[DuckConference]

I would assume 395MW is the nameplate capacity, so you would multiply it by a capacity factor and time to get the energy production in a specific interval. Capacity factor in hydro can vary a lot by season and how much they want to produce vs reservoir levels, but for a back of the envelope 100% capacity factor you have 395 MW × 8,760 hours/year = 3.46TWh/year . Capacity factor could be in the high 90s in good conditions and maximum production but I expect it's a lot lower unless it's a wet year with very few big maintenance jobs needed.

[throwaway2037]

    > Capacity factor could be in the high 90s in good conditions and maximum production but I expect it's a lot lower unless it's a wet year with very few big maintenance jobs needed.

Most rivers this far away from the equator don't receive the same inflows each season. For example, the spring will have very high flow due to melting snow in the mountains that feed that reservoir. I guess the winter has the lowest flow because snow melts much less in the winter.

[hunterpayne]

I seriously doubt that any non-nuclear power generation in history has ever gotten to 90% capacity factor. Based on industry averages, HH is probably about 55-65% capacity. Things that effect this are: low demand periods (caused by lots of renewables), maintenance periods and low water levels at times (in winter) behind the dam.

Also, PG&E is HIGHLY regulated. Its prices, its generation and its executive compensation are all set by the state of CA. That SF wants to complain about those numbers is pretty amazing. Remember, they still don't have enough money in the tree trimming budget so that those same lines don't start fires in other parts of the state. Its the same wire that connects HH to SF. And somehow the city is going to manage that wire better?

PS The tree trimming budget is set by the state too. Why is it so low? Renewables cost money and that's one of the budgets they raided to get the funds.