It just doesn't get you chosen. That's why we don't treat it as SEO versus GEO at Inquill. We build whatever mix brings in inquiries from the right buyers and drives revenue. If a tactic looks good on a dashboard but doesn't do that, it doesn't make our priority list.
1. Answer first, then go deeper. Open each page or section with a plain, direct answer. Then back it up with how the technology works, what it costs, and where it isn't a good fit. The short answer wins snippets and AI Overviews. The depth earns citations from assistants.
2. Publish what only you can. Publish performance data from your own installations, case studies with real numbers, and your engineers' take on a new grid code. The GEO study found that AI tools favor statistics, quotes, and named sources.
3. Keep content current. Pages cited by AI assistants are, on average, about a quarter younger than those ranking on Google. In energy, old pages are often just wrong. Any US guide still promising homeowners the 30% federal solar tax credit is out of date, since the One Big Beautiful Bill Act ended the credit for qualifying property placed in service after December 31, 2025. Review incentive, pricing, and regulation pages every quarter.
4. Get talked about elsewhere. How often a brand is mentioned across the web tracks AI Overview visibility far more closely than backlinks do. Reviews, trade press, your team's LinkedIn posts, Reddit threads and industry directories all feed into this.
5. Explain things the way a specialist would. Define each technical term precisely the first time you use it, then stick to one name. If one page says "BESS", another "battery storage", and a third "energy storage system", readers and AI tools must guess whether you mean the same thing. Open long guides with a short summary, use headings that match buyers' questions, and put comparisons in tables. Schema markup helps search engines read your company details, but it won't raise AI citations on its own. Keep FAQ sections for readers, even though Google dropped FAQ rich results in May 2026.
You don't need the biggest budget to show up in AI answers. In the GEO study, lower-ranked pages gained the most. One page ranking fifth more than doubled its visibility in AI answers once it started citing sources.
That gives smaller installers and clean-tech companies a way in. People buying solar, storage or heat pumps want a company that knows the technology and is honest about the costs. If AI tools keep pointing to your content for those answers, buyers are already familiar with your expertise when they get in touch. Pick the ten questions your buyers ask most, and answer each one better than anyone else does.
Take those ten questions and put them to ChatGPT, Perplexity and Gemini. Note which companies get recommended, check again every month, and track this separately from your SEO reports.
Inquill works with clean-tech companies, so we already know what your buyers ask and how they decide. If you'd like to see how your company shows up in AI search today, and what it would take to become the answer, get in touch with our team.
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