AlvaAlva Uprate

Alva Uprate combines steam-generator replacement with a second turbine plant instead of constructing an entirely new reactor. The company bases the design on an uprate completed at Sweden's Ringhals Unit 4 and reports more than one hundred reactor-years of operation for the underlying technologies. Its current design targets an additional 250–300 megawatts of electrical output per reactor.

Alva packages engineering, procurement, licensing, construction, and commissioning into a repeatable project. Its published commercial proposal uses a firm fixed price of approximately one billion dollars per uprate and a construction target of less than two years after procurement. A coordinated control system integrates the original turbine, additional turbine, and reactor operations.

An Alva Uprate requires substantial work on an operating nuclear facility: steam-generator replacement, construction of an additional turbine plant, and integration of the reactor and turbine control systems. The delivery scope includes regulatory compliance, procurement, installation, and commissioning. Alva identifies utility operations and outage planning as interfaces that its project teams must coordinate.

The published price is approximately one billion dollars per uprate, making financing part of the proposed delivery arrangement. Alva works with utilities and large power consumers on a model intended to finance retrofits without increasing residential ratepayer costs. Its construction target starts after procurement, so the stated period does not cover the entire development and purchasing process.

Alva positions its uprate offering around expansion of the existing United States nuclear fleet. Its February 2026 launch announcement describes increasing demand from artificial intelligence and industrial electricity users and estimates a combined potential of ten gigawatts of additional capacity. The published design adds a second turbine generator and replaces steam generators at existing reactors.

The company describes financing arrangements involving utilities and large power consumers, including hyperscalers, rather than relying solely on residential ratepayer funding. Its launch financing supports work on multiple projects, engineering-team expansion, and pursuit of regulatory pre-approvals. These are the provider's announced plans and capacity estimates for the offering, rather than completed deployment totals.

Alva Uprate combines replacement steam generators with a second turbine plant outside the protected area of an existing nuclear facility. The steam-generator changes increase heat-transfer capacity, while the additional turbine converts the increased steam flow into electricity.

A dual-redundant digital control system coordinates the reactor and both turbine systems. Alva offers utilities a turnkey upgrade covering licensing, procurement, construction, and commissioning, with a current design target of 250–300 MWe of additional output per reactor.