Monthly Archives: March 2021

Aging Energy Infrastructure

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Guestwords in the East Hampton Star

By David Posnett March 17, 2021

On the South Fork of Long Island, we all know about yearly brownouts during peak demand for power in the summer. Indeed, energy demand on the South Fork is growing at almost twice the rate of the rest of Long Island.

And now we have witnessed the power outages in Texas during freezing weather. With decades of neglect of their power grids, refusal to update the necessary infrastructure, and an ill-advised policy of not building connections with out-of-state grids, many lives were lost and the economic fallout is still unknown.

Locally, two major blackouts in 1965 and 1977 paralyzed New York City and exposed the vulnerability of the power grid. The full story can be read by Googling “Gaslights to Generators,” a September 2002 article on New York City’s energy history by Meryl Feiner.

Long Island is in a precarious situation in terms of meeting growing energy demands. Historically the Island has not produced sufficient energy, and thus it imports energy from elsewhere. But with solar and now wind energy sources, this is about to change. There are plans for 4,000 megawatts from wind farms off Long Island shores and 130 megawatts from the South Fork Wind farm, the project that is furthest along.

An interesting article in Newsday by Mark Harrington, updated on Feb. 24, discusses a NYSERDA (New York State Energy Research and Development Authority) report on the required updates to the grid and the infrastructure required to manage the massive new clean energy sources being planned. Harrington quotes Tom Falcone, chief executive of the Long Island Power Authority, saying, “As you put more and more offshore wind onto the grid, think of it as water pipe. At some point you reach the limit, so in order to have more offshore wind you have to upgrade the pipe.”

If we do nothing, the report indicates, there would be a need for “curtailments,” or intentional power outages.

The total cost of the required infrastructure updates would be about $1.5 billion. The upgrades include building a 345,000-volt circuit from LIPA’s newly built Shore Road substation in Glenwood Landing to the substation in Melville, an upgrade of the South Shore transmission grid (already in process), conversion of an existing 138,000-volt transmission line in Levittown to 345,000 volts, a new interconnection line between the LIPA and Con Edison systems, solar power upgrades of various substations, and improvements that are either already part of LIPA’s capital budget or have already begun, such as upgrading transformers and switching gear and substations to higher voltages.

A full list of LIPA’s transmission system and distribution system projects was presented on Feb. 24 at the LIPA trustee meeting. The slide deck can be found at lipower.org.

I asked some experts the following question: Would these grid upgrades also be required if the source of the required extra energy were solely fossil fuel generated, and to what extent are the costs a result of converting to clean energy?

“It is clear that we need to increase the capacity and resilience of the Long Island grid, so let’s get to work on the immediate upgrades and retrofits necessary within the current infrastructure,” said Mariah Dignan of Climate Jobs NY and the Climate Jobs NY Education Fund. “But as we begin to realize the clean energy economy, we will need bulk power transmission and distribution voltage upgrades over the next decade to handle offshore wind generation, increased electrification, and a better flow of renewables from upstate to downstate and vice versa. These investments will pay off for decades to come, and labor is fighting to ensure this transformation creates good union jobs and protects Long Island ratepayers.”

Gordian Raacke, the executive director of Renewable Energy Long Island, said that if the same amount of capacity would be interconnected at the same locations, similar grid upgrades and costs would be needed for fossil fuel versus renewable energy. But it is also fair to say that fossil fuel generation could be located in other parts of the state, while offshore wind resources would have to be interconnected along the shore.

In addition, he said, there are several misunderstandings that need to be cleared up. First, the potential transmission and distribution upgrades are not associated with the South Fork Wind farm but with all of the offshore wind farms that would be connected to the Long Island grid, as well as the interconnection of distributed solar and energy storage projects. These costs would not be borne exclusively by Long Island ratepayers but shared across New York State. These are potential projects identified in studies and proposed for study. LIPA does not believe that all of these “possible transmission projects” will be built. And last, most of the transmission projects would not be needed until 2025 through 2035.

Gordian has often reminded us, from the beginning, that the energy infrastructure must be renewed or replaced regardless of wind farms. This is a really costly undertaking, and it’s terrific that PSEG is proposing to make it a state­wide charge to ratepayers.

Skybrator!

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From the Guardian.

Good vibrations: bladeless turbines could bring wind power to your home

‘Skybrators’ generate clean energy without environmental impact of large windfarms, say green pioneers

The giant windfarms that line hills and coastlines are not the only way to harness the power of the wind, say green energy pioneers who plan to reinvent wind power by forgoing the need for turbine towers, blades – and even wind.

“We are not against traditional windfarms,” says David Yáñez, the inventor of Vortex Bladeless. His six-person startup, based just outside Madrid, has pioneered a turbine design that can harness energy from winds without the sweeping white blades considered synonymous with wind power.

The design recently won the approval of Norway’s state energy company, Equinor, which named Vortex on a list of the 10 most exciting startups in the energy sector. Equinor will also offer the startup development support through its tech accelerator programme.

The bladeless turbines stand at 3 metres high, a curve-topped cylinder fixed vertically with an elastic rod. To the untrained eye it appears to waggle back and forth, not unlike a car dashboard toy. In reality, it is designed to oscillate within the wind range and generate electricity from the vibration.

It has already raised eyebrows on the forum site Reddit, where the turbine was likened to a giant vibrating sex toy, or “skybrator”. The unmistakably phallic design attracted more than 94,000 ratings and 3,500 comments on the site. The top rated comment suggested a similar device might be found in your mother’s dresser drawer. It received 20,000 positive ratings from Reddit users.

“Our technology has different characteristics which can help to fill the gaps where traditional windfarms might not be appropriate,” says Yáñez.

These gaps could include urban and residential areas where the impact of a windfarm would be too great, and the space to build one would be too small. It plugs into the same trend for installing small-scale, on-site energy generation, which has helped homes and companies across the country save on their energy bills.

This could be wind power’s answer to the home solar panel, says Yáñez.

“They complement each other well, because solar panels produce electricity during the day while wind speeds tend to be higher at night,” he says. “But the main benefit of the technology is in reducing its environmental impact, its visual impact, and the cost of operating and maintaining the turbine.”

The turbine is no danger to bird migration patterns, or wildlife, particularly if used in urban settings. For the people living or working nearby, the turbine would create noise at a frequency virtually undetectable to humans.

“Today, the turbine is small and would generate small amounts of electricity. But we are looking for an industrial partner to scale up our plans to a 140 metre turbine with a power capacity of 1 megawatt,” says Yáñez.

Vortex is not the only startup hoping to reinvent wind power. Alpha 311, which began in a garden shed in Whitstable, Kent, has begun manufacturing a small vertical wind turbine that it claims can generate electricity without wind.

The 2 metre turbine, made from recycled plastic, is designed to fit on to existing streetlights and generate electricity as passing cars displace the air. Independent research commissioned by the company has found that each turbine installed along a motorway could generate as much electricity as 20 sq metres of solar panels, more than enough electricity to keep the streetlight on and help power the local energy grid, too.

A scaled down version of the turbine, standing at less than 1 metre, will be installed at the O2 Arena in London where it will help to generate clean electricity for the 9 million people who visit the entertainment venue in a usual year.

“While our turbines can be placed anywhere, the optimal location is next to a highway, where they can be fitted on to existing infrastructure. There’s no need to dig anything up, as they can attach to the lighting columns that are already there and use the existing cabling to feed directly into the grid,” says Mike Shaw, a spokesperson for the company. “The footprint is small, and motorways aren’t exactly beauty spots.”

Perhaps the most ambitious divergence from the standard wind turbine has emerged from the German startup SkySails, which hopes to use an airborne design to harness wind power directly from the sky.

SkySails makes large fully automated kites designed to fly at altitudes of 400 metres to capture the power of high-altitude winds. During its ascent the kite pulls a rope tethered to a winch and a generator on the ground. The kite generates electricity as it rises into the sky and, once completely unspooled, uses only a fraction of the electricity generated to winch back towards the ground.

Stephan Wrage, the chief executive of SkySails, says the airborne wind energy systems mean “the impact on people and the environment is minimal …The systems work very quietly, practically have no visible effect on the landscape and barely cast a shadow,” he adds.

Today, the design can generate a maximum capacity of 100 to 200 kilowatts, but a new partnership with the German energy firm RWE could increase the potential output from kilowatts to megawatts. A spokesperson for RWE said the pair are currently looking for the ideal kite-flying site in the German countryside.