Grids & Integration

HVDC transmission helps wind but may not help solar

A $2.5 billion Midwestern HVDC transmission project to carry mostly wind power has gained major new investments, which help validate the technology. But an HVDC transmission project that would primarily drive more solar capacity is yet to be identified.

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Morning Brief: TVA solicits 200 MW of renewables, Sungrow supplies the Wright project

Also in the brief: 14 MW approved in Maine, 20 MW approved in Indiana, a molten aluminum thermal energy storage system and more.

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Hydrogen is the first viable option for seasonal storage

Compressed hydrogen is “the first viable option” to help meet wintertime electricity demand in a high-renewables grid, says DNV GL, a global consulting firm.

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Sunrun responds to PG&E’s gas procurement by modeling a decentralized grid

Directly challenging the bankrupt utility’s system reliability request for proposals, Sunrun has released a paper outlining a renewable alternative: distribution islands with solar and battery backup.

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The duel for the future of Indiana’s energy identity

While state legislators decide the fate of a bill aimed at adding restrictions to the retirement of existing generation plants, the state’s second-largest utility has issued the results of an unprecedented solar solicitation.

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How Canadian hydro could save New England and New York $5.4 billion

MIT researchers model how 4 GW of powerlines connecting the northeast USA to Quebec hydroelectric facilities eliminates the need for up to 60 GW of wind, solar and storage as the two regional power grids approach 100% clean energy.

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Fuel cell builder Bloom Energy continues streak of business math errors and lack of profits

A likely profitless 2019 will bring Bloom’s streak to 76 profitless quarters. Its most recent business math error has the firm restating years of earnings.

Software can drastically improve the economics of commercial solar

Jigar Shah of Generate: “Load flexibility is the giant issue nobody is talking about…Extensible Energy’s load-flexibility software is a win-win for the solar contractor and the building owner. Building owners get a higher ROI and faster payback time, and the solar contractor can offer an easy-install demand charge solution with or without batteries.”

Reactive power produced on-site increasingly important as solar power and EVs go mainstream

Cutting costs and integrating clean energy with local reactive power generation.

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Trump budget request boosts nuclear, clean coal – while solar, ARPA-E and energy R&D are cut

Presidential budget requests rarely make it through congress. Nevertheless, this budget reveals the administration’s radical goals. Bad news for ARPA-E , EPA and Energy-Star.

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