Something unusual is happening in Hawaii: An electric utility and rooftop solar installers have agreed on a proposal to reward households for sharing clean energy with the grid at useful times. In many places around the U.S., utilities treat rooftop solar as an obstacle. They say it shifts grid-maintenance costs from customers who have solar to those who don’t, or causes headaches for their system planning and operations. Utilities in California are currently urging regulators to levy a monthly fee on anyone who adds rooftop solar, regardless of how it operates. - Canary Media

Ethanol made from corn grown across millions of acres of American farmland has become the country’s premier renewable fuel, touted as a low-carbon alternative to traditional gasoline and a key component of the country’s efforts to reduce greenhouse gas emissions. But a new study, published this week, finds that corn-based ethanol may actually be worse for the climate than fossil-based gasoline, and has other environmental downsides. “We thought and hoped it would be a climate solution and reduce and replace our reliance on gasoline,” said Tyler Lark, a researcher with the Nelson Institute for Environmental Studies at the University of Wisconsin, Madison, and lead author of the study. “It turns out to be no better for the climate than the gasoline it aims to replace and comes with all kinds of other impacts.” - Inside Climate News

The Arizona Corporation Commission rejected the adoption of a set of clean energy rules on Wednesday in a 3-2 vote. The rules package included a timeline for 100% carbon-free electricity, new demand-side resources standards and integrated resource planning reforms. The package would have expanded energy efficiency programs for Arizona Public Service (APS) and Tucson Electric Power (TEP), offering rebates to customers for replacing inefficient appliances and upgrading lighting. Commissioner Jim O'Connor, R, voted against the rules package despite his work last May with Commissioner Anna Tovar, D, to revive the package through a separate rulemaking. Advanced Energy Economy (AEE) called O'Connor's vote "surprising." - Utility Dive

What would you do with an extra $5,443 a year? Converting all home appliances and cars to run on electricity could eliminate a third of Australia’s greenhouse gas emissions while saving households $40bn a year by 2028, according to a new report. The report, Castles and Cars, by the new energy thinktank Rewiring Australia, found the average Australian household uses 102kWh of energy a day at a cost of $5,248 a year. Much of this cost comes from relying on petrol and gas to power cars, stoves, showers and heaters. - Guardian

The use of fossil fuels comes with a wide variety of externalized costs. The big focus tends to be on the carbon dioxide fossil fuel produces and its role in warming the climate. But fossil fuels also cause environmental damage when they're extracted, and burning them produces particulate pollution and ozone. Those substances have downstream effects on human health and agriculture. If all of these costs were included in the price of fossil fuels, then alternatives would be far more competitive.

There have been numerous attempts over the years to quantify these externalized costs. Some look at the issue from a purely economic perspective, and others look at efforts to inform policy. These efforts tend to be based on our best understanding at the time; however, as our knowledge improves, the figures can be worth revisiting. That's exactly what's been done by a team of researchers at Columbia and Duke Universities who use current climate scenarios and updated health data.

The researchers' results say that, even if you ignore the climate benefits, moving away from fossil fuels rapidly would lead to benefits that, in the US alone, can add up to trillions of dollars before the century is over. - ArsTechnica / CarbonBrief

NextEra is doubling down on green hydrogen, with plans to build a 500-megawatt wind project to provide power to a hydrogen fuel cell company, the company noted Wednesday in a third quarter earnings call with analysts. The Florida-based energy giant said it continues to expand its wind portfolio as well, announcing on Wednesday's call a deal by its NextEra Energy Partners limited partnership to acquire a 100-megawatt wind project in California for $280 million, including taking on $150 million in existing project finance debt. Overall, NextEra said it has added more than 5,700 megawatts over the first nine months of 2021 to its backlog of renewable energy and storage projects. A large chunk of that — 2,160 megawatts — came during the third quarter, divided up between 1,240 megawatts of new wind projects, 515 megawatts of new solar projects and 345 megawatts of new storage assets. - Utility Dive

Record levels of renewable energy drove down electricity prices across Australia in the September quarter, with prices zero or negative for one-sixth of the time, the Australian Energy Market Operator has said in its latest report. There was also little sign of the Morrison government’s much-touted “gas-led recovery”, with a supply disruption at Victoria’s Longford gas plant initially leading to record or near-record spot prices for the fossil fuel in Adelaide, Sydney and Melbourne. Gas’s share of the power mix also slumped one-fifth from a year earlier for the quarter as a whole. - Guardian