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David Shaffer

Reporter | Energy and business
phone: 612-673-7090
David Shaffer is a veteran reporter and editor for the Star Tribune, with more than three decades of experience on daily newspapers.
Recent content from David Shaffer
Flint Hills Resources plans $750 million in capital investment at its Minnesota refinery

Flint Hills Resources plans $750 million in capital investment at its Minnesota refinery

The 3-year project in Rosemount targets efficiency, reduced emissions

One large solar project in Minnesota going ahead, another delayed

Great River Energy plans a solar project near Buffalo, Minn., but NextEra's giant project near Marshall, Minn., will get further study.

Enbridge says Minnesota regulators applied "unlawful" process to its Sandpiper pipeline review

The pipeline company claims that the procedures will unfairly delay project.
Xcel 'nearly certain' it can comply with federal Clean Power Plan in Minn.

Xcel 'nearly certain' it can comply with federal Clean Power Plan in Minn.

Other utilities aren't as hopeful, ask U.S. Supreme Court to intercede
Xcel Energy reports increase in fourth-quarter and annual profits

Xcel Energy reports increase in fourth-quarter and annual profits

The Minneapolis-based utility said it met or beat its annual earnings guidance for the 11th straight year.

Regulators approve Minnesota Power solar project at Camp Ripley

Commissioners concerned by cost of Minnesota Power's plan.
Wind power industry surges, and expects steady growth

Wind power industry surges, and expects steady growth

2015 was the third-biggest year for expansion in the United States

Largest Minnesota solar array wins approval from utility regulators

The $180 million power project is planned for leased farmland in Chisago County.
Mpls. start-up wants to install hydropower without need for dams

Mpls. start-up wants to install hydropower without need for dams

Minneapolis start-up Verterra Energy has patented a horizontal turbine to harvest hydropower without a dam.
N.D. oil sinks to $20 per barrel with more bankruptcies expected as drilling activity declines

N.D. oil sinks to $20 per barrel with more bankruptcies expected as drilling activity declines

More bankruptcies are expected as drilling declines due to low prices.

Center for Energy and Environment hires new president to succeed founder

The Center for Energy and Environment, a Minneapolis-based nonprofit that promotes clean energy and conservation, said Thursday that it has hired a new president to…
Otter Tail Power finishes major upgrade at coal plant in Big Stone, S.D.

Otter Tail Power finishes major upgrade at coal plant in Big Stone, S.D.

Despite $356M in upgrades, the coal-powered plant may not be allowed to run at full capacity.
TenKsolar raises $25 million from new investors including Goldman Sachs

TenKsolar raises $25 million from new investors including Goldman Sachs

Investment will help sales; new investors include Goldman Sachs & Co.
Largest coal supplier to Minnesota electric utilities files for bankruptcy protection

Largest coal supplier to Minnesota electric utilities files for bankruptcy protection

Arch says it will keep shipping; Minnesota utilities don't foresee problems
Connexus Energy sells out its first, and Minn.'s largest, community solar garden

Connexus Energy sells out its first, and Minn.'s largest, community solar garden

After slow start, Connexus offered monthly payment option and business jumped
Obituary: Clayton Rein helped shape the housing industry in Minnesota

Obituary: Clayton Rein helped shape the housing industry in Minnesota

Clayton Rein, a Twin Cities real estate developer and property manager who owned art galleries, pioneered the renting of artwork for corporate offices and founded…
Midwest consumer advocates win victory on electric grid transmission rates

Midwest consumer advocates win victory on electric grid transmission rates

Consumer advocates have won a battle over excessive profits by utilities with transmission lines that deliver electricity across the Midwest. In a ruling that calls…
Solar power boom in Chisago County creates winners and losers

Solar power boom in Chisago County creates winners and losers

Eight major projects are planned, but some lament the loss of green fields.

Consumer groups cool to utility rate hike to help Iron Range mines, pulp mills

Consumer advocates question Minnesota Power's plan to shift electric costs from big industry to residential customers.

Regulators authorize expansive environmental reviews for proposed Minnesota pipelines

Enbridge Energy fears delays to its plan for northern Minnesota.
SEC investigating unusual 2012 stock trading at oil train company

SEC investigating unusual 2012 stock trading at oil train company

The inquiry is focused on a loan to a Wayzata firm.
Regulators OK interim electric rate hike for Xcel but worry about nuclear costs

Regulators OK interim electric rate hike for Xcel but worry about nuclear costs

Nuclear power costs, other investments are factors in the 5.5 percent boost, which takes effect on Jan. 1.

