PVcase: Nearly half of US utility-scale solar projects fail to complete

Nearly 50% of utility-scale solar projects fail to reach completion, according to data from PVcase.

Specifically, 44% of US respondents report that 50% or more of their projects are never built.

The Widening Gap

The scale of the US solar pipeline has expanded rapidly, growing 88% in the year to October 2026, according to PVcase data.

Thirty-seven percent of US respondents report successfully delivering over 75% of their projects.

Owen Burns, director of development engineering at Sol Source Power, noted that "No mitigations methods are perfect here..."

Where Projects Stall

Failures in project development concentrate at two distinct phases: the acquisition of permissions, covering both planning approvals and grid interconnection, and securing project financing, which culminates in the final investment decision (FID). Although early-stage cancellations are frequent, the magnitude of the loss is heavily influenced by the specific point of failure. Miguel Herrero, senior market adviser at PVcase, observed that attrition during very early stages is entirely typical. The most critical issue arises when projects fail after FID, either during construction or, more severely, during commissioning.

The statistics highlight a sharp disparity in developer outcomes, as 28% of US respondents indicated they successfully completed 50% or fewer of their projects.

Financial and Social Pressures

• 90% of US utility-scale solar projects recover capital expenditure within six years, while 53% achieve this milestone within three years, according to PVcase data.
• 80% of US projects rely on Power Purchase Agreements (PPAs), an increase from 74% in previous periods, indicating a heavy dependence on long-term offtake contracts for revenue security.
• The US solar capital stock consists of 59% equity and 41% debt, reflecting a financing structure with a substantial equity component compared to debt-heavy models.
• Community opposition has emerged as a significant failure mode, rising to 57% of reported issues in the US, according to PVcase.
• In Germany, community opposition is the top risk factor at 32%, compared to a 20% global average, highlighting regional variations in social acceptance challenges.

Survey Methodology and Capital Structure Context

PVcase’s findings derive from market research conducted in July 2026, surveying 405 utility-scale solar professionals across the United States, Germany, Italy, and Spain. The sample included approximately 100 respondents in each of these four key markets, comprising a mix of senior executives, vice presidents, engineers, and other project stakeholders. While the US-specific failure rate of 44% aligns closely with the global average of 46%, PVcase notes that the US market presents distinct challenges. The report, titled "The State of Solar Project Development 2026-2027," identifies project financing and investing as the bottom of a pre-construction "Valley of Death," where reaching financial close remains the toughest challenge even in markets with strong returns.

Miguel Herrero, senior market adviser at PVcase, explained that trust is central to overcoming these financial hurdles, stating, "It’s a question of trust... And trust is very hard to earn and easy to burn." He argued that interconnected workflows are necessary to ensure all project components work in unison, aiming to transform the "valley of death" into "rolling hills of project development." Herrero emphasized that while early-stage attrition is normal, the problem intensifies when it occurs at FID due to sunk resources, with the most severe issues arising during construction or commissioning.

In terms of revenue security, PVcase attributes the high reliance on PPAs to data center and industrial load growth, which underpins merchant-adjacent offtake. This contracted revenue base contrasts with the equity-heavy capital stock of 59% equity to 41% debt.

Data Center Offtake and Community Dynamics

Owen Burns, director of development engineering at Sol Source Power, stated that opposition to data center deployment has led to community pushback "when it comes to building anything," including energy projects. Burns added, "We feel that by doing this we can show them that our projects are good neighbors." Herrero noted that projects failing deeper in the development process are more costly, explaining that while early-stage attrition is normal, the problem intensifies when it occurs at FID because a lot of resources have been sunk.