Monday, June 17, 2024
Hawai'i Free Press

Current Articles | Archives

Tuesday, February 3, 2015
HEI 'Solution'--Remotely Shut off Your Solar Panels
By Selected News Articles @ 4:48 PM :: 5469 Views :: Energy

Can Microinverters Stabilize Hawaii’s Shaky Grid?

by Jeff St John, Green Tech Media, February 2, 2015 (excerpt)

...Hawaii leads the nation in rooftop solar penetration, with nearly one in nine customers, a total of about 51,000, tying their PV systems into the state’s island power grids. About three-fifths of those Hawaiian solar systems use microinverters from Enphase, the company that leads the market for DC-to-AC devices that sit at the solar panels themselves, rather than in one big box next to the power meter.

That adds up to more than 800,000 Enphase microinverters in Hawaii, each networked to the company’s cloud-based monitoring and control systems, ready to do things beyond simple solar-to-grid power conversion. This week, Enphase is unveiling the latest use of this installed capability: reprogramming its Hawaiian microinverter fleet en masse, to help Hawaiian Electric ride through solar-influenced disruptions on the edges of its power network.

Specifically, Enphase and Hawaiian Electric have reset the frequency and voltage ride-through settings of the microinverters, which govern how and when they trip offline when grid fluctuations arise. Standard settings for low-voltage ride-through (LVRT), however, can make the original disruption worse if it leads to a majority of the solar being supplied to a solar-heavy circuit to shut off all at once.

Enphase has expanded the range of circumstances under which its inverters will trip offline, as well as extending how long each inverter waits for disruptions to correct themselves before switching off, Enphase CEO Paul Nahi said in a Monday interview....

Enphase is far from the only player in the distributed solar universe that’s had the foresight to connect its inverters to a two-way communications network. Third-party solar provider SolarCity, for example, has worked with HECO and Department of Energy researchers to show that smart inverter technologies can allow more solar per circuit -- an important concession for HECO, as it seeks to slash the net metering rates that its solar-equipped customers receive.

Importantly, Enphase’s cloud-based monitoring platform knows “not only how well the solar system is performing, [but also] how well the grid is performing in those areas as well,” he noted. “In many cases, we have more insight into the grid performance than the utility does, because we have the two-way communications network.” That’s valuable data in states like California that are demanding that their utilities start to incorporate the growth of distributed energy into their long-range grid investment plans....

read ... Stabilize?

Microinverter Flashback: Why Stop at $500K? DoTAX Quietly Multiplies Hawaii Solar Tax Credit


TEXT "follow HawaiiFreePress" to 40404

Register to Vote


Aloha Pregnancy Care Center


Antonio Gramsci Reading List

A Place for Women in Waipio

Ballotpedia Hawaii

Broken Trust

Build More Hawaiian Homes Working Group

Christian Homeschoolers of Hawaii

Cliff Slater's Second Opinion

DVids Hawaii


Fix Oahu!

Frontline: The Fixers

Genetic Literacy Project

Grassroot Institute

Hawaii Aquarium Fish Report

Hawaii Aviation Preservation Society

Hawaii Catholic TV

Hawaii Christian Coalition

Hawaii Cigar Association

Hawaii ConCon Info

Hawaii Debt Clock

Hawaii Defense Foundation

Hawaii Family Forum

Hawaii Farmers and Ranchers United

Hawaii Farmer's Daughter

Hawaii Federation of Republican Women

Hawaii History Blog

Hawaii Jihadi Trial

Hawaii Legal News

Hawaii Legal Short-Term Rental Alliance

Hawaii Matters

Hawaii Military History

Hawaii's Partnership for Appropriate & Compassionate Care

Hawaii Public Charter School Network

Hawaii Rifle Association

Hawaii Shippers Council

Hawaii Together


Hiram Fong Papers

Homeschool Legal Defense Hawaii

Honolulu Navy League

Honolulu Traffic

House Minority Blog

Imua TMT

Inouye-Kwock, NYT 1992

Inside the Nature Conservancy

Inverse Condemnation

July 4 in Hawaii

Land and Power in Hawaii

Lessons in Firearm Education

Lingle Years

Managed Care Matters -- Hawaii

Missile Defense Advocacy

MIS Veterans Hawaii

NAMI Hawaii

National Parents Org Hawaii

NFIB Hawaii News

NRA-ILA Hawaii


OHA Lies

Opt Out Today

Patients Rights Council Hawaii

Practical Policy Institute of Hawaii

Pritchett Cartoons

Pro-GMO Hawaii

Rental by Owner Awareness Assn

Research Institute for Hawaii USA

Rick Hamada Show

RJ Rummel

School Choice in Hawaii

Talking Tax

Tax Foundation of Hawaii

The Real Hanabusa

Time Out Honolulu

Trustee Akina KWO Columns

West Maui Taxpayers Association

What Natalie Thinks

Whole Life Hawaii