For example, not many consumers of electricity really know where it comes from. Hydroelectric power generation has been highly subsidized for decades and produces half of the power from renewable sources, but wind has grown to nearly the same level in recent years. Just as was the case with hydro, the incentives to invest in wind will pay dividends for many years to come. A common problem with renewables is the resource (water, wind, or sunlight) is not always greatest near population centers where demand is highest. That has been addressed through construction of many new power transmission lines, which benefit ALL forms of generation and pave the way for new ones.
