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

October 8, 2019
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.

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2028 and beyond.
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 third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023, 2024 and 2025 were a sell out success and 2026 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.

Read Next

January 19, 2026
US solar firm SunPower has signed a letter of intent to acquire California-based residential and commercial installer Cobalt Power Systems in an all-equity transaction. 
January 19, 2026
Emirati renewables developer Masdar and French utility Engie have reached financial close on the 1.5GW Khazna solar project in Abu Dhabi.
January 19, 2026
Solar PV has met two-thirds (61%) of the US electricity demand growth in 2025, according to a report from think tank Ember.
January 19, 2026
Last week, the Chinese Ministry of Commerce (MoC) issued its final review ruling regarding anti-dumping measures on solar-grade polysilicon originating in the US and South Korea.
January 16, 2026
Global tech giant Amazon has been approved as the buyer of the 1.2GW Sunstone solar project in Oregon, one of the largest solar PV projects in the US.
January 16, 2026
US C&I solar developer Altus Power has acquired four solar projects with a total capacity of 105MW from IPP Cordelio Power. 

Upcoming Events

Solar Media Events
February 3, 2026
London, UK
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA