Can DC Microgrids be Simpler, Faster, Secure? Sandia, Emera Aim to Find Out

DC microgrids

In alternating current (AC) microgrids, there’s always the need to convert direct current (DC) storage, solar and other elements to AC. But with DC microgrids, all that could change -- and possibly reap simplicity, quickness, and cost savings, said Abraham Ellis, program manager for Sandia National Laboratories' renewable and distributed systems … [Read more...]

Non-Wires Alternatives: How Much, How Soon for Connecticut?

non-wires alternatives

States increasingly employ non-wires alternatives to tease out where distributed energy offers a better deal than traditional utility infrastructure – wires, poles, substations. But in Connecticut the idea is running into controversy. Utilities in the state say it’s too soon to press ahead with non-wires alternatives, while the state … [Read more...]

US Power Outages Double…Ameresco Acquires Solar Firm…Green Slowdown in Puerto Rico?

power outages

US power outages double in EIA report The US grid is generally reliable, but severe storms are taking their toll and increasing power outages, according to the Energy Information Administration. EIA reported last week that power outages nearly doubled in 2017, which the federal agency attributed to hurricanes and winter … [Read more...]

Let’s Re-Design Wholesale Market Rules To Reap The Benefits of Solar and Wind: Report

wholesale power market

Making wholesale power market rules friendlier to solar and wind energy could bring numerous cost and flexibility benefits, said a new report from a non-profit dedicated to strengthening the U.S. economy with renewable energy. Even though the prices of solar and wind energy are lower in many areas than conventional options, grid operators … [Read more...]

Study Finds Los Angeles is Getting Hotter, Threatening Electric Reliability

electric reliability

It may get much hotter in Los Angeles County in coming decades, exposing grid vulnerabilities and challenging electric reliability, according to university researchers. LA County's electricity infrastructure may suffer capacity losses as high as 240 MW, as population grows and temperatures rise from 2021-2060, according to "Climate Change in … [Read more...]

Microgrid To Ensure Cattle on Historic Hawaii Ranch Never Go Thirsty

Go Electric

At Parker Ranch -- a cattle ranch founded in the early 1800s and the largest in Hawaii -- a 400-kW Go Electric microgrid will ensure that cattle never go thirsty due to outages that have plagued the ranch for years. Situated near the end of Hawaii Electric Light’s (HELCO) distribution line on the Big Island are pumping stations that move … [Read more...]

Maryland Offers $5M for Resiliency Hub Microgrids

resiliency hub microgrids

Maryland today made $5 million available for resiliency hub microgrids — public places with electricity during power outages within low-to-moderate income neighborhoods. The Maryland Energy Administration (MEA) issued a competitive solicitation for the community microgrids. Applications are due March 1, 2019. The state agency describes a … [Read more...]

Puerto Rico Bill Would Seek 100 Percent Renewable Energy & Streamline Interconnection

utility microgrids

A special legislative commission in Puerto Rico is considering a bill that would put the US territory on track to meet its electric demand with 100 percent renewable energy by 2050, as well as streamline grid interconnection of distributed energy and microgrids. The proposed “Public Policy Law on Energy Diversification through Sustainable … [Read more...]

Protected: With San Diego Airport Microgrid, No More Blackouts and $6.4M/year Saved

airport microgrid

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A Surprise to Analysts: Less CHP in Microgrids, More Solar

CHP

Combined heat and power (CHP) provides year-round baseload energy in microgrids — something renewable resources don’t do. Yet solar PV now overshadows CHP in planned microgrid projects, according to a new microgrid database by ICF. “We see a lot of installed CHP systems in operating microgrids; it’s the largest technology in terms of capacity,” … [Read more...]