Pension Funds Quietly Accumulate Positions in Geothermal Power Royalties

The Quiet Shift Toward Underground Energy Income

Geothermal power has spent decades as the overlooked sibling of solar and wind – generating steady electricity from the earth’s heat without the intermittency problems that plague other renewables. Now, a specific corner of geothermal finance is drawing attention from some of the largest pension funds in North America and Europe: royalty interests. These are contractual claims on a percentage of revenue generated by geothermal plants, structured similarly to mineral royalties in the oil and gas sector, but attached to power production rather than extraction. For pension funds hunting yield in a crowded market, the structure is genuinely attractive.

The accumulation is happening quietly, through private placements and infrastructure fund vehicles rather than public markets. Disclosure obligations are limited, and most funds have no reason to highlight niche allocations in their annual reports. But the activity is real, and the reasoning behind it follows a clear institutional logic that deserves examination.

Why Royalties, Not Equity

Owning equity in a geothermal operator means absorbing operational risk – drilling costs, maintenance downtime, equipment failures, and regulatory complications. Royalty positions sit above that noise. A royalty holder receives a fixed percentage of gross or net revenue from a producing geothermal field, with no obligation to fund ongoing costs. The geothermal operator handles everything; the royalty owner collects a check. For a pension fund managing liabilities that extend thirty or forty years into the future, this kind of passive, inflation-linked cash flow is close to ideal.

Geothermal royalties also carry a duration profile that matches pension obligations better than most fixed-income alternatives. A geothermal resource, once proven and developed, can produce for decades with relatively predictable output. The Geysers in California and the Wairakei field in New Zealand have operated continuously for over sixty years. That kind of resource longevity is rare in energy, and it allows pension actuaries to model cash flows with unusual confidence. When you compare that to corporate bonds maturing in ten years or real estate leases subject to tenant risk, the geothermal royalty’s appeal becomes clearer.

The Infrastructure Parallel

Pension funds have been increasing allocations to infrastructure assets – toll roads, airports, water utilities – for the better part of two decades, because these assets produce stable, often government-backed cash flows with built-in inflation adjustments. Geothermal royalties fit neatly into the same investment thesis. Power purchase agreements backing geothermal plants typically include escalation clauses tied to inflation indices, meaning the royalty payment grows over time in real terms. That feature alone separates geothermal royalties from most conventional fixed-income instruments, which erode in real value as prices rise.

There is also a regulatory tailwind that institutional investors are quietly factoring in. Several U.S. states and European Union member nations have set mandatory renewable energy targets that extend to 2035 and beyond. Geothermal, because it produces baseload power around the clock rather than only when the sun shines or wind blows, is increasingly valued by grid operators trying to balance variable renewable generation. That regulatory demand floor reduces the risk of a plant going offline for economic reasons, which directly protects royalty cash flows.

The supply of available geothermal royalty interests has grown as developers seek non-dilutive capital. Rather than selling equity or taking on project-level debt, some geothermal developers are willing to carve out royalty streams in exchange for upfront capital that funds exploration or field expansion. This dynamic mirrors what happened in the mining royalty market two decades ago, when companies like Franco-Nevada built significant businesses by providing capital to miners in exchange for revenue participation. Pension funds entering geothermal royalties now are making a similar bet: that a young royalty market will mature and that early positions will carry structural advantages.

The entry of pension capital also changes the competitive dynamics of geothermal development finance. When long-duration institutional money is available at reasonable rates, developers have less pressure to sell equity at unfavorable valuations during early-stage capital raises. This creates a feedback loop – better-capitalized developers build better projects, producing more reliable royalty streams, which in turn validates the asset class for pension fund investment committees still in the due diligence phase.

Risk Factors That Don’t Get Discussed Enough

Geothermal royalties are not risk-free. Resource decline is real – geothermal fields can experience pressure drops over time if extraction rates exceed natural recharge, reducing the revenue base against which a royalty is calculated. Some fields require ongoing reinjection of cooled water to maintain pressure, and if that process fails or becomes uneconomical, output drops. Royalty holders have no operational control over these decisions, which is precisely the same vulnerability that oil and gas royalty owners have always faced.

Geographic concentration also matters. The majority of commercially viable geothermal resources are located in geologically active zones – the western United States, Iceland, Indonesia, Kenya, and parts of Central America. A pension fund building a geothermal royalty portfolio needs to manage concentration risk carefully, because a change in local energy regulation or a natural event affecting a key field cannot be hedged through diversification if all the positions are in the same tectonic belt.

What the Portfolio Allocation Actually Looks Like

Pension funds are not replacing bond allocations with geothermal royalties wholesale. The positions being built are typically small – a fraction of the overall infrastructure or real assets sleeve within a larger portfolio. The strategic purpose is yield enhancement and inflation protection rather than total return maximization. A fund with a five percent infrastructure allocation might direct a portion of that toward a diversified royalty vehicle that holds interests across several geothermal projects in different geographies.

Some funds are accessing the space through pooled vehicles managed by specialist infrastructure managers, rather than acquiring royalties directly. This approach reduces the due diligence burden and allows smaller pension funds – those without dedicated energy investment teams – to participate. The manager handles asset selection, legal structuring, and ongoing monitoring, while the pension fund receives a proportional share of aggregated royalty income. The fee drag is a consideration, but for funds without internal expertise, it is the practical path to exposure. This broader pattern of pension funds using specialist vehicles to access niche income streams is also visible in other infrastructure sub-sectors, including pension funds accumulating positions in wastewater treatment bonds, where the income mechanics are similarly infrastructure-backed and long-duration.

The tax treatment of geothermal royalty income varies significantly by jurisdiction, and pension funds – many of which are tax-exempt entities – need to structure their holdings carefully to avoid triggering unrelated business taxable income under U.S. rules. This is not an insurmountable problem, but it requires legal structuring that adds cost and complexity to what might otherwise appear to be a straightforward income investment. Funds that get the structure right early have an advantage, because unwinding a poorly structured royalty position later is both expensive and time-consuming.

The Long Game

The pension funds moving into geothermal royalties are not chasing a short-term trade. The logic is generational – align long-duration liabilities with long-duration assets that produce inflation-sensitive income without requiring ongoing capital deployment. Geothermal resources that are producing today will likely still be producing when today’s forty-year-old pension beneficiaries reach retirement age. That time horizon alignment is rare and, for pension fund managers under pressure to match assets to liabilities, genuinely valuable.

What remains unresolved is pricing. Because geothermal royalty markets are private and thinly traded, there is no reliable benchmark for what a royalty interest in a given field should cost. Early institutional buyers are, in effect, setting the market. If the asset class matures and more capital floods in, valuations will rise and future buyers will pay more for the same cash flows. The funds moving now are either ahead of that repricing – or they are the ones inflating it.