Cross-border pipeline switch allowing more Canadian crude into Minnesota is legal, judge rules

Judge denied request to stop Enbridge from bringing in more Canadian oil.
North Dakota to see more declines in oil drilling as prices hit 7-year low

North Dakota to see more declines in oil drilling as prices hit 7-year low

With prices at seven-year low, production keeps declining, despite slight jump in October
Heavy bitumen crude oil from Canada poses an extra environmental risk, study finds

Heavy bitumen crude oil from Canada poses an extra environmental risk, study finds

Study findings come as regulators face key decisions on Minnesota pipelines
Long a leader in wind power, Xcel sees advantages in owning more wind farms

Long a leader in wind power, Xcel sees advantages in owning more wind farms

Utility is leader in wind power, and investments are paying off.
State's largest solar array now generating power at MSP Airport

State's largest solar array now generating power at MSP Airport

With no fanfare, the switch was flipped on the Minnesota's newest and largest solar power generator

EPA sets 2016 blending targets for ethanol and other biofuels

More biofuel will be required to be blended into the nation's fuel supply next year, but the ethanol industry isn't entirely happy about it.The U.S.…
Shutdown of Monticello nuclear plant causes fish kill

Shutdown of Monticello nuclear plant causes fish kill

The sudden drop in temperature in the discharged cooling water resulted in a fish kill in the Mississippi River.

Southwest Minnesota wind farm sold out of bankruptcy to bank and local investors

Small investors stand to lose their investment in the Minwind project.
Farmer-owned cooperative CHS Inc. profits fell 28 percent in 2015

Farmer-owned cooperative CHS Inc. profits fell 28 percent in 2015

Annual profit declines 28 percent for the nation's largest farmer-owned cooperative.
More N.D. oil trains entering Twin Cities via west suburbs

More N.D. oil trains entering Twin Cities via west suburbs

Temporary rerouting sends more past Target Field and through downtown Minneapolis.
Would you believe gas prices of $1.70 a gallon by Christmas?

Would you believe gas prices of $1.70 a gallon by Christmas?

Gasoline prices in Minnesota are slipping below $2 per gallon, and experts say they're headed even lower.
Garofalo shows off self-driving technology in new Tesla

Garofalo shows off self-driving technology in new Tesla

Taking guests for a spin, Pat Garofalo says new technology is wave of transportation's future.
Mortenson creates unit to build grid-scale electric storage projects

Mortenson creates unit to build grid-scale electric storage projects

One of the nation's leading builders of renewable energy projects and transmission lines sees a business opportunity in large battery storage.
Ethanol industry making profits despite lower price of fuel

Ethanol industry making profits despite lower price of fuel

Companies benefitted from increased demand, but tighter margins are expected to stay over the next year.
Solar garden options rolling out for Xcel Energy customers in Minnesota

Solar garden options rolling out for Xcel Energy customers in Minnesota

For most consumers, shared solar is new territory, with its own rewards and risks.
Iron Range mines may get electric rate relief; residential rates would rise

Iron Range mines may get electric rate relief; residential rates would rise

Minnesota Power is proposing lower electric rates for mines, mills; residential rates would rise 14.5%.

Xcel proposes green-only electricity as customer option

The program is a response to customers, especially corporations, that want to be powered by wind and solar.
Keystone XL would have helped N.D. move some of its oil

Keystone XL would have helped N.D. move some of its oil

The rejection of Keystone XL is a setback for North Dakota’s oil industry, even though falling oil prices and the drop in Bakken drilling and…
Xcel requests rate hike; bills would go up for customers

Xcel requests rate hike; bills would go up for customers

By 2018, a typical electric customer's annual electric charges would be $132 higher if state regulators approve the 9.8 percent increase sought by the company.
Xcel Energy earnings up for the third quarter

Xcel Energy earnings up for the third quarter

Recent rate hikes in Minnesota, North Dakota and South Dakota are contributing to the utility's bottom line.
TenKsolar to replace failed equipment on solar power arrays

TenKsolar to replace failed equipment on solar power arrays

A software problem with solar arrays curtailed energy production during late summer.
State is set to make a big leap into solar

State is set to make a big leap into solar

The state Department of Administration is seeking bids for power from shared solar projects planned in Xcel Energy's Minnesota region.
Dayton writes BNSF to criticize oil train traffic near downtown Mpls.

Dayton writes BNSF to criticize oil train traffic near downtown Mpls.

The largest rail hauler of Bakken crude oil recently disclosed a shift in traffic that sends trains through western suburbs.

North Dakota and Minnesota face off over coal power in federal appeals court

The federal appeals court will see if a Minnesota law violates interstate commerce.
State Supreme Court asked to step into pipeline battle

State Supreme Court asked to step into pipeline battle

Enbridge Energy, state PUC seek review of ruling requiring environmental impact statement for Sandpiper crude oil project.

Xcel launches $68M upgrade at Prairie Island nuclear plant

The upgrades aim to extend the life of the 1970s-era power plant.
Slow, stinky start to Le Sueur, Minn., green-energy project

Slow, stinky start to Le Sueur, Minn., green-energy project

The federally subsidized plant is generating less electricity, more odor.
Xcel Energy wants to replace 100,000 Minnesota streetlights with LEDs

Xcel Energy wants to replace 100,000 Minnesota streetlights with LEDs

Utility's five-year project promises better lighting, savings for cities.
North Dakota oil output slips again as outlook for industry gets bleaker

North Dakota oil output slips again as outlook for industry gets bleaker

Production has declined in five of the past eight months as the industry tries "to weather the storm."

Stalled Xcel solar garden program in Minnesota may end up in court

Clean energy developers complain the rules are unclear, and Xcel Energy is to slow connecting solar projects to substations.
Obituary: Emery Bulinski, owner of Ely's Snowbank Lodge

Obituary: Emery Bulinski, owner of Ely's Snowbank Lodge

Emery Bulinski, an entrepreneur who moved to Ely, Minn., after World War II and owned the former Snowbank Lodge and at least a dozen other…
Xcel Energy plans more wind, solar power and less coal — and sooner — in Minnesota

Xcel Energy plans more wind, solar power and less coal — and sooner — in Minnesota

The utility looks to replace two of three coal burners at its Sherco plant with natural gas unit by 2026.

Environmental groups seek enhanced studies of planned crude oil pipelines across Minnesota

The Sandpiper pipeline remains on hold while Line 3 has similar environmental concerns.

First solar garden completed in Xcel's Minnesota region

About 1,300 community sites are waiting for approval in Xcel's Minnesota service area.
Gevo Inc. plans continues production of new biofuel at Luverne, Minn., plant

Gevo Inc. plans continues production of new biofuel at Luverne, Minn., plant

An investment of $5 million is planned at the isobutanol plant in Luverne, Minn.

Wayzata-based Dakota Plains Holdings' stock takes wide swings

The company, which loads oil trains, must submit a plan by Oct. 14 to stay in NYSE's small-cap exchange.
Anti-pipeline groups ask judge to halt increased Canadian oil flow into Minnesota

Anti-pipeline groups ask judge to halt increased Canadian oil flow into Minnesota

Opponents asked a judge to stop the increased flow from a Canadian line.
Big power users face smaller harvest from solar gardens

Big power users face smaller harvest from solar gardens

State regulators' recent decision to limit the number of solar gardens per site — a change sought by Xcel and supported by some solar developers — has clouded the prospects for corporate and institutional deals.
Surprise at the pump: Lowest Labor Day gas prices in 11 years

Surprise at the pump: Lowest Labor Day gas prices in 11 years

Gas prices hit an 11-year low just in time for holiday travel; they could drop even further this fall.
Xcel Energy taking heat for slow rollout of solar garden program in Minnesota

Xcel Energy taking heat for slow rollout of solar garden program in Minnesota

Due to delays, shared projects are unlikely to be built this year, energy companies say
Environmental, tribal groups want Sandpiper route reconsidered

Environmental, tribal groups want Sandpiper route reconsidered

Minnesota PUC is not obligated to revisit its June decision.
Minn., N. Dakota are pushed to work together on clean energy

Minn., N. Dakota are pushed to work together on clean energy

Clean Power Plan has incentives for states to work jointly on carbon emissions.
Ending years of litigation, Gevo and Butamax to work on creating markets for new biofuel

Ending years of litigation, Gevo and Butamax to work on creating markets for new biofuel

Gevo's isobutanol will be for jets; Butamax's for vehicles.

Diesel prices, now less than gas at the pump, likely to rise into the fall harvest

Analysts expect prices to jump as farmers fill up to harvest fields.
Uncertain outlook as North Dakota tops 10,000 shale oil wells

Uncertain outlook as North Dakota tops 10,000 shale oil wells

North Dakota surpassed a milestone in June — its 10,000th shale oil well — amid a still-gloomy outlook for its petroleum industry thanks to continued low crude oil prices.
Midwest states question if power grid operator watches for consumers

Midwest states question if power grid operator watches for consumers

Con­sum­er pro­tec­tion is get­ting short-cir­cuit­ed on the Midwest e­lec­tric grid, ac­cord­ing to reg­u­la­to­ry watch­dogs in Minnesota and oth­er states.
Wind turbine owner forces statewide review of utilities' tacked-on fees

Wind turbine owner forces statewide review of utilities' tacked-on fees

Wind turbine owner's monthly $5 charge sparked the review.
Lower gasoline prices still pinching the ethanol industry

Lower gasoline prices still pinching the ethanol industry

Profits are down even though price of corn for fuel remains low.

CenterPoint seeks natural gas rate hike in Minnesota

The firm wants an annual 6 percent bump for investments.
EPA rule on coal power plants is push toward clean energy and efficiency

EPA rule on coal power plants is push toward clean energy and efficiency

New EPA rules dictate less coal burning and more clean energy, efficiency

Co-ops in southern Minnesota complete deal to acquire investor-owned utility

Electric cooperatives in southern Minnesota closed a $122 million deal Friday to acquire the assets of the investor-owned utility serving Albert Lea and other small…
Crude oil pipeline serving Twin Cities refineries to get $125M upgrade

Crude oil pipeline serving Twin Cities refineries to get $125M upgrade

The construction, to begin next year, doesn't require laying new pipe, and won't significantly increase the overall flow of crude oil from a terminal in Clearbrook, Minn.
CEO of Xcel Energy says the utility supports large-scale solar projects

CEO of Xcel Energy says the utility supports large-scale solar projects

CEO Fowke said it's more cost-effective than smaller projects.
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