Can you give some examples of renewables being the best economic choice currently?
Mike B
This fantasy is typically based on CAPEX for procurement of a given capacity and ignores all the ancillary costs like transmission, fast-ramp gas backup and the fact that productivity will be dramatically lower.
Example, on a price per MW purchase wind is dramatically lower than pretty much anything else. It's usually around $1 million/MW, so a 10MW wind turbine would cost roughly $10 million dollars. So, if you wanted 1,000MW of wind capacity you'd be looking at $1 billion, this is about 12x cheaper than the AP1000 nuclear reactor currently under construction at Vogtle, so let's use that FOAK cost for Vogtle as our baseline here.
A single AP1000 at 93% CF will produce 8.2TWh/year
A 1,000MW wind farm at 30% CF will produce 2.6TWh/year and require full nameplate backup in the form of some other source, usually gas
A single AP1000 will last ~80 years
A 1000MW wind farm will last ~20-25 years
Now of course the AP1000 has staffing and maintenance costs which are significantly higher than the wind farm. A nuke doesn't have zero OPEX. Staffing makes up the largest cost of nuke OPEX.
Comparatively, the wind farm has next to zero OPEX, so the costs come from firming its output with other sources.
So, OPEX for a nuke is internalized and reflected in the per kWh rate paid to the facility. OPEX for a wind farm is externalized and becomes a "grid" cost, in terms of backup capacity, its staffing, fast-ramping, fuelling....etc.
This is why renewables are "cheap". Low CAPEX and externalized OPEX make it very easy to sell something of inherently low capacity value as something with good procurement value.