Mark Jaffe

Mark Jaffe has been a reporter for The Philadelphia Inquirer, Bloomberg News and The Denver Post. He was also previously a Paris correspondent for Businessweek.

Colorado PUC rejects Xcel Solar Connect plan over competition concerns

December 8, 2014 at 11:24 a.m.

Colorado PUC rejects Xcel Solar Connect plan over competition concerns

Extraction executives, from left: Rusty Kelley, CFO, Mark Erickson, CEO, and Matt Owens, president.

Extraction Oil & Gas profits from small holdings big players ignored

April 26, 2016 at 4:04 a.m.

Extraction Oil & Gas profits from small holdings big players ignored

NEXTera Energy wind farm has 250 wind turbines that dot the landscape north of Limon, Colorado.

A big boost in wind power can cut Colorado C02 emissions

April 25, 2016 at 10:33 p.m.

A big boost in wind power can cut Colorado C02 emissions

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Renewable energy a pockeboot win says eco-pioneer David Freeman

April 26, 2016 at 2:53 p.m.

Renewable energy a pockeboot win says eco-pioneer David Freeman

PUC OKs 2-year plan advocates say puts end to install “solar coaster”

November 24, 2014 at 10:12 a.m.

PUC OKs 2-year plan advocates say puts end to install "solar coaster"

Special goggles give Agribotix president Paul Hoff a view of what the camera aboard the drone sees as it surveys farm fields.

Drone flight to catch Asian condor leads to ag application at home

April 26, 2016 at 10:18 a.m.

Drone flight to catch Asian condor leads to ag application at home

The 21-member Oil and Gas Task Force established by Governor John Hickenlooper executive order gathered Thursday, November 20, 2014 for its third meeting at The Ranch - Thomas McKee building at the Larimer County Fairgrounds. The task force met again on Friday.

Colorado oil, gas task force begins outlining key issues in land use conflict

April 26, 2016 at 7:45 a.m.

Colorado oil, gas task force begins outlining key issues in land use conflict

August Miller, left, and Lauren Korba, both of Longmont, hold signs as protesters gather Thursday outside the building where the governor's oil and gas task force met in Loveland.

Colorado oil, gas task force gets earful from elected officials

April 26, 2016 at 6:05 p.m.

Colorado oil, gas task force gets earful from elected officials

Under Xcel's proposal, the average residential bill would rise about 5.3 percent, or $3.96 a month. The consumer counsel proposal would cut the average residential bill $1.58 a month, about 2.1 percent.

Xcel wants rate hike, PUC staff recommends $57M reduction

April 26, 2016 at 4:06 p.m.

Xcel wants rate hike, PUC staff recommends $57M reduction

The red "SkyDoc" balloon has been used for vertical profiling experiments in Alaska, Greenland and Antarctica. It lifts small instruments that provide continuous measurements at various heights.

Researchers assess emissions from Colorado oil and gas fields

May 15, 2017 at 6:19 a.m.

Researchers assess emissions from Colorado oil and gas fields

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Mark Jaffe

All Stories

Colorado PUC rejects Xcel Solar Connect plan over competition concerns

Extraction Oil & Gas profits from small holdings big players ignored

A big boost in wind power can cut Colorado C02 emissions

Renewable energy a pockeboot win says eco-pioneer David Freeman

PUC OKs 2-year plan advocates say puts end to install “solar coaster”

Drone flight to catch Asian condor leads to ag application at home

Colorado oil, gas task force begins outlining key issues in land use conflict

Colorado oil, gas task force gets earful from elected officials

Xcel wants rate hike, PUC staff recommends $57M reduction

Researchers assess emissions from Colorado oil and gas fields