Search results for: “renewables”
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Heliogen: concentrated solar breakthrough?
Heliogen has set a new record for concentrated solar power in 2019, generating >1,000C temperatures from an array of c370 hexagonal mirrors, which are precisely controlled using computer vision. This is almost 2x traditional CSP plants. Hence this data-file reviews 21 of Heliogen’s patents, finding impressive innovations and ultimate costs.
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Ten Themes for Energy in 2020
Energy transition is maturing as an investment theme. ‘Obvious’ portfolio tilts are beginning to look over-crowded. Non-obvious ones are looking over-looked. This note outlines the ‘top ten’ themes that excite us most in 2020, among commodities, drivers of the energy transition, market perceptions and corporate strategies.
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Carbon offsets: costs and leading companies?
This data-file screens 30 companies that are offering CO2 offsets to consumers and commercial customers. Costs vary from $4-40/ton, as a function of project types and organizational structure. We recently used the data-file to offset 200T of CO2, in the most economical, tax-efficient and personally resonant way.
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Solar Energy: Where’s the IP?
We have tabulated 110,000 solar patents. Research peaked in 2012-13, at 11,500 patents/year. It since slowed to c6,000/year. Yet Chinese companies have ramped up to 50% of all the filings, and now comprise 14 out of 2019’s top 25 solar patent filers. Majors’ patents comprise c0.5% of the total, with one SuperMajor clearly leading.
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Solar power: the economics?
Levelized costs of solar electricity are estimated at 7c/kWh in our base case, but can realistically range from 4-40c/kWh. This data-file is a breakdown of solar costs, as a function of capex, opex, insolation, curtailment and decline rates. Solar can be highly competitive, up to 35-50% of many power grids.
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Offshore wind costs are inflating?
This data-file tabulates the capex costs of 35 offshore wind projects in the UK, with 8.5GW of capacity, which have been installed since the year 2000. There is little evidence for deflation. Rather, breakeven power prices appear to have risen at a 2.5% CAGR over the past decade. Our modelling is show in the data-file.
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Energy Costs of Constructing Solar Assets
This data-file quantifies the energy costs of manufacturing solar panels, based on 10 studies and prior projects. We see the average solar project requiring 5MWH/kW, with a 2.3-year energy payback, a c10x energy-return on energy-invested and CO2-intensity of 90kg/boe (for contrast, average oil is c440kg/boe and average gas is c350kg/boe).
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Solar water heaters: the economics?
Under our base case estimates, a $130/ton CO2 price is required to achieve passable economics and incentivize rooftop solar heaters. Once installed, solar heaters save around 1T of CO2 per household per year and lower water heating bills by 50-80%. This data-file models the economics.
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US ethanol plants: what CO2 intensity?
US bioethanol plants produce 1Mbpd of liquid fuels, with an average CO2 intensity of 85kg/boe. Overall, corn-based bioethanol has c40% lower CO2 than oil products. We screened the leaders and laggards by CO2-intensity, covering Poet, Valero, Great Plains, Koch, Marathon and White Energy.
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Biomass to biofuel, or biomass for burial?
Greater decarbonization at a lower cost is achievable by burying biomass (such as corn or sugarcane) rather than converting it into bio-ethanol. This model captures the economics. Detailed costs and CO2 comparisons are shown under different iterations.
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