Energy

Gov. Charlie Baker and Gov. Chris Sununu, both Republicans, disagree over the value of a regional pact to drive down carbon emissions. Baker said the Transportation Climate Initiative, which could raise that gas tax by 17 cents, is the "best way" for states to meet emission reduction goals.

A proposal to cap carbon emissions from vehicles could add up to 17 cents to the price of a gallon of gas, according to estimates, but could also generate more than $500 million in revenue for the Bay State.

The state's Department of Public Utilities has yet to schedule hearings in the Columbia Gas probe.

Massachusetts is trending toward its long-term greenhouse gas emission reduction targets, but the effort to reduce global emissions is failing, a new report said.

Worcester-based Mass Megawatts Wind Power has announced Thursday the latest version of its solar tracking technology it says can improve power output by 60%.

Framingham energy firm Ameresco has secured a $1.8-million Energy Savings Performance Contract with the Silver Falls School District in Oregon.

Nick Stavropoulos has been named the new chief safety advisor at Columbia Gas, which is headquartered in Westborough and has continued to struggle with high-visibility safety concerns.

Solar Wolf Energy will purchase the former Cabot House Furniture location in Auburn in an expansion where the company will add 40 employees.

State utility regulators have ordered a broad investigation into the management of National Grid in a rare move born of concerns that one of the state's largest electricity providers failed to communicate about the potential for severe delays in solar power installations.

Framingham energy firm Ameresco has been contracted to build a solar farm made of more than 71,000 panels on a brownfield site in Illinois.