Search results for: “renewables”
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Synchronous condensers: the economics?
This data-file captures the costs of installing a synchronous condenser, downstream of a renewable power facility, to emulate the inertia, reactive power and short circuit power from conventional generators. 1.0 – 2.5 c/kWh of costs may be added to the power supplies flowing out of the SC.
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Wind power: energy costs, energy payback and EROEI?
This data-file estimates 3MWH of energy is consumed in manufacturing and installing 1kW of offshore wind turbines, the energy payback time is usually around 1-year, and total energy return on energy invested (EROEI) will be above 20x. These estimates are based on bottom-up modelling and top-down technical papers.
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ESS: redox flow battery breakthrough?
ESS is emerging as a leader in medium-duration energy storage (4-12 hours), with an iron flow battery costing 2-5c/kWh (assuming >daily cycling) and lasting 20,000 cycles. The patent library is high quality. We note five challenges to consider. The largest is round-trip efficiency.
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Glass fiber: what upside in the energy transition?
Glass fiber makes up 50% of a wind turbine blade, lightens vehicles and insulates homes for 30-70% energy savings. Hence we see demand rising 3.5x in the energy transition. To appraise the opportunity, this 13-page note assesses the market, costs, CO2 intensity and leading companies.
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Wind turbines: screen of resin and polymer specialists?
This data-file tabulates details for 20 companies that make epoxy- or polyurethane resins and adhesives, especially those that feed into the construction of wind turbines. We think there are 5 public companies ex-China with 5-35% exposure to this sub-segment of the wind industry.
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Energy return on energy invested?
Global average EROEI is around 30x. Sources with EROEI above average are hydro, nuclear, natural gas and coal. Sources with middling EROEIs of 10-20x are solar, wind and LNG. Sources with weaker EROEIs are oil products, green hydrogen and some biofuels.
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Nuclear fusion: what are the challenges?
Nuclear fusion could provide a limitless supply of zero-carbon energy from the 2030s onwards. The goal of this 20-page note is simply to understand the challenges for fusion reactors, especially deuterium-tritium tokamaks. Innovations need to improve EROI, stability, longevity and costs.
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Energy development times: first consideration to full production?
Full cycle development times tend to average c4-years for large solar projects, 6-years for large offshore wind, 7-years for new pipelines, 7-years for new oil and gas projects, 9-years for new LNG plants and 13-years for new nuclear plants. This data-file reviews 35 case studies.
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First Solar: thin film solar breakthrough?
First Solar is a solar manufacturer with capacity to produce 8GW of solar panels per year, using CdTe thin film technology. It has production in the US and uses 60% less energy than photovoltaic silicon. Efficiency is interesting. It is usually lower for CdTe than c-Si, but 70% of First Solar’s patents target improvements.
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Nexwafe: PV silicon breakthrough?
Nexwafe is growing standalone silicon wafers on mono-crystalline seed wafers, with no need to slice ingots. It should improve solar efficiency, materials intensity and CO2 intensity. Our technology review found 60 patent filings and can partly de-risk growth ambitions.
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