Hg Takes Majority Stake in Renewables Software Firm 3E

Hg, the software and services-focused investment firm, has acquired a majority stake in 3E, the Belgium-based renewable energy software and technical advisory provider, from India-based renewable energy developer and operator ReNew and minority shareholders.

The deal puts a 26-year-old company — founded in 1999 as a spin-off of research organization IMEC — under new ownership, with its founding and management team retaining a stake. Climate-focused investor Galvanize Climate Solutions joins Hg as a minority co-investor.

For an industry that increasingly runs on operational data rather than nameplate capacity, the transaction is about who controls the systems of record for solar, wind and battery storage portfolios.

What does 3E actually do?

3E operates on two legs. The advisory side provides energy yield assessments and technical due diligence for renewable energy projects — the engineering work that sits behind project financing and acquisition decisions.

The software side is SynaptiQ, a platform that lets owners and operators of solar, wind and battery storage assets monitor performance, track revenue and identify operational inefficiencies. Think of it as the metering and analytics layer for generation portfolios: not just reporting what a plant produced, but diagnosing why it underperformed against model.

Where is the capital going?

Hg laid out three uses for the investment.

• SynaptiQ development, including integration of operational, weather and market data, and the combination of physics-based models with AI to optimize portfolio performance and revenue.
• International expansion, with the U.S. singled out as the priority market.
• Potential acquisitions to broaden 3E's product capabilities.

The data-integration piece matters more than it might sound. Renewable asset performance is a function of weather, market prices and equipment behavior simultaneously. Platforms that can fuse all three — and layer predictive models on top — are positioned to capture the analytics spend that comes with fleet scale.

What did the parties say?

Stef Goossens, CEO of 3E, framed the deal as an ambition reset: "Backed by Hg, we are raising our ambition: to give our customers the industry's leading systems of record and intelligence, in support of the energy transition."

On the investor side, Aashima Jain, Thomas Martin and Chris Fielding at Hg pointed to 3E's accumulated engineering knowledge as the asset worth buying: "Since its founding, 3E has built a detailed, physics-based understanding of how renewable assets perform, backed by decades of operational data and insights that compound over time. That is the ideal foundation for building new AI products that deliver measurable value to customers."

That second quote is the strategic logic in one line. Hg is not buying an advisory shop; it is buying a proprietary dataset and simulation capability that it believes can be turned into AI products.

Why does consolidation in renewables software matter now?

The seller here is telling its own story. ReNew, one of India's largest renewable developers and operators, is divesting a European software and advisory asset — a signal that developer-owned analytics platforms are being spun out to specialists as the sector matures.

At the same time, the buyer profile has shifted. Software-focused private capital, rather than strategic industrials, is now consolidating the tooling layer of the energy transition. Galvanize Climate Solutions' participation as a climate-focused co-investor reinforces that pattern: infrastructure-grade money chasing data assets, not steel in the ground.

What comes next?

The transaction's terms — price, stake percentages, closing conditions — were not disclosed, so the market milestones to watch are operational rather than financial.

The near-term test is U.S. expansion. 3E's advisory business is deeply European in origin; SynaptiQ competing for North American solar, wind and storage portfolios against entrenched incumbents will show whether the Hg capital is enough to change the company's footprint.

The medium-term test is whether the promised AI products materialize. Jain, Martin and Fielding have committed to building on 3E's physics-based models and operational data history — a pledge with no deadline attached, but one that practitioners can track through product releases rather than press releases.

Watch for the first acquisition announcement. Hg's stated playbook includes broadening capabilities through M&A, and the pace of that pipeline will reveal how aggressively the new owners intend to consolidate the renewables analytics market.