Yeah, solar panels are nice, but in spite of the different branding, "the path Carter set us on" was still neoliberalism. Carter was the beginning of the end of the unions and the postwar consensus around Keynesianism and progressive New Deal policies.
Carter was facing an economic problem known at the time as "stagflation," where things were getting more expensive while wages remained stagnant. Keynesianism called for the government spending more when wages are low in order to stimulate the economy, and spending less only under good conditions, to balance the budget and save for a rainy day. It failed to predict stagflation because stagflation was caused by the tendency of the rate of profit to fall. But Carter chose to focus on inflation rather than stagnant wages, against the interests of unions and setting us on the path of neoliberalism.
The big difference between Carter and Reagan was that Reagan was much better at selling Americans on neoliberalism because he was willing to lie through his teeth about it. Carter's message was that neoliberalism would mean tough times and sacrifices, but that it's a chance to set aside crass materialism and focus on finding other forms of fulfillment, because what really matters is being a good person on an individual level. Reagan's message was fuck all that, think of all the cheap plastic shit you'll be able to buy, plus unions are commie shit anyway, and all that social responsibility crap is just helping black people and gays so fuck it and fuck them. But it was the same economic policy of neoliberalism under both. Americans preferred Reagan's messaging so much that he got literally 10x the electoral votes as Carter in 1980.
The reason why we're here is not because we failed to chose Carter over Reagan, but because those were the two choices we were stuck with, one neoliberal who lies and one neoliberal who tells the truth. Since neoliberalism fucking sucks, most people are going to go for the one that lies and says it'll be good, which is why Reagan beat Carter in 1980 with 10x the electoral votes. But the solution is not to somehow convince people to vote for the more honest neoliberal, it's to provide an alternative to neoliberalism altogether.