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DOE researchers investigate economic and environmental impacts of converting wet waste to renewable diesel

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Meanwhile, wet waste feedstocks, such as animal manure and fats, oils, and greases (FOG), represent another important category of resources that could be utilized to produce MCCI bioblendstocks due to its abundant availability. Skaggs et al. demand in 2016. —Ou et al. 1c06561.

Waste 434
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ICL team assesses relative costs of carbon mitigation for 12 H2 production paths; trade-off between cost and level of decarbonization

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A team at Imperial College London has examined the relative costs of carbon mitigation from a lifecycle perspective for 12 different hydrogen production techniques using fossil fuels, nuclear energy and renewable sources. Their results show a trade-off between the cost of mitigation and the proportion of decarbonization achieved.

Cost Of 236
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EPIC: state-level renewable electricity mandates increase electricity prices up to 17% over 12 years; cost more expensive than benefit

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As states take the lead in confronting climate change, a flagship policy is often Renewable Portfolio Standards (RPS). RPS programs, which require that a certain percentage of the state’s electricity come from renewable sources, currently cover 64 percent of the electricity sold in the United States.

Renewable 207
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New long-duration, extended capacity Na-Al battery design for grid storage

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The new battery design could help ease integration of renewable energy into the electrical grid at lower cost, using Earth-abundant metals, according to a study just published in Energy Storage Materials. h is achieved with an estimated raw active materials cost of $7.02 mAh cm −2 , a discharge duration of 28.2 Weller et al.

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Japan team evaluates battery-assisted low-cost hydrogen production from solar energy

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The results from this study suggested a cost of hydrogen as low as ¥17 to ¥27/Nm 3 (US$0.16 - $0.25) using a combination of technologies and the achievement of ambitious individual cost targets for batteries, PV, and electrolyzers. For comparison, the US DOE’s 2020 target for the levelized cost of hydrogen (production only) is $2.30/kg.

Low Cost 403
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Study finds renewable fuels from hydrotreated vegetable oils outperform transesterified lipids and BTL from woody material in environmental lifecycle impacts and costs

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GHG emission comparison between fossil diesel, transesterified lipids, HVO and woody BTL. Waste feedstocks available for HVO are sparse, but the availability and potential of agricultural feedstocks are higher. GD = HVO; RSO = Rapeseed Oil; SBO = Soybean oil; Biodiesel = Transesterified lipids. Sunde et al. Click to enlarge.

Oil 239
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Report for IPCC finds renewables could supply up to 77% of global energy by 2050 under most optimistic scenario; need for enabling public policies and investments

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Ranges of global technical potentials of renewable energy sources derived from studies analyzed in SRREN report. The authors reviewed more than 160 existing scientific scenarios on the possible penetration of renewables by 2050, alongside environmental and social implications; and then reviewed with four of these in-depth.

Renewable 218