Solar


AB 510 (full text here) passed both the Senate and Assembly, and Governor Schwarzenegger says he will sign the bill into law.  The bill raises the cap set on the number of homes and businesses that can take advantage of net energy metering.  Yes, there’s a cap!  The utilities don’t want “customer-generators” producing power without limit, and the government appears concerned the customers will somehow tip the “balance of power” between customer-generators and utilities (yes, that’s an energy pun).

At its core, the bill states utilities are not required to issue permits and enter agreements with “customer-generators” (residential and commercial solar and wind power producers) beyond 5% of the utilities’ aggregate customer peak power demand.  The previous cap was 2.5%.

The legislation also addresses co-energy metering.  Co-energy metering is an arrangement between publicly owned utilities and customer-generators who produce between 10kw (50kw for wind) and 1MW.  These generators are compensated based on the time of energy use and generation.

On the other hand, standard net-metering arrangements are for customer-generators who produce 3 -10kw.  The rate at which net-metering customers are compensated is either a “time of use” model such as that with the co-energy metering producers, or a “baseline” model.

A ratemaking authority (also described in the bill) sets the rates for compensating customer-generators who have an energy surplus at the end of the year and follow the baseline model. The primary goal for the rate-making authority is to set a price that ensures non-participating customers pay the same for energy they would have otherwise paid had no net-metering been used.

To its credit, the bill allows the ratemaking authority to compensate net energy producers for the value of the electricity itself, AND the value of the renewable attributes of the electricity.  This little nod allows net energy producers to receive a bonus if the renewable attributes of the energy production add indefinite or unforeseen benefits (Cap and Trade anyone?)

Congratulations (I hope not premature) to AB 510 sponsor, Assembly Member Nancy Skinner (14th District).  The bill was proposed last year as AB 560 (click here for more of that story), but it died in committee.  We’re glad to see it is on its way to the finish line this time!

Editor’s Note: Stay tuned for Part 2 of this post that will discuss other requirements and considerations in the bill. UPDATE: Click Here For Part 2

ESolar, based out of Pasadena, CA, just announced a deal to help build a series of solar thermal power plants (AKA concentrating solar power or CSP) in China capable of generating 2 gigawatts (2,000 megawatts).  Under the arrangement, eSolar will provide Shandong Penglai Electric Power Equipment Manufacturing with the technology and information to build a $5 billion series of CSP power plants.

China has set a goal for 15% of the nation’s energy to come from renewable resources by 2020. The Associated Press reported on Saturday that due to market pressures, and recent success in generating renewable energy the Chinese government may increase that goal to 20%. Further, Chinese law requires that energy companies buy all energy available through renewable sources (such as wind, solar, and geothermal) before they can use energy from non-renewable sources such as coal.

This deal not only shows China’s interest in generating power from renewable sources, it also shows China’s interest in acquiring knowledge about alternative fuel technologies.  Though China is not allowed to export any technology acquired under the deal, all of the manufacturing for the plants will occur in China.  With that kind of expertise, it will be tough to keep Chinese industry from using the knowledge to build similar plants in China.

ESolar counts Idealab, Google, and Oak Investment Partners as some of its investors.  The New York Times also ran an interesting story about the eSolar deal and some of China’s apprehension about CSP.

AB 920 was signed into law last week.  The law requires that utilities pay for energy they receive through net metering.  We have followed AB 920 (previously AB 1920) here at the CGBB since we posted our first articles nearly a year ago.  AB 920 is the common-sense approach to net metering.  

Net metering is an arrangement whereby utilities purchase power from consumers who generate power from solar arrays or small wind turbines.   Previously, utilities would provide credits against a utility bill.  Starting in 2011, utilities will be forced to pay power-producers wholesale rates for the power (if a credit remains at the end of the calendar year).   Cash compensation to the original power producer makes sense because the utility makes money by selling that same power to end users.  

AB 920 is a great step, but California needs to travel light years before we realize the “million solar roofs” idea.  At the very least, California needs to abandon the limits on the sizes of residential power production.  Currently, to be eligible for net metering, residences must limit the size of their solar array or wind turbine.  PG&E and other utilities argue that larger arrays and turbines will result in higher electricity rates for those not participating in net metering.  This argument can not be summarily dismissed.  There are legitimate concerns about reliability from residential power producers.  However, utility concerns can be addressed in future legislation (such as infrastructure service fees or production guarantees for net meter users over a certain size).   I appreciate that ideas such as this were left out of AB 920 in order to get it passed, but by no means does this mean the work is done.

Also, the net metering program has an overall cap, and after the cap is met residential power producers are not compensated for their power produced.  AB 560, proposed by Assemblymember Nancy Skinner, representing the 14th District, would have raised the cap for net metering power available for purchase from 2.5% of peak power to 5% of peak power.  PG&E supported that bill, but it died in committee .  For an article on some of the issue with the bill, click here.

AB 920 represents a positive step for residential solar and wind power in California, but we have miles to go before we sleep.

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