Engie wins 50MWp/300MWh solar-plus-storage duo on Guam

Facebook
Twitter
LinkedIn
Reddit
Email
Guam. Source: Flickr, Jonathan Miske

Engie has been hired by Guam’s state electricity utility to build two solar-plus-storage plants with a combined capacity of 50MWp/300MWh on the Micronesian island.

The firm scooped up the project duo in the third round of Guam’s competitive renewable tender programme after submitting the lowest bid.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

The plants will deliver more than 85GWh annually and are scheduled to be operational by 2022, according to Engie.

By the time this article was published, the French energy group had not responded to PV Tech's questions about the project's tariff, its costs and its construction timeline.

The firm's storage business, Engie EPS, will supply the battery storage system and act as the solution provider and system integrator with help from partner Samsung SDI.

Carlalberto Guglielminotti, Engie EPS CEO, said that the “iconic” project marks a “paradigm shift,” in that it is “now possible to provide solar power at night cheaper than conventional generation.”

Engie EPS estimates that the installed battery systems can ensure power for seven hours after sunset.

Guam’s Power Authority (GPA) will formally award Engie with a 20-year power purchase agreement (PPA) once the regulatory recourse process finishes and the partners have clinched approvals from two local public service commissions.

The GPA is working to wean itself off petroleum products shipped in by tanker, and towards a target of sourcing 25% of energy from renewables by 2021.

The other major solar project underway on the Southern Pacific US territory is a pair of 60MW PV plants, announced in August 2018 by Hanwha Energy and a consortium including Korea Electric Power Corp and LG-CNS, part of LG Corporation.

The US military accounts for one-fifth of Guam's electricity consumption.

US solar prospects amid trade tensions and a changing incentive landscape will take centre stage at Solar Media's Solar & Storage Finance USA in New York on 29-30 October 2019.

13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

Read Next

July 3, 2026
The US is reportedly drafting a ban on Chinese solar inverters over concerns that they pose a risk to the grid.
July 3, 2026
The state of New York has reached 8GW of cumulative installed distributed solar PV, putting the state ahead of its 10GW target by 2030.
Premium
July 2, 2026
As the 4 July safe harbour deadline nears, VDE Americas’ Lisa Casey says US solar is at a decisive but nuanced turning point.
July 2, 2026
The Massachusetts Senate’s new energy efficiency legislation has been broadly welcomed by US solar industry and clean energy representatives.
July 2, 2026
New Jersey’s legislature has passed a bill to enable plug-in solar in the state, becoming the tenth state to advance such a bill.

Upcoming Events

Solar Media Events
October 13, 2026
San Francisco Bay Area, USA
Solar Media Events
November 3, 2026
Málaga, Spain
Solar Media Events
November 24, 2026
Warsaw, Poland
Solar Media Events
April 20, 2027
Istanbul, Türkiye