They offer the following to support their statement. Source
The levelized cost of electricity, or LCOE, is an oft-misused measure of the cost of generating electricity over the lifespan of a facility. Because of
its simplicity and visual appeal, LCOE makes frequent appearances in the media. It is sometimes used to argue that investors or utilities should build more of the generation
technology with the lowest LCOE. This approach misses a big part of the picture - the value to the Grid.
A very typical example is recent performance by the largest Wind Farm in Alberta.
If Total Generation falls below Total Demand even briefly, voltage and/or frequency control will be lost leading to brownouts, blackouts and potentially
complete Grid Collapse if control cannot be immediately restored.
Without Wind or Solar, the Alberta Utility Grid can meet demand and control Voltage & Frequency by modulating Fossil Fuel Generation (Coal and Natural Gas.
Adding Wind and Solar does not INCREASE Total Generation. It only displaces existing Fossil Fuel generation while adding to Total Grid Costs.
When Wind and Solar Generation is reduced by their characteristic variability, there is insufficient Fossil Fuel generation available to meet demand
and therefore Voltage & Frequency control is lost.
Li-ion batteries are currently the most technically mature option.
In the following example, maintaining Grid stability requires 1,000,000 Mw of Energy Storage PLUS 35,620 Mw of
Wind Generation (19,790 1.8 Mw Wind Turbines)
Other energy storage options include:
None of the above are viable at the total capacity necessary.
The addition of a large amount of wind generating capacity PLUS a large amount of energy storage to back it up will significantly increase the cost
portion of the LCOE calculation without any increase in energy generated. This will increase the Grid LCOE significantly, resulting in a large
increase to the consumer directly or to the taxpayer for subsidies.
Currently, the largest battery storage is in Monterey County, California
It is only 300 Mw or 0.03% of what is required in the above example.
Although the cost for batteries has fallen, they remain prohibitively expensive at $1,211/kw. In this example the total 2025 installed cost of 1,000,000 Mw of battery storage would be at least US$12.1 Trillion
Battery Storage Capex 2018 and 2025
Looking at a period when generation from renewables fell to near zero, it is evident that none could back-up the others.
The transmission infrastructure to connect areas over large geographic distances is extremely expensive. A recent project to install a feeder from
Pincher Creek, AB to Calgary AB (200 kms) cost $2.0 Billion.
Once connected, the generating Grid must have sufficient capacity to meet the demand in the remote location PLUS to meet their own demand. This would
increase their costs substantially. The receiving Grid and therefore the consumer would pay a very large premium for any imported power.
To achieve NetZero, Alberta residents will be forced to convert home heating from Natural Gas to Electricity. Due to low winter temperatures
heat pumps are not viable. Residents will see their utility bills skyrocket forcing many into a "Heat-or-Eat" dillema.
When demand is adjusted for 2050 population growth, with all home heating plus light/medium duty vehicles electric, average Grid Demand is Expected to Increase to > 30,000 Mw.
Maintaining Grid Stability will require 5,000,000 Mw of Energy Storage PLUS Wind Generation Increased to 142,480 Mw (78,166 1.8 Mw Turbines added). That is 8 Turbines
plus infrastructure constructed and commissioned each and every day between 2022 and 2050. A logistic and economic impossibility.
To effectively displace fossil fuels requires Nuclear Energy. Currently and into the foreseeable future, it is the only mature and viable option.
New and existing Nuclear facilities would require modifications to respond quickly and effectively to control voltage and frequency.
Wind and Solar are redundant as they only serve to displace Nuclear which is already a near Zero Emission technology.
For more information on the Grid Model used here http://www.goinggreencanada.ca/Alberta_Grid_Model.htm