Cleantech Blog had a conversation last year with Stuart Hemphill, now the newly appointed Vice President for Renewables and Alternative Energy at Southern California Edison, a subsidiary of Edison International (EIX), one of the largest purchasers of renewable power in the US. We caught up with him again in a lively discussion around his predictions for the renewable sector.
On Thursday EIX announced its sixth competitive solicitation for renewable energy. On peak delivery from the Tehachapi region is preferred, as it is currently building a massive transmission line to tap into the 4,500 MW of wind potential. But wind produces only 35% of the time. This major pipeline needs to be balanced. As such, it is looking for creative proposals from developers to fill up the rest of that transmission line with on peak power deliveries.
Renewable and alternative energy are still top goals for Edison. Stuart says his promotion is part a reflection of the business’ expanding interest in leadership in renewables in the US.
Prediction Number 1 - The next 10 years are going to be a wild, wild west in the solar industry. Companies around the globe are exploring new solar technologies of every variety. Stuart thinks it’s way too early to tell which ones are going to be successful. But he considers solar to be the great untapped resource in California and elsewhere.
I asked him if by that he meant solar thermal or photovoltaics. The answer is “Yes”. Stuart responded that in the past couple of years we have seen incredible amounts of venture capital investment going into solar firms, and PV is only part of that equation.
When I pushed Stuart to predict a winner between conventional solar parabolic trough and other types of solar thermal technologies, Stuart refused, suggesting that it is still too early to tell which technologies will be the winners. That’s what makes it exciting to watch, in his opinion. As an example, he stated that we are now seeing renewed interest power tower technologies with pretty high efficiencies. The challenge is to see which ones get done.
When it comes to what’s important to SoCal Edison itself, it is really important that they sign PPA contracts with viable companies and viable technologies. He sees a wide spectrum of proposals in terms of viability, and is always looking for at least some sort of demonstration plant to prove it up and a significant level of backing for the companies before they can get involved.
Prediction Number 2 - I did ask him what his take on run of river hydro is. He responded that he hopes to be wrong, as he likes run of river hydro, but doesn’t see any major increases in the resource coming in California. Hydro in California in general has a very a limited resource potential left to be developed and lots of stakeholder concerns to be addressed in each case, so while he is hopeful, he is not predicting any great increases.
Prediction Number 3 - US Offshore Wind – We will not see much from offshore wind in California, as there are limitations both from physical layout of the shoreline as well as from policy and consumer concerns.We then talked about what the industry challenges are. Stuart nailed two big ones, transmission and interconnection.
He believes that transmission is becoming even more challenging than it was the last time we spoke. What’s interesting to Stuart is that most people agree and are in support of renewables in California, but very few people support the way that the goals need to be attained, i.e., to significantly increase transmission infrastructure.
There tends to be lots of local opposition or federal agencies that aren’t always in support of particular local goals. This makes sense, as transmission by its nature always touches a lot of different land and communities in its path, meaning lots of different stakeholders need to be involved.
Interconnection queue bottlenecks are the real next challenge in California and in the Midwest according to Stuart. This is a challenge that is addressable and there are proposals into FERC to do so. But currently it is a first come first served system, and it is easy to get into the queue. Getting into the queue starts a study process based on FERC rules, including a feasibility study, then a system impact study and a facility study.
The bottleneck arises because according to the current rules: If your facility is further back in the queue, your studies assume that the facilities ahead of you are up and running, but if at any point in time someone ahead of you drops out, your studies need to be effectively redone. Because it is relatively easy to get into the queue, nonviable projects that do not end up coming online as planned have been upsetting the applecart, causing all the projects behind them to go back to the drawing board as far as the study process is concerned.
Since 2002, we’ve seen a steep ramp up to a level that is just unmanageable given that dynamic. CAL ISO has a proposal in with FERC to change this, so Stuart believes a solution is coming, just not here yet. As usual, SoCal Edison is pushing forward aggressively on renewables, and we were excited to see the new solicitation and changes it is making. As we have said before, let’s just get it done